CN209409346U - A kind of composite formed manufacturing device based on microwave cavity - Google Patents
A kind of composite formed manufacturing device based on microwave cavity Download PDFInfo
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- CN209409346U CN209409346U CN201822074791.9U CN201822074791U CN209409346U CN 209409346 U CN209409346 U CN 209409346U CN 201822074791 U CN201822074791 U CN 201822074791U CN 209409346 U CN209409346 U CN 209409346U
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Abstract
The utility model provides a kind of composite formed manufacturing device based on microwave cavity, and described device includes microwave cavity, microwave generator, vibrates pneumatic hammer, material supporting plate, for compression air member and vacuumizing part；The microwave generator sends microwave into microwave cavity for for the composite material heat supply, the material supporting plate to be arranged in microwave cavity, for directly or indirectly placement composite material product to be processed on material supporting plate；The vibration pneumatic hammer is can provide the vibration pneumatic hammer of the vibration of 5000Hz or less vibration frequency and the vibration for the vibration acceleration that can provide 2g or more vertical direction to the material supporting plate and composite material；It is described for compression air member include compressed air gas source, vibration pneumatic hammer tracheae and for for vibration pneumatic hammer provide lubrication and reduce wear oil sprayer.Device described in the utility model can material prepreg solidify under atmospheric pressure to obtain the product of function admirable.
Description
Technical field
The utility model belongs to composite material curing molding field, and in particular to it is a kind of based on the composite material of microwave cavity at
Shape manufacturing device.
Background technique
Autoclave process is the most frequently used work currently used for curing molding aerospace high performance resin based composites
Skill heats material prepreg using the high temperature compressed gas generation pressure inside autoclave, is pressurizeed to complete admittedly
Chemical conversion type.Since the advanced resin-based carbon fiber enhancing composite material of aerospace is typically necessary higher temperature in solidification
The defect for reducing that material internal generates in solidification process is spent with solidifying pressure, to guarantee the matter of composite product after solidifying
Amount, therefore, solidification of hot-press tank moulding process can be very good the molding needs for meeting such high-performance composite materials product.
Autoclave system is usually by tank system, compression system, heating system, cooling system, vacuum system, control system
Deng composition.Tank system is divided into inner barrel and outer barrel, and heating, cooling system are between inner/outer tube, the tank under maximum operation (service) temperature
External skin temperatures are not greater than 60 DEG C, and heating rate is usually 1-5 DEG C/min adjustable, and cooling system uses circulating water, cooling
Rate is usually 0.5-5 DEG C/min adjustable；Hot pressing pressure inside the tank is provided with safety anti-explosive dress usually up to 1.5-2.5MPa
It sets；Vacuum system makes to form certain vacuum degree between product and mold, so that pressure inside the tank is applied on product；Control system
Equipped with temperature, pressure, the instruction of vacuum degree and recording apparatus.
Autoclave process is the heating by air in heating tank to product progress from outside to inside, although passing through heating
The mating reaction of system, compression system and blower system makes air in tank and pressure relatively uniform, but solid in heating
When change, when heat is internally transmitted by material outer, temperature distributing disproportionation can be generated in material internal, so that curing degree
Unevenly, biggish internal stress is generated in material internal, influences the forming quality of product.
Simultaneously as structure is complicated, system is huge for autoclave, belong to high pressure vessel, therefore invest required for construction
It is costly；Moreover, some disadvantages such as production efficiency is low and energy consumption is huge, and device fabrication and operating cost are high,
It limits the development of autoclave forming process or even becomes the restriction widely applied bottleneck of composite material and therefore need development one
The composite material curing technology of kind low cost and corresponding equipment.
Microwave has that selectivity heating, heating speed is fast, homogeneous heating, penetrability is strong, thermal inertia is small, energy conservation and environmental protection etc. is excellent
Point.As a kind of novel composite cure process, the heating rate of microwave curing process has obtained significantly improving,
Usually can be in 5 DEG C/min or more, therefore curing time can be substantially reduced, production cost is reduced, there is huge development potentiality.
Since the high heating rate that microwave curing process uses considerably reduces the molding time of composite product, limiting
The dipping also resulted between resin and fiber while the air discharge of prepared material inner inclusion is incomplete, so that after molding
Composite inner weakens the interfacial combined function between resin and fiber there are a large amount of hole；Simultaneously as composite wood
Material belongs to the non-conductor of heat in itself, using microwave heating composite material very likely since being unevenly distributed for microwave field is caused
Product local temperature to be formed is excessively high and then generates " hot spot ", and local temperature is too low to lead to composite material solidification not exclusively, makes
It must be remote inferior resulting with use autoclave process using the performance and quality for the composite product that this technique curing molding obtains
Product limits the extensive use of the technique in engineering.
Numerous studies are carried out for the cured equipment research and development aspect of Composite Microwave both at home and abroad, and have achieved certain
Achievement.CN201410295387 proposes a kind of temperature homogeneous distribution method of microwave-pressure-cure composite material, by composite wood
Material is placed in polygon cavity, is incident to material surface and inside after multiple reflections occur in the cavity by microwave, is made simultaneously
Gas pressure is applied to material surface after providing by pressure vessel；CN201610030557 proposes a kind of microwave heating equipment
And method, absorbing material is placed in microwave cavity, is covered by shield microwaves area and the microwave shadow shield part formed through microwave region
It covers in absorbing material outer surface, and then is preferentially heated and solidified for the part of composite product；
CN201410780220 devises a kind of molding machine, to the upper and lower of composite product in microwave heating composite material
Surface applies balanced fluid pressure, Effective Compaction composite product；CN201610025303 proposes a kind of recombination energy field
Heating device, including microwave heating equipment and autoclave, send microwave into microwave cavity by microwave heating equipment, pass through hot pressing
The high pressure compression composite product that tank provides；Patent application CN201410471231, CN201410471234,
The technology using autoclave in conjunction with microwave for the composite material that is heating and curing is also disclosed in the files such as CN201510109343.
But when being heating and curing with above-mentioned technology and device to composite material, there is no reduce solidifying pressure to compound
The influence of material, or even high-voltage field is also introduced, the energy-saving and environment-friendly advantage of microwave curing process is not played not only, simultaneously also
Because in the presence of the security risk for increasing technique while microwave-high-voltage field；In addition, the improvement for microwave curing uniformity is arranged
Applying is to achieve the effect that uniformity of temperature profile using additional suction wave or shielding material mostly, and there is no microwave is solved from principle
The non-uniform problem of field distribution.
Therefore, for save the cost and raising safety coefficient, high-pressure curing is being carried out to composite material without using autoclave
When, if the porosity of the high-performance composite materials of aerospace can be made also to be able to achieve the similar hot-press solidifying in autoclave
Effect, this is those skilled in the art's problem to be solved.Therefore, those skilled in the art need to develop and be used for accordingly
High performance resin base carbon fibre enhances the cured device and method of composite product.
Utility model content
Therefore the utility model provides a kind of composite material solidification equipment of prismatic microwave cavity containing equilateral polygon section,
Described device includes section in the prismatic microwave cavity of regular polygon, microwave generator, vibration pneumatic hammer, material supporting plate and takes out true
Empty component；The regular polygon is five sides between twelve edge, and is each provided with one on five to 12 sides of prism
The axial leaky antenna arranged and be used into microwave cavity feed microwave of the length direction along microwave cavity, the microwave generation
Device sends microwave into microwave cavity for for the composite material heat supply, material supporting plate setting to be in microwave cavity, object
For directly or indirectly placing composite material product to be processed on material torr plate；The vacuumizing part includes vacuum bag and vacuum
Pipe, the gas for will generate in composite material solidification process are extracted out in time and utilize the air pressure compacting product outside vacuum bag；Institute
Vibration pneumatic hammer is stated as that can provide the vibration of 5000Hz or less vibration frequency to the material supporting plate and composite material and can provide
The vibration pneumatic hammer of the vibration of the vibration acceleration of 2g or more vertical direction.
In a kind of specific embodiment, described device further includes the bracket for being used to support the horizontal placement of microwave cavity
(1), in microwave cavity axial direction one end and it is in for controlling microwave generator and vibrating the operation control system (2) of pneumatic hammer, be arranged
The fire door (30) of rectangle is arranged on fire door for observing the visor (4) of situation in microwave cavity, being arranged for one end compound
Material internal and the temperature-measuring optical fiber (7) of real-time detection composite inner temperature, for connecting the vacuum tube and vacuum bag
Vacuum adapter (8), be arranged in be used to support inside microwave cavity vibration pneumatic hammer support plate (11), be arranged outside composite material and
The wave transparent Die and mould plate that composite material product to be processed is used to support on material supporting plate is arranged in airfelt (13) in vacuum bag
(16), the acceleration transducer (17) of the vibration acceleration provided for real-time detection vibration pneumatic hammer.
In a kind of specific embodiment, described device further includes the electric heating being also used for as the composite material heat supply
Part, preferably described device further include magnetron (24), excitation cavity (25), microwave feed-in flange (26), high-voltage switch power supply (28)
With high-voltage switch power supply case (29).
In a kind of specific embodiment, the vibration pneumatic hammer provides the random of acceleration vertical direction for composite material
Continual vibration, the preferably described vibration pneumatic hammer are evenly distributed below material supporting plate.
In a kind of specific embodiment, the section of the microwave cavity is octagon.
In a kind of specific embodiment, the composite material is T800 carbon-fibre reinforced epoxy resin prepreg, institute
Vibration pneumatic hammer is stated to vibrate for that can provide the vibration of 2000Hz or less vibration frequency to the composite material and 3g or more can be provided
The vibration pneumatic hammer of the vibration of acceleration.
In a kind of specific embodiment, the vibration pneumatic hammer vibrates for that can provide 10Hz or more to the composite material
The vibration of frequency and can provide 50g or less vibration acceleration vibration vibration pneumatic hammer, the preferably described vibration pneumatic hammer is can be to
The composite material provides the vibration of vibration and the vibration that can provide 30g or less vibration acceleration of 20Hz or more vibration frequency
Pneumatic hammer.
In a kind of specific embodiment, the vibration pneumatic hammer is can provide in 30~1000Hz to the composite material
At least partly the vibration of vibration frequency and the vibration pneumatic hammer of at least partly vibration of vibration acceleration in 5~20g can be provided.
The utility model also provides a kind of composite formed manufacturing device of microwave cavity containing cooling-part, described device
Including microwave cavity, microwave generator, vibration pneumatic hammer, material supporting plate, cooling-part and vacuumizing part；The microwave generator
Microwave is sent into microwave cavity and is used to be the composite material heat supply, and the material supporting plate is arranged in microwave cavity, material
For directly or indirectly placing composite material product to be processed on supporting plate；The vacuumizing part includes vacuum bag and vacuum tube,
Gas for will generate in composite material solidification process is extracted out in time and utilizes the air pressure compacting product outside vacuum bag；The vibration
Take offence hammer for the material supporting plate and composite material can provide the vibration of 5000Hz or less vibration frequency and can provide 2g with
The vibration pneumatic hammer of the vibration of the vibration acceleration of upper vertical direction；The cooling-part be for for microwave generator heat dissipation and it is cold
But circulating water component.
In a kind of specific embodiment, the cooling-part includes cooling water tank, cooling water pump and radiator.
The utility model also provides a kind of composite formed manufacturing device based on microwave cavity, and described device includes microwave
Cavity, microwave generator vibrate pneumatic hammer, material supporting plate, for compression air member and vacuumizing part；The microwave generator to
Microwave is sent in microwave cavity and is used to be the composite material heat supply, and the material supporting plate is arranged in microwave cavity, material support
For directly or indirectly placing composite material product to be processed on plate；The vacuumizing part includes vacuum bag and vacuum tube, is used
It is extracted out in time in the gas that will be generated in composite material solidification process and is compacted product using the air pressure outside vacuum bag；The vibration
Pneumatic hammer is can provide the vibration of 5000Hz or less vibration frequency to the material supporting plate and composite material and can provide 2g or more
The vibration pneumatic hammer of the vibration of the vibration acceleration of vertical direction；It is described for compression air member include compressed air gas source, vibration
Pneumatic hammer tracheae and for for vibration pneumatic hammer provide lubrication and reduce abrasion oil sprayer.
In a kind of specific embodiment, the compressed air gas source is provided by air compressor (18), and the confession
Compressed air component further includes the air filter (19) of the compressed air for providing in clean air compressor.
The utility model also provides a kind of composite formed manufacturing device for uniformly receiving microwave radiation, described device packet
Include microwave cavity, microwave generator, vibration pneumatic hammer, material supporting plate, material alternating translational component and vacuumizing part；The microwave
Generator sends microwave into microwave cavity for for the composite material heat supply, material supporting plate setting to be in microwave cavity
It is interior, for directly or indirectly placing composite material product to be processed on material supporting plate；The vacuumizing part include vacuum bag and
Vacuum tube, the gas for will generate in composite material solidification process are extracted out in time and utilize the air pressure compacting system outside vacuum bag
Part；The vibration pneumatic hammer is can provide vibration and the energy of 5000Hz or less vibration frequency to the material supporting plate and composite material
The vibration pneumatic hammer of the vibration of the vibration acceleration of 2g or more vertical direction is provided；The material alternating translational component be can directly or
The composite material product to be processed component that some direction moves back and forth along microwave cavity is driven indirectly.
In a kind of specific embodiment, the microwave cavity is that section is prismatic in regular polygon, and the object
Expect that alternating translational component is directly or indirectly to drive composite material product to be processed along the axially reciprocating of microwave cavity
Component.
In a kind of specific embodiment, the material alternating translational component includes guide rail (221), can transport on guide rail
Dynamic mobile idler pulley (211), the swing mechanism for making it that composite material be driven to move back and forth for attachment material torr plate (9)
(231), for providing the stepper motor (251) and transmission shaft (241) of power for swing mechanism.
In a kind of specific embodiment, the material alternating translational component further includes transmission gear (291) and is used for
Connect the bearing and bearing block (311) and shaft coupling (321) of stepper motor (251) and transmission shaft (241).
The utility model also provides a kind of composite formed manufacturing device of microwave homogeneous radiation, and described device includes micro-
Wave cavity, microwave generator, vibration pneumatic hammer, material supporting plate, microwave mode blender and vacuumizing part；The microwave generator
Microwave is sent into microwave cavity and is used to be the composite material heat supply, and the material supporting plate is arranged in microwave cavity, material
For directly or indirectly placing composite material product to be processed on supporting plate；The vacuumizing part includes vacuum bag and vacuum tube,
Gas for will generate in composite material solidification process is extracted out in time and utilizes the air pressure compacting product outside vacuum bag；The vibration
Take offence hammer for the material supporting plate and composite material can provide the vibration of 5000Hz or less vibration frequency and can provide 2g with
The vibration pneumatic hammer of the vibration of the vibration acceleration of upper vertical direction；The microwave mode blender includes to rotate for band movable vane piece
Stirring motor, and the blade be metal blade for microwave reflection and make the intracorporal microwave radiation of microwave cavity uniform.
In a kind of specific embodiment, the microwave mode blender also includes to be connected to stirring motor and metal leaf
Shaft coupling (232) and drive sprocket (242) between piece, and the metal blade by bearing and bearing block (262) directly or
It is indirectly fixed on microwave cavity.
In a kind of specific embodiment, metal blade is agitated pan blade (252) or spiral mixing blades
(272)。
In a kind of specific embodiment, the microwave cavity is section in the prismatic and described micro- of regular polygon
The number of wave mode blender be it is equal with the number of edges of the regular polygon, pass through biography between multiple microwave mode blenders
Dynamic chain (282) connection.
The utility model also provides a kind of composite formed manufacturing device, and described device includes microwave cavity, microwave hair
Raw device, vibration pneumatic hammer, material supporting plate, material alternating translational component, microwave mode blender and vacuumizing part；The microwave hair
Raw device sends microwave into microwave cavity for for the composite material heat supply, the material supporting plate setting in microwave cavity,
For directly or indirectly placing composite material product to be processed on material supporting plate；The vacuumizing part includes vacuum bag and vacuum
Pipe, the gas for will generate in composite material solidification process are extracted out in time and utilize the air pressure compacting product outside vacuum bag；Institute
Vibration pneumatic hammer is stated as that can provide the vibration of 5000Hz or less vibration frequency to the material supporting plate and composite material and can provide
The vibration pneumatic hammer of the vibration of the vibration acceleration of 2g or more vertical direction；The material alternating translational component is can be directly or indirectly
Drive the composite material product to be processed component that some direction moves back and forth along microwave cavity；The microwave mode stirring
Device includes the stirring motor for rotating with movable vane piece, and the blade is that metal blade is used for microwave reflection and makes microwave cavity
Intracorporal microwave radiation is uniform.
In a kind of specific embodiment, the microwave cavity is that section is prismatic in regular polygon, and the object
Expect that alternating translational component is directly or indirectly to drive composite material product to be processed along the axially reciprocating of microwave cavity
Component.
In a kind of specific embodiment, the material alternating translational component includes guide rail (221), can transport on guide rail
Dynamic mobile idler pulley (211), the swing mechanism for making it that composite material be driven to move back and forth for attachment material torr plate (9)
(231), for providing the stepper motor (251) and transmission shaft (241) of power for swing mechanism.
In a kind of specific embodiment, the material alternating translational component further includes transmission gear (291) and is used for
Connect the bearing and bearing block (311) and shaft coupling (321) of stepper motor (251) and transmission shaft (241).
In a kind of specific embodiment, the microwave mode blender also includes to be connected to stirring motor and metal leaf
Shaft coupling (232) and drive sprocket (242) between piece, and the metal blade by bearing and bearing block (262) directly or
It is indirectly fixed on microwave cavity.
In a kind of specific embodiment, metal blade is agitated pan blade (252) or spiral mixing blades
(272)。
In a kind of specific embodiment, the microwave cavity is section in the prismatic and described micro- of regular polygon
The number of wave mode blender be it is equal with the number of edges of the regular polygon, pass through biography between multiple microwave mode blenders
Dynamic chain (282) connection.
The utility model also provides a kind of composite material solidification equipment comprising pressure-resistant microwave cavity, and described device includes can be close
Close microwave cavity, microwave generator, vibration pneumatic hammer, material supporting plate, microwave cavity pressurized part and the vacuumizing part of setting；Institute
It states microwave generator and sends microwave into microwave cavity for for the composite material heat supply, material supporting plate setting to be in microwave
In cavity, for directly or indirectly placing composite material product to be processed on material supporting plate；The vacuumizing part includes vacuum
Bag and vacuum tube, the gas for will generate in composite material solidification process are extracted out in time and are compacted using the air pressure outside vacuum bag
Product；It is described vibration pneumatic hammer for can be provided to the material supporting plate and composite material 5000Hz or less vibration frequency vibration and
The vibration pneumatic hammer of the vibration of the vibration acceleration of 2g or more vertical direction can be provided；The microwave cavity pressurized part includes at least
One connect with microwave cavity and is used to input into microwave cavity the microwave cavity booster compression tracheae of compressed air.
In a kind of specific embodiment, described device further include air compressor (18), air filter (19) and
Oil sprayer (20), and vibrate pneumatic hammer tracheae (61) and microwave cavity booster compression tracheae (62) with the air compressor (18)
Connection, the oil sprayer are used to provide lubrication for vibration pneumatic hammer and reduce abrasion, and the air filter is used for clean air pressure
The compressed air provided in contracting machine.
The utility model also provides a kind of composite material solidification equipment comprising microwave heating, and described device includes that section is in
Prismatic microwave cavity, microwave generator, vibration pneumatic hammer, material supporting plate, central rotating shaft and the vacuumizing part of regular polygon；
The microwave generator sends microwave into microwave cavity for for the composite material heat supply, material supporting plate setting to be micro-
In wave cavity, for directly or indirectly placing composite material product to be processed on material supporting plate；The vacuumizing part includes true
Empty bag and vacuum tube, the gas for will generate in composite material solidification process are extracted out in time and utilize the air pressure pressure outside vacuum bag
Real product；The vibration pneumatic hammer for can be provided to the material supporting plate and composite material the vibration of 5000Hz or less vibration frequency with
And the vibration pneumatic hammer of the vibration of the vibration acceleration of 2g or more vertical direction can be provided；The center rotating shaft is arranged in microwave cavity
Intracorporal axial centre position is arranged on for the revolving solid composite material product that section is center symmetric figure.
In a kind of specific embodiment, the section is that the revolving solid composite material product of center symmetric figure is to cut
Face is in one of prismatic product, spheroid product, cylindrical body product of regular polygon.
In a kind of specific embodiment, described device further includes that the revolving solid composite material product is set in institute
State the piece uploading lower part auxiliary mould on central rotating shaft.
In a kind of specific embodiment, described device further include by the revolving solid composite material product directly or
Connect the vibration processing auxiliary mould fixed with the material supporting plate.
Using device and method provided by the utility model, can at least bring it is following the utility model has the advantages that
1) the utility model provides a kind of the compound of the multi- scenarios methods such as the vibration acceleration field of microwave energy field and vertical direction
Can field so that be heating and curing composite material when its internal temperature field and curing degree it is uniform.
2) what device provided by the utility model made composite material is heating and curing that be truly realized uniform throughout consistent.This
The inside and outside solidification that the internal temperature that utility model is able to achieve composite product is uniformly distributed with product is synchronous, to greatly reduce
The probability of the various defects such as layering, deformation, cracking, residual stress occurs for product after solidification, make product because of internal temperature not
Scrappage is greatly reduced caused by uniformly, improves the quality of production and productivity effect of product.
3) in a kind of specific embodiment, the utility model combination computer autocontrol technique is practical new using this
The device that type provides can solidify the recombination energy field that composite material carries out automatically controlling.
Generally speaking, solidification equipment described in the utility model and curing method can make material prepreg in atmosphere
Pressure, which solidifies, obtains the product of function admirable.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic front view of the first embodiment in the utility model.
Fig. 2 is the top view of Fig. 1 described device structure.
Fig. 3 is the apparatus structure schematic front view of second of embodiment in the utility model.
Fig. 4 is the top view of the part-structure of Fig. 3 described device structure.
Fig. 5 is the apparatus structure schematic front view of the third embodiment in the utility model.
Fig. 6 is the top view of the part-structure of Fig. 5 described device structure, wherein using agitated pan blade 252.
Fig. 7 is the mode stirrer connection schematic diagram of Fig. 5 described device structure.
Fig. 8 is the apparatus structure schematic front view of the 4th kind of embodiment in the utility model.
Fig. 9 is the apparatus structure schematic front view of the 5th kind of embodiment in the utility model.
Figure 10 is the apparatus structure schematic front view of the 6th kind of embodiment in the utility model.
Figure 11 is another top view of the part-structure of Fig. 5 described device structure, wherein using spiral mixing blades
272。
In Fig. 1~11:
1- rack 2- operation control system 3- microwave cavity 4- visor 5- microwave generator 6- vacuum tube 7- temperature-measuring optical fiber 8-
Vacuum adapter 9- material supporting plate 10- vibrates pneumatic hammer 11- support plate 12- vacuum bag 13- airfelt 14- product 15- pressing plate to be processed
16- wave transparent Die and mould plate 17- acceleration transducer 18- air compressor 19- air filter 20- oil sprayer, 21- cooling water tank
22- cooling water pump 23- radiator 24- magnetron 25- excitation cavity 26- microwave feed-in flange 27- leaky antenna 28- high-voltage switch gear
Power supply 29- high-voltage switch power supply case 30- fire door,
211- mobile idler pulley 221- guide rail 231- swing mechanism, 3- microwave heating chamber 221- guide rail 9- material supporting plate 291- are passed
Moving gear 241- transmission shaft 311- bearing and bearing block 321- shaft coupling 251- stepper motor,
212- microwave mode blender, 222- stirring motor 232- shaft coupling 242- drive sprocket 252- agitated pan leaf
Piece 262- bearing and bearing block 272- spiral mixing blades, 282- driving chain,
61- vibrates pneumatic hammer tracheae, 62- microwave cavity booster compression tracheae, the center 63- rotating shaft.
Specific embodiment
The embodiments of the present invention are described in detail below, but the utility model can be limited according to claim
Fixed and covering multitude of different ways is implemented.
As known to those skilled in the art: the vibration component of the pneumatic hammer containing vibration is also known as vibration exciter or vibration machine.
It is a kind of device that mechanical oscillation are obtained using electronic, electro-hydraulic pressure, piezoelectricity or other principles.It is realized with lesser table top higher
Acceleration and higher working frequency.Vibration test is broadly divided into sinusoidal vibration and random vibration.The vibration of the pneumatic hammer containing vibration
Component is suitable for the experiment of the industries such as auto parts and components, electronic component, component, medicine, food, furniture, gift, ceramics, packaging
Coupled vibration test is carried out to sample on room and production line.It is tested as environment receives, quality identification test, reliability determination examination
It tests, endurance test, vibration simulation analysis, material property test, fatigue test, vibration prevents improvement etc..Analog equipment manufacture,
The vibration environment being subjected in assembling, transport and use process, to evaluate resistance to vibration, reliability and the integrity of its structure.
That is, the purposes of the vibration component of the pneumatic hammer containing vibration is limited to the longevity of artificial post test product more at present
Life.
And the random vibration of the vertical direction generated in the utility model using the vibration component of the pneumatic hammer containing vibration, it is used
In the solidification process of resin-based carbon fiber composite, so that material prepreg is solidified into qualified composite material system
Part.The principle of solidification in the utility model has references to concrete vibrating principle.Specifically, having been mixed and stirred with concrete agitator mixed
When solidifying soil pours component, wherein bubble must be excluded, is made firm by ramming, combines concrete compaction, eliminate the voids and pits of concrete
Phenomena such as, to improve its intensity, guarantee the quality of concrete component.The above-mentioned process that bubble is eliminated to concrete, is made firm by ramming
As concrete vibrating.The vibration frequency of low frequency formula is 25~50HZ；Intermediate frequency formula is 83~133HZ；High frequency type be 167HZ with
On.
For the utility model unlike concrete vibrating, the vibration frequency of the utility model first is not limited to concrete vibration
The frequency smash, secondly, concrete vibrating belongs to cold curing, and the utility model belongs to curing process；In addition, the utility model
In be vibration vertically downward using 2g or more vibration acceleration, and vibration acceleration direction is usually nothing in concrete vibrating
Sequence.
Referring to the concrete secondary vibration that 1~4h or so is carried out before initial set, the utility model is subsequent mutually to take an entrance examination
Secondary vibration is tested to the effect of composite material heat cure.
Present mature technology, such as commercially available acquisition can be used in the vibration component of the pneumatic hammer containing vibration in the utility model
" accelerating lifetime testing instrument ", which is exclusively used in the test that accelerates the failure of life of product, and
It is used for the vibration component of such pneumatic hammer containing vibration to replace the high pressure in autoclave in the utility model and makes carbon fiber tree
The solidification effect of resin composite material is more excellent.
In addition, the direction of gravity acceleration g is always straight down, vibration pneumatic hammer described in the utility model can provide 2g
Above vibration acceleration, i.e., it is 2g or more, g=9.8m/s that the vibration acceleration that pneumatic hammer provides is vibrated in solidification process2, preferably
Vibration acceleration is 2~50g, more preferable 5~30g when solidification.Namely the vibration that pneumatic hammer provides is vibrated in the utility model and is accelerated
Spending direction is equally vertical direction.
This seminar is on the basis of extensive investigation a variety of Composite Microwave solidifying and molding devices both at home and abroad, for compound
Need to introduce the non-uniform problem of pressure, microwave field distribution in material microwave solidification process, microwave curing apparatus and vibration is flat
Platform cleverly combines, and proposes and is suitable for vibration pretreatment+low pressure microwave curing carbon fiber reinforced resin based composites technique
Vibration microwave combined shaping manufacture system.
The briquetting pressure that the utility model is faced for carbon fiber enhancement resin base composite material microwave curing process is high, micro-
The problem of wave field is unevenly distributed, the relevant knowledge of waveguide theory and mechanical oscillation based on microwave technology, devises a kind of energy
Vibration microwave combined shaping manufacture system that is enough while realizing vibration processing and microwave curing composite material, it is compound significantly reducing
The quality of product after shaping is well ensured while material forming pressure, shortening curring time, to meet composite material structure
Part energy conservation and environmental protection, the engineering of high-quality and high-efficiency figuration manufacture need.
Vibration microwave combined shaping manufacture system mainly includes microwave heating system, vibrational system, control system, auxiliary system
System etc..Microwave heating system is by microwave heating cavity, microwave generator, leaky antenna, microwave heating uniformity regulating system etc.
Related matching component composition, major function be microwave is efficient, be equably fed into inside cavity, obtain internal product
Even heating.Microwave cavity uses regular polygon structure (by taking octagon as an example), the microwave that mountable 8 single power are 1kW
Generator, microwave generator is by magnetron, excitation is strong, microwave feed-in flange forms, and the power of single microwave generator can be
It is independent between 100W-1000W, continuously adjustable, general power 8kW；Multiclass line channel and preformed hole are disposed on cavity: including
Temperature measuring equipment channel, vibration exciter line channel, stress-strain test channel, vacuum tube passage, central rotating shaft preformed hole
Deng can also be achieved the real-time monitoring and control of each state parameter of inside cavity while guaranteeing that entire manufacture system works normally
System；Inside cavity is equipped with eight sets of leaky antennas, uses the mode of leaky antenna feed-in by frequency for 2.45GHz ± 25MHz's
Microwave is introduced into the cavity of microwave heating equipment；Totally eight sets of matched microwave power supply, output power is in 0.1-1.0kW range
It is interior continuously adjustable；Microwave heating uniformity regulating system includes material swing mechanism and mode stirrer, and material swing mechanism is adopted
With stepper motor driving gear and rack teeth mechanism material supporting plate is swung, hunting range 50-200mm, amplitude is continuously adjustable,
Swing speed is 400mm/min, and stainless steel guide rail both ends are welded and fixed with microwave cavity body end frame, the carrying of material supporting plate maximum
Power is 250kg, and lower section is connected with vibration pneumatic hammer, is placed on moving guide rail, using can bear the saturating of random vibration for a long time
Wave material production；The stirring blade of mode stirrer is rotated using the axial direction of microwave cavity as rotary shaft, and revolving speed is in 1-10r/
Liaison is adjustable within the scope of min, and stirring blade uses flat and spiral both of which, and material is stainless steel, and eight sets of modes are stirred
It mixes and is attached by way of sprocket wheel chain between device, driven using a stirring motor.
The overall structure of vibrational system includes vibrating pneumatic hammer, support plate, the gas source for providing compressed air etc..Two pieces of support plates
For fixing pneumatic hammer, material is Q235 structural steel, and board ends are consolidated equally by the way of welding with the end frame of microwave cavity
It is fixed；Vibration pneumatic hammer one end is connect with fixed support plate, and the other end is attached with material supporting plate.When vibrational system works, two
Column totally eight (along cavity axial direction each column four) vibration pneumatic hammer rises overally first, makes leading for material supporting plate and material swing mechanism
Rail is detached from, and then eight vibration pneumatic hammers start to work independently, and material supporting plate is made to be in random vibration state；Compression is provided for pneumatic hammer
The gas source of air use screw air compressor, using twin-screw engage contraction principle, have run smoothly, gas source cleaning,
The advantages that pressure oscillation is small.The peak acceleration that vibrational system can provide is 50g, and acceleration stability is ± 1g (one minute
It is interior), vibration frequency 10-5000Hz.The acceleration transducer that vibrational system is located on material supporting plate equipped with one simultaneously is used
In the real time monitoring of material supporting plate vibration acceleration.
Control system mainly includes the control of the control and vibrational system to microwave heating system.Microwave heating system
Temperature measurement module can be acquired simultaneously by 9 temperature-measuring optical fibers equipped with 9 thermometric channels and be placed on the most of product in microwave cavity
The information of acquisition is transmitted to data collecting instrument by the temperature of 9 different locations, and data collecting instrument after Data Analysis Services to transmitting
To microwave heating control system, control system issues signal to microwave power control module, and then adjusts microwave generator and generate
Microwave power.Microwave heating control system can be directed to collected multiple data, to eight microwaves being located on heating cavity
The feed-in power of generator is individually regulated and controled, by advance in control system input temp curve, it can be achieved that microwave heating
Automatic heating of the system to inside cavity product.
Vibration control system can control material supporting plate by adjusting the inlet and outlet amount in the vibration pneumatic hammer unit time with not
Same acceleration carries out random vibration, and supporting plate can be made to carry out the displacement operations such as up and down.By being placed on material supporting plate
Acceleration transducer acquisition data and transfer data to control module, when by control module to the vibration of shaking platform
Between, vibration acceleration is configured, and completes the acquisition of various real-time controls and major parameter.Microwave control system and vibration control
System processed can cooperate, and by inputting the moulding process curve of overall process, realize vibration microwave recombination energy composite material off field
The automation figuration manufacture of component.
Auxiliary system mainly includes recirculating cooling water system, vacuum system, air filter and oil sprayer etc..Recirculated water cooling
System includes water pump, matched water tank and radiator, and for the heat dissipation and cooling of microwave generator, the flow of water pump is 2 vertical
Side/hour, the heat exchange amount of radiator are 5kW；Vacuum system for making product and mold product form vacuum, by vacuum bag outside
Atmospheric pressure reach compacting product, improve the effect of parts quality.Vacuum system includes vacuum nozzle, quick coupling, vacuum tube
Etc. structures, in order to avoid metal product in microwave field to microwave field uniformity generate negative effect, the utility model vacuum
The equipment that system includes is all made of polytetrafluoroethylene (PTFE) preparation；Air filter is Cylinder shape constructional element, inside there is filter core, guarantees to enter vibration
The compressed air of system be it is clean, reduce the abrasion of pneumatic hammer；Oil sprayer is used to vibrate the lubrication of pneumatic hammer, makes pneumatic hammer vibrated
Abrasion is reduced in journey, increases service life.
Concrete operations:
Material prepreg (by taking T800/X850 as an example) is placed on the wave transparent mold that can bear vibration for a long time,
It has been buried temperature-measuring optical fiber (more can be buried in different location) inside prepreg, has then been sequentially placed airfelt, vacuum nozzle, vacuum
It after bag, is sealed using sealant, mold and material supporting plate is fixed and (can be used and be bolted) using pressing plate, will be surveyed
The temperature measurement module and vacuum system of warm optical fiber and vacuum nozzle and equipment are attached, and close fire door.
Pass through external controller molding process curve, including vibration acceleration, time of vibration, microwave heating speed
The parameters such as rate, holding temperature, soaking time, microwave heating rate are changed based on the temperature collected in real time by microwave control system
Microwave generator feed-in Power auto-adjustment is realized.
Open vacuum system, microwave uniformity regulating system, the auxiliary system etc. of equipment, running equipment, by fire door
Visor and the devices such as temperature, acceleration transducer can be to inside cavity the case where carry out real-time monitoring, realize composite material structure
Part carries out cured figuration manufacture process using microwave after vibration pretreatment.
The utility model carries out vibration microwave not only for the composite product of plate and labyrinth type face and is combined into
Shape is made, and can also realize the molding manufacture of rotary structure part by installing central rotating shaft and matching tooling additional.
In a kind of specific embodiment of the utility model, the hammer core for vibrating pneumatic hammer can constantly be stretched out out of cylinder body, mist of oil
Device plays lubricating action to the friction between hammer core and cylinder body.
In a kind of specific embodiment of the utility model, the microwave cavity closed can be arranged and be resistant to certain pressure
Power, such as the gauge pressure of 0~0.1MPa of tolerance, make microwave cavity intracorporal and inputting compressed air into the microwave cavity
Pressure gauge pressure is 0~0.1MPa.In the utility model, because the gas generated in composite product solidification process is all through taking out very
Empty component is taken away, thus do not have to worry product can be vented into microwave cavity, and be provided with microwave cavity booster compression tracheae and
The closed microwave cavity of energy makes the device can be used for the same device realization microwave, vibration and experiment with pressure.This field skill
What art personnel can understand, the experiment with pressure is to form certain gauge pressure in microwave cavity and provide to composite product certain
External pressure.Microwave cavity is introduced compressed air by air compressor 18, so that low pressure gauge pressure is formed in microwave cavity,
On the basis of vibration processing and microwave curing process, the performance of composite product can further improve.
Vibration pneumatic hammer and microwave generator has been used in combination in device described in the utility model, makes it possible to for following four
In the curing method of kind composite material:
The first, resin-based carbon fiber composite prepreg is pre-processed using vibration, while is aided with electric heating, used later
Material prepreg described in microwave curing.
The second, it combines electrothermal piece to carry out the heat cure of composite material using vibration pretreatment, does not use microwave heating.
Third, whole process are heated using microwave or using the combination of microwave and electrothermal piece, and vibration processing is not used.
4th, whole to use vibration processing composite material, it is heating and curing simultaneously, can be microwave heating and/or electric heating.
Embodiment 1
Solidify T800 composite material using device described in the utility model,
First electric heating and vibration pneumatic hammer do vibration processing to composite material, and temperature is warming up to 80 by room temperature with 1.5 DEG C/min
DEG C, 30min is kept the temperature later, and vibration frequency is the random vibration of 10-2000Hz, vibration acceleration 10g, g=9.8m/s2, vibration
To composite material vacuumize process in dynamic treatment process, composite material local environment pressure is atmospheric pressure.
After the vibration processing that the composite material keeps the temperature 30min at 80 DEG C, stops vibration, be directly warming up to 180 DEG C by 80 DEG C
Heat cure is carried out, electric heating and the compound thermal field of microwave heating do elevated cure processing, the compound thermal of composite material to composite material
Field heating rate is 3~5 DEG C/min, this stage continues vacuumize process to composite material, and applies table to composite product
Pressure is 0.1MPa external pressure.150min is kept the temperature after being warming up to 180 DEG C, obtains composite product after furnace cooling.
The porosity of gained composite product is 0.31~0.39%, the interlaminar shear strength of gained composite product
For 98.56~101.23Mpa.
In utility model device, such as the vibration environment of the vibration pneumatic hammer are as follows: Triaxiality and six degrees of freedom super-Gaussian is random
Vibration, peak acceleration are 50g or 75g, and vibration frequency is 10~5000Hz, and the temperature range of work is -100 DEG C
~+200 DEG C.For shaking platform using external air compressor as power source, sustainable utilization, which vibrates pneumatic hammer and provides, stablizes vibration source, vibrated
Vibration is transferred to composite material from vibration pneumatic hammer in the vertical direction in journey.
Embodiment 2
Using device described in the utility model solidify T800 composite material, vibration acceleration 15g, other conditions with reality
It is identical to apply example 1.
The porosity of gained composite product is 0.35%-0.42%, and the interlayer shear of gained composite product is strong
Degree is 97.65-99.54MPa.
Embodiment 3
Solidifying T800 composite material using device described in the utility model, holding stage is to be kept the temperature under atmospheric pressure,
Other conditions are same as Example 1.
The porosity of gained composite product is 0.35%-0.45%, and the interlayer shear of gained composite product is strong
Degree is 93.92-97.18MPa.
Comparative example 1
This comparative example is that autoclave is used alone to carry out high temperature and pressure integrally curing to T800 composite material, and solidifying pressure is
0.6MPa, electric heating makes composite temperature be warming up to 180 DEG C by room temperature with 1.5 DEG C/min in autoclave, and is warming up to
150min is kept the temperature after 180 DEG C, and composite product is obtained after furnace cooling, composite material take out in entire solidification process true
Vacancy reason.
The porosity of gained composite product is 0.36%, and the interlaminar shear strength of gained composite product is
98.15Mpa。
Comparative example 2
This comparative example is that microwave is used alone to carry out high temperature integrally curing to T800 composite material, under vacuum-pumping conditions,
And external pressure is under gauge pressure 0.1Mpa.Microwave heating is warming up to composite temperature with 3~5 DEG C/min by room temperature
180 DEG C, and 150min is kept the temperature after being warming up to 180 DEG C, composite product is obtained after furnace cooling, to multiple in entire solidification process
Condensation material carries out vacuumize process.
The porosity of gained composite product is 1.25%-1.45%, and the interlayer shear of gained composite product is strong
Degree is 76.97-79.62MPa.
By the comparison result of the utility model embodiment 1~3 and comparative example 1 and 2 it is found that device described in the utility model
The performance of the composite product obtained after solidification can compare favourably completely with this standard cure process of solidification of hot-press tank.
In conclusion the utility model at least has the following characteristics that
1, the utility model vacuumize and not impressed pressure or only apply 0~0.1MPa gauge pressure in the case where be prepared
The composite product haveing excellent performance reduces composite material curing molding pressure, and curing rate has obtained significantly
Accelerate, saved equipment cost and solidification cost, realizes composite product safety, uniformly, efficiently, energy savingly forms admittedly
Change.
2, after the utility model is by optimization impressed pressure, vibration frequency and vibration acceleration, so that composite material system
The performance of part matches in excellence or beauty the composite product made from this standardization program of solidification of hot-press tank.Analyze reason, it may be possible to which this is practical
Under the action of novel middle vertical direction vibration acceleration, for composite material everywhere by uniform vibration acceleration, it is same
It can be with the prepreg overlay of Effective Compaction composite material, to improve the quality of product, and the porosity for solidifying gained product is low
And even pore distribution.
3, in the utility model by heating device and vibration device integrated setting so that composite product in vibration and
It can continue to heat up or keep the temperature without cooling after heat treatment to carry out heat cure, solidify the product of resulting composite product
It can be more preferable, more efficient.
Resistance to mesohigh is needed for solidifying the autoclave of T800 prepreg in the prior art, tank skin is thick and solid.In the utility model
Microwave cavity need to only be resistant to normal pressure or be resistant to gauge pressure be 0~0.1MPa low pressure, installation cost significantly reduce.
The above content is the further descriptions made in conjunction with specific preferred embodiment to the utility model, cannot recognize
The specific implementation for determining the utility model is only limited to these instructions.For the ordinary skill people of the utility model technical field
For member, without departing from the concept of the premise utility, several simple deductions and replacement can also be made, all should be considered as
Belong to the protection scope of the utility model.
Claims (10)
1. a kind of composite formed manufacturing device based on microwave cavity, which is characterized in that described device includes microwave cavity
(3), microwave generator (5), vibration pneumatic hammer (10), material supporting plate (9), for compression air member and vacuumizing part；It is described micro-
Wave producer sends microwave into microwave cavity for for the composite material heat supply, material supporting plate setting to be in microwave cavity
It is interior, for directly or indirectly placing composite material product to be processed (14) on material supporting plate；The vacuumizing part includes vacuum
Bag (12) and vacuum tube (6), the gas for will generate in composite material solidification process are extracted out in time and using outside vacuum bags
Air pressure is compacted product；The vibration pneumatic hammer is can provide 5000Hz or less vibration frequency to the material supporting plate and composite material
Vibration and can provide 2g or more vertical direction vibration acceleration vibration vibration pneumatic hammer；It is described for compress air member packet
Include compressed air gas source, vibration pneumatic hammer tracheae (61) and for providing lubrication for vibration pneumatic hammer and reducing the oil sprayer of abrasion
(20)。
2. device according to claim 1, which is characterized in that the compressed air gas source is provided by air compressor (18),
And it is described for compressing the air filter (19) that air member further includes the compressed air for providing in clean air compressor.
3. the apparatus according to claim 1, which is characterized in that described device further includes being used to support that microwave cavity is horizontal to be put
The bracket (1) set, the operation control system (2) for controlling microwave generator and vibration pneumatic hammer, setting are in microwave cavity axial direction
One end and in the fire door (30) of rectangle, be arranged on fire door for observing the visor (4) of situation in microwave cavity, setting for one end
Set in composite inner and the temperature-measuring optical fiber (7) of real-time detection composite inner temperature, for connect the vacuum tube and
The support plate (11) that vibration pneumatic hammer is used to support inside microwave cavity, setting is arranged in compound in the vacuum adapter (8) of vacuum bag
Material is outer and the airfelt (13) in vacuum bag, is arranged in and is used to support the saturating of composite material product to be processed on material supporting plate
The acceleration transducer (17) of wave Die and mould plate (16), the vibration acceleration provided for real-time detection vibration pneumatic hammer.
4. the apparatus according to claim 1, which is characterized in that described device further includes being also used for as composite material confession
The electrothermal piece of heat.
5. the apparatus according to claim 1, which is characterized in that it is vertical that the vibration pneumatic hammer for composite material provides acceleration
The random continual vibration in direction.
6. device described according to claim 1~any one of 5, which is characterized in that the composite material is T800 carbon fiber
Reinforced epoxy prepreg is tieed up, the vibration pneumatic hammer is can provide the vibration of 2000Hz or less vibration frequency to the composite material
The vibration pneumatic hammer of vibration dynamic and that 3g or more vibration acceleration can be provided.
7. device described according to claim 1~any one of 5, which is characterized in that the vibration pneumatic hammer is can Xiang Suoshu
Composite material provides the vibration of 10Hz or more vibration frequency and can provide the vibration gas of the vibration of 50g or less vibration acceleration
Hammer.
8. device according to any one of claims 1 to 3, which is characterized in that the vibration pneumatic hammer is can Xiang Suoshu
Composite material provides at least partly vibration of vibration frequency and capable of providing in 5~20g in 30~1000Hz and at least partly vibrates
The vibration pneumatic hammer of the vibration of acceleration.
9. device according to any one of claims 1 to 3, which is characterized in that described device further includes microwave mode
Blender, and the microwave mode blender includes the stirring motor (222) for rotating with movable vane piece, and the blade is gold
Belong to blade and makes the intracorporal microwave radiation of microwave cavity uniform for microwave reflection.
10. device according to claim 9, which is characterized in that metal blade is agitated pan blade (252) or spiral
Formula stirring blade (272).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367067A (en) * | 2018-12-11 | 2019-02-22 | 中南大学 | A kind of composite formed manufacturing device based on microwave cavity |
| WO2020119652A1 (en) * | 2018-12-11 | 2020-06-18 | 中南大学 | Composite-material forming and manufacturing apparatus based on microwave chamber |
-
2018
- 2018-12-11 CN CN201822074791.9U patent/CN209409346U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109367067A (en) * | 2018-12-11 | 2019-02-22 | 中南大学 | A kind of composite formed manufacturing device based on microwave cavity |
| WO2020119652A1 (en) * | 2018-12-11 | 2020-06-18 | 中南大学 | Composite-material forming and manufacturing apparatus based on microwave chamber |
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