CN102922621A - Production method for automobile roof made of fiber reinforced composite material - Google Patents
Production method for automobile roof made of fiber reinforced composite material Download PDFInfo
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- CN102922621A CN102922621A CN2012104846763A CN201210484676A CN102922621A CN 102922621 A CN102922621 A CN 102922621A CN 2012104846763 A CN2012104846763 A CN 2012104846763A CN 201210484676 A CN201210484676 A CN 201210484676A CN 102922621 A CN102922621 A CN 102922621A
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Abstract
The invention relates to a production method for an automobile roof made of fiber reinforced composite material. The production method particularly comprises the following steps: (1) preparing an automobile roof fiber fabricated part by adopting a first mold provided by the invention; (2) preparing the automobile roof by adopting a second mold provided by the invention; and the like. According to the invention, the continuous and automatic production of the automobile roof made of fiber reinforced composite material is realized. The method has the advantages that the production period of the automobile roof is remarkably shortened; the production efficiency of the automobile roof is greatly improved; benefits are brought for environment protection and human health; and the application prospect is very wide.
Description
Technical field
The invention belongs to auto industry and field of compound material, particularly, relate to a kind of fibre reinforced composites automobile top-cap continuous automatic production method.
Background technology
Because the greenhouse effects of global warming and the energy crisis that becomes increasingly conspicuous, energy-conservation and environmental protection becomes the most important proposition that the countries in the world auto industry faces.The automotive light weight technology technology is for new-energy automobile and traditional combustion engine automobile saving energy resource consumption, reduces one of effective technical way of environmental pollution.Fibre reinforced composites have high specific strength, high ratio modulus, antifatigue, corrosion-resistant, a series of excellent properties such as designability is strong, have become in recent years the lightweight mainstream technology trend of auto industry field.
Current, World Main Auto manufacturer all adopts fibrous composite, especially carbon fibre composite in large quantities in future automobile technology blueprint, realize the breakthrough of lightweight and Gao Bi performance matter.Ford studies show that the composite of appropriate design can reduce 80% with parts, and the relative steel of processing charges reduce by 60%, and the bonding expense is relatively welded and reduced 25% to 40%, and composite structure shows fabulous toughness and anti-collision performance.Authority studies show that, if vehicle complete vehicle weight reducing 10%, fuel efficiency can improve 6%-8%; 100 kilograms of the every minimizings of automobile kerb weight, fuel consumption per hundred kilometers can reduce by 0.3-0.6 liter.From driving performance and crashworthiness aspect, acceleration improves behind the automotive light weight technology, and braking distance reduces, and inertia reduces during collision, and vehicle control sensitivity, stability, noise and vibration aspect also all are improved.
Yet; the at present scale of fibrous composite automotive part on automobile used and is very restricted; the volume production technology that mainly is its continuous and automatic does not break through; existing technology of preparing such as hand paste, traditional RTM moulding, vacuum-assisted injection moulding method etc.; molding cycle is long, hand labor is intensive, production efficiency is low, automaticity is low, unstable product quality, can't satisfy auto industry to the demand in enormous quantities of parts.
In sum, this area in the urgent need to develop a kind of with short production cycle, production efficiency is high can be continuously, the production method of automated production fibre reinforced composites automotive part.
Summary of the invention
Technical purpose of the present invention is for above-mentioned the deficiencies in the prior art, and a kind of continuous automatic production method of with short production cycle, fibre reinforced composites automobile top-cap that production efficiency is high is provided.
In first aspect present invention, a kind of production method of fibre reinforced composites automobile top-cap is provided, it comprises step:
(1) preparation of automobile top-cap fiber preform
Behind the typing fabric, the cutting fabric; After changing the fabric after the cutting over to for the preparation of the automobile top-cap fiber preform the first mould by mechanical device, matched moulds, pressurization; Then the automobile top-cap fiber preform is taken out in die sinking, the demoulding, and is stand-by;
(2) preparation of automobile top-cap
(2.1) after the automobile top-cap fiber preform that step (1) is made changes the second mould for the preparation of automobile top-cap over to by mechanical device, matched moulds;
Described the second mould comprises: mold, bed die, gum-injecting port and gum outlet;
Wherein, described bed die is positioned at the below of described mold, and when described bed die and described mold closure, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; The resin flow channel that has a closure at described die cavity periphery;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described mold or the side of upper surface or bed die, be interconnected with described resin flow channel, and gum-injecting port and resin flow channel is positioned at simultaneously mold or is positioned at simultaneously bed die;
Described gum outlet is used for discharging resin, and it is positioned on the described mold and runs through described mold;
(2.2) inject and/or the suction resin from gum-injecting port, resin enters resin flow channel by gum-injecting port, then enters die cavity by resin flow channel, thereby finishes the perfusion of resin;
(2.3) finish the perfusion of resin after, cured resin, the automobile top-cap goods are taken out in then die sinking, the demoulding;
(2.4) the automobile top-cap goods that step (2.3) made carry out rear curing to be processed, and carries out deburring, polishing again, obtains the fibre reinforced composites automobile top-cap.
In another preference, described resin flow channel is positioned at the die cavity periphery and is positioned at the upper surface of bed die.
In another preference, described resin flow channel is positioned at the die cavity periphery and is positioned at the lower surface of mold.
In another preference, described typing fabric comprises step: spray setting agent or typing powder at fabric, thus the typing fabric.
In another preference, described cutting fabric comprises step: according to the surface size cutting fabric of described the first mould.
In another preference, described gum outlet is positioned at away from gum-injecting port and slightly departs from the position at mold center.
In another preference, in the step (1), described the first mould comprises: bed die and mold; Wherein, described bed die is positioned at the below of described mold, and described bed die and this mold common die cavity that forms when closed, and described die cavity is for the manufacture of the automobile top-cap fiber preform.
In another preference, step (1) or the described demoulding of step (2.3), realize by following stripper apparatus:
(a) with the device of one or more suckers; And/or
(b) be arranged on one or more knock-pins of bed die.
In another preference, described knock-pin is with valve cock.
In another preference, the width of described resin flow channel is that 2-30mm (preferably is 5 ± 2mm), and (preferably is 2 ± 1mm) for 0.5-5mm deeply.
In another preference, in step (1), the fabric after the cutting is changed over to before described the first mould by mechanical device, heat described the first mould; And/or in step (2.1), the automobile top-cap fiber preform that step (1) is made changes over to before described the second mould by mechanical device, heats described the second mould.
In another preference, described fabric is the fabric that fortifying fibre forms.
In another preference, described fabric is selected from one or more of lower group: plain cloth, twills, satin fabric, one-way fabric, multi-axial tricot and three dimensional fabric; And/or
Described fabric is selected from one or more of lower group: glass fabric, carbon fibre fabric, aramid fiber fabric, basalt fibre fabric, ceramic fiber fabric, natural fabric, or its combination.
In another preference, in step (2.2), described inject and/or suck resin from gum-injecting port comprise step: adopt the 0.1-0.6MPa injection pressure from the gum-injecting port resin by injection; And/or mould is vacuumized rear from gum-injecting port suction or suction resin from gum outlet.
In another preference, described resin is fast-curing resin.
In another preference, but comprising the thermoplastic resin of low viscosity thermosetting resin or in-situ polymerization, described fast-curing resin (for example is selected from lower group resin: unsaturated-resin, epoxy resin, vinyl ester resin, polyurethane resin, anionic ring-opening polymerization polyamide-based resin or poly terephthalic acid cyclobutanediol ester resin.)
In another preference, described method has one or two following feature:
(i) described step (2.2) comprises step: adopt the 0.1-0.6MPa injection pressure from gum-injecting port inject the fast-curing resin of deaeration and/or mould vacuumized after from the gum-injecting port suction or suck the fast-curing resin of deaeration, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thereby finish the perfusion of resin; And/or
(ii) described step (2.3) comprises step: after finishing the perfusion of resin, and cured resin 1-30min (being preferably 5-20min or 5-15min), the automobile top-cap goods that obtain solidifying, the automobile top-cap goods are taken out in then die sinking, the demoulding.
In second aspect present invention, a kind of mould for the preparation of automobile top-cap is provided, described mould comprises: mold, bed die, gum-injecting port and gum outlet;
Wherein, described bed die is positioned at the below of described mold, and when described bed die and described mold closure, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; Has a closed resin flow channel at described die cavity periphery;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described mold or the side of upper surface or bed die, and is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at simultaneously mold or are positioned at simultaneously bed die;
Described gum outlet is used for discharging resin, and it is positioned on the described mold and runs through described mold.
In another preference, the width of described resin flow channel is that (preferably be 5 ± 2mm), (preferably be 2 ± 1mm) for 0.5-5mm to 2-30mm deeply.
In third aspect present invention, a kind of system for the production of automobile top-cap is provided, described system comprises:
The first mould for the preparation of the automobile top-cap fiber preform;
Such as described the second mould for the preparation of automobile top-cap of second aspect present invention;
The mechanical device that is used for material for transfer; And
Stripper apparatus, described stripper apparatus comprises: (a) adopt the device with one or more suckers; And/or (b) at bed die one or more knock-pins are set.
In another preference, described material is raw material (such as fabric) or the automobile top-cap fiber preform for the preparation of automobile top-cap.
In another preference, described mechanical device is used for: will change described the first mould over to for the preparation of the raw material (such as fabric) of automobile top-cap; And/or change the automobile top-cap fiber preform over to described the second mould.
In should be understood that within the scope of the present invention, above-mentioned each technical characterictic of the present invention and can making up mutually between specifically described each technical characterictic in below (eg embodiment), thus consist of new or preferred technical scheme.As space is limited, this tired stating no longer one by one.
Description of drawings
Fig. 1 is the process structure schematic diagram of making fibre reinforced composites automobile top-cap fiber preform.
Fig. 2 is the process structure schematic diagram of making the fibre reinforced composites automobile top-cap.
Fig. 3 is the resin flow channel structural representation of making the fibre reinforced composites automobile top cover die.
Among above-mentioned each figure, 1 is that bed die, 2 is that hole sealing agent, 3 is that releasing agent, 4 is that fiber preform, 5 is that sealing joint strip, 6 is that mold, 7 is that gum-injecting port, 8 is that gum outlet, 9 is that seal groove, 10 is resin flow channel.
The specific embodiment
The inventor is through long-term and deep research, independently mould is adopted separately in the preparation of unexpected discovery automobile top-cap fiber preform and the preparation of automobile top-cap, and prepare automobile top-cap at the mould that employing has a specific resin runner, realized the continuous automatic production method of automobile top-cap, the method has significantly shortened the fabrication cycle of automobile top-cap, greatly improve its production efficiency, be fit to suitability for industrialized production.The inventor has finished the present invention on this basis.
The second mould
" the second mould " of the present invention refers to the mould for the preparation of automobile top-cap.
Now in conjunction with Fig. 2 and Fig. 3 the second mould of the present invention is described in further detail, it comprises:
Described the second mould comprises: mold, bed die, gum-injecting port, resin flow channel and gum outlet;
Wherein, described bed die is positioned at the below of described mold, and when described bed die and the salable closure of described mold, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; Has a closed resin flow channel at described die cavity periphery;
Preferably, described resin flow channel be positioned at the lower surface of the upper surface of described bed die or mold and be distributed in described die cavity around.Described resin flow channel is closed runner (as shown in Figure 3).
In addition, described resin flow channel can be the arbitrary shapes such as rectangle (as shown in Figure 3), square; The corner of described resin flow channel is the conventional set-up modes such as right angle or circular arc.Resin flow channel is communicated with part with gum-injecting port plan view shape can adopt circular shape as shown in Figure 3, should understand, this connection part also can adopt other any suitable shape (such as square or pointed shape etc.), can be communicated with as good to guarantee gum-injecting port, resin flow channel and this place's die cavity edges.
Preferably, the width of described resin flow channel be preferably 2-30mm (preferably be 5 ± 2mm), deeply for 0.5-5mm (preferably be 2 ± 1mm).
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described mold or the side of upper surface or bed die, and is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at simultaneously mold or are positioned at simultaneously bed die.
Described gum outlet is used for discharging resin, and it is positioned on the described mold and runs through described mold, and is interconnected with described die cavity; Preferably, described gum outlet is positioned at away from gum-injecting port and slightly departs from the position at mold center.
After bed die and mold closure, resin is distributed in whole resin flow channel after gum-injecting port enters mould, then progressively is full of whole die cavity, and after being full of whole die cavity, resin will flow out from gum outlet, thereby finishes whole injecting glue process.The design of resin flow channel is realizing the uniform while of injecting glue that reduced the quantity of gum-injecting port, therefore, molding cycle is shorter, efficient is higher, product quality is more stable.
In " the second mould " used herein, mold and bed die all adopt hard material (such as steel, aluminium, composite, timber etc.).
The first mould
" the first mould " of the present invention refers to the mould for the preparation of the automobile top-cap fiber preform, and be basically basic identical with the second mould of the present invention, and difference is that described the first mould is not provided with gum-injecting port, resin flow channel and gum outlet.Preferably can adopt mould as shown in Figure 1, comprise mold and bed die; Described mold and bed die can seal closures.When described mold and mold seal closure, both form a die cavity jointly, and described die cavity is for the manufacture of the automobile top-cap fiber preform.
In " the first mould " used herein, bed die can adopt hard material (such as steel, aluminium, composite, timber etc.).And mold can adopt hard material (such as steel, aluminium, composite, timber etc.), also can adopt soft material (such as silica gel, vacuum bag film etc.).
Production method
Now in conjunction with Fig. 1, Fig. 2 and Fig. 3 production method of the present invention is described in further detail, the continuous automatic production method of fibre reinforced composites automobile top-cap of the present invention mainly comprises following step:
(1) preparation of automobile top-cap fiber preform 4:
Behind the typing fabric, the cutting fabric; Fabric after the cutting is changed in the first mould of the present invention by mechanical device (such as manipulator), matched moulds, pressurization (for example is forced into 5-20MPa; Preferably to 8-15MPa) (5-60 second for example a period of time; Preferred 10-30 second), automobile top-cap fiber preform 4 is taken out in then die sinking, the demoulding, and is stand-by;
In another preference, described typing fabric comprises step: spray setting agent or typing powder at fabric.The setting agent that the present invention is used or typing powder are this area setting agent commonly used or typing powder.For example described setting agent or typing powder comprise: thermoset type (such as epoxide resin type setting agent/powder, bismaleimide resin type setting agent/powder) and thermoplastic type (such as polyisobutene setting agent/powder, vinethene setting agent/powder).
In another preference, described cutting fabric comprises step: according to the surface size cutting fabric of the first mould, so that the fabric of cutting out is suitable for making the die cavity of automobile top-cap fiber preform.
In another preference, when adopting typing powder or setting agent to finalize the design described fabric, character according to typing powder or setting agent, can be before changing the fabric after the cutting over to first mould by mechanical device, heat described the first mould (extremely the temperature with the setting agent coupling gets final product), especially when described typing powder or setting agent be finalize the design powder or middle temperature setting agent of middle temperature, such as ES-T321 etc.If certainly adopt the normal temperature setting agent, described the first mould also can not made heat treated.
Preferably, the used fabric of the present invention is the fabric that fortifying fibre forms; Preferably, described fabric is selected from one or more of lower group: plain cloth, twills, satin fabric, one-way fabric, multi-axial tricot and three dimensional fabric; And/or described fabric is glass fabric, carbon fibre fabric, aramid fiber fabric, basalt fibre fabric, ceramic fiber fabric, natural fabric, or its combination.
Preferably, described step (1) also comprises the preparation process of the first mould before: the surface of polishing, described the first mould of wiped clean, and sealing joint strip put into the seal groove of described the first mould or be placed on the periphery of described the first mould.
(2) preparation of automobile top-cap:
(2.1) the automobile top-cap fiber preform that step (1) is made changes in the second mould of the present invention by mechanical device (such as manipulator), then matched moulds.
(2.2) inject and/or suck resin from gum-injecting port, resin enters resin flow channel by gum-injecting port, and enters die cavity by resin flow channel, be covered with whole die cavity after, resin flows out from gum outlet, thereby finishes the perfusion of resin.
Preferably, described inject and/or suck resin from gum-injecting port can comprise following step: (i) adopt the 0.1-0.6MPa injection pressure from the gum-injecting port resin by injection; And/or (ii) the second mould is vacuumized after from the gum-injecting port suction or suck resin, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thereby finish the perfusion of resin.
(2.3) finish the perfusion of resin after, cured resin, the automobile top-cap goods are taken out in then die sinking, the demoulding.
Preferably, the time of resin solidification is 1-30min (being preferably 5-20min or 5-15min).
(2.4) the automobile top-cap goods that step (2.3) made carry out rear curing to be processed, and carries out deburring, polishing again, obtains the fibre reinforced composites automobile top-cap.
Resin used herein is preferably fast-curing resin, but described fast-curing resin comprises the thermoplastic resin (for example be selected from lower group resin: unsaturated-resin, epoxy resin, vinyl ester resin, polyurethane resin, anionic ring-opening polymerization polyamide-based resin or poly terephthalic acid cyclobutanediol ester resin) of low viscosity thermosetting resin or in-situ polymerization.
Preferably, described step (2.1) also comprises the preparation process of the second following mould before:
Behind the surface of polishing, wiped clean the second mould of the present invention, apply successively hole sealing agent, releasing agent on the surface of the second mould;
Then sealing joint strip is put into the seal groove of described the second mould or be placed on described the second mold periphery;
Connect the pipeline at gum-injecting port place and the gum outlet place of described the second mould;
Heat described the second mould and (for example be heated to 60-200 ℃; Preferably be 80-180 ℃).
The hole sealing agent that the inventive method is used and releasing agent are this area hole sealing agent and releasing agent commonly used.For example, described hole sealing agent comprises: the types such as glyceride resin, phenolic resins, aluminium ethene, epoxy resin, polyimides ammonia resin; Described releasing agent comprises: silicon series (mainly comprising: silicone compounds, silicone oil, silicones metlyl branching silicone oil, methyl-silicone oil, emulsification methyl-silicone oil, hydrogeneous methyl-silicone oil, silicone grease, silicones, silicon rubber, silicon rubber toluene solution etc.), wax series (mainly comprise: plant, animal, synthetic paraffin; Microcrystalline wax; Tissuemat E etc.), the types such as fluorine series (such as polytetrafluoroethylene (PTFE), fluororesin powder, fluorine resin coating etc.), surfactants (such as metallic soap, EO or PO derivative etc.).
In the production method of the present invention, demoulding step can adopt multiple stripper apparatus to assist, so that the goods of gained (being automobile top-cap fiber preform or automobile top-cap) are from the harmless demoulding of mould, described stripper apparatus can adopt (a) employing with the device of one or more suckers, with the goods sucking-off that makes, thereby make the goods demoulding; Or (b) be provided with one or more knock-pins at bed die, and described knock-pin can upwards eject, thus so that goods demoulding.At the second mould, described central term rod after the die sinking, pass into compressed air toward the push rod place of being somebody's turn to do with valve cock preferably with valve cock, thus so that the goods demoulding.
A kind of fibre reinforced composites automobile top-cap continuous automatic production method provided by the invention, its major advantage is:
The automobile top-cap that adopts automobile top-cap production method of the present invention to make had both been kept the performances such as rigidity, intensity of top cover, and compared with the metal automobile top cover and to have realized loss of weight more than 40%, and mechanical property is excellent.
Automobile top-cap production method of the present invention has realized the continuous automatic production method of automobile top-cap, and fabrication cycle significantly shortens, and production efficiency improves greatly, is fit to suitability for industrialized production.
Described the second mould of the present invention in conjunction with closed resin flow channel, has been realized single gum-injecting port and single gum outlet by a gum-injecting port, and injecting glue is even, mold filling efficient is high, mould is cleared up easily.
Below in conjunction with implementation, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Unless otherwise indicated, otherwise percentage and umber calculate by weight.Unless stated otherwise, raw materials used all commercially available the getting of the present invention.
The production method of embodiment 1 carbon fibre reinforced composite automobile top-cap
Step 1: the cleaning of the first mould and preparation
One the first mould for the preparation of the automobile top-cap fiber preform shown in Figure 1 is provided;
The surface of the bed die 1 of the first mould and mold 6 is smooth with 1000 order sand paperings, then with alcohol or acetone with surperficial wiped clean, sealing joint strip 5 is put into the seal groove of bed die 1 periphery.
Step 2: the preparation of automobile top-cap fiber preform
Beautiful T700-12K carbon fiber twill treats that cutting place sprays a small amount of setting agent (trade name: AIRTAC 2 in east, available from Airtech company), adopt again cutting according to 4 blocks of carbon cloths of surface size cutting of the first mould, 4 blocks of carbon cloths are changed in the first mould that step 1 is processed by manipulator automatic landing poststack, then matched moulds, under 9MPa the pressurization 10 seconds, after die sinking, the demoulding, take out the automobile top-cap fiber preform, stand-by;
Step 3: the cleaning of the second mould and preparation
The second mould for the preparation of automobile top-cap shown in Figure 2 is provided;
Bed die 1 and mold 6 surfaces of the second mould are smooth with 1000 order sand paperings, with alcohol or acetone wiped clean;
After the volatilization fully of alcohol or acetone, bed die 1 and mold 6 surface uniforms be coated with hole sealing agent 2 (trade name:
15Sealer is available from CHEM-TREND company); After hole sealing agent solidifies then bed die 1 and mold 6 surface uniforms apply releasing agent 3 (trade name:
Available from CHEM-TREND company), after doing, remover repeats again this operation 2 times;
Sealing joint strip 5 is put into the seal groove of bed die and mold, gum-injecting port 7 and the gum outlet 8 of the second mould connected pipeline, stand-by, then the second mold heated to 85 is spent;
Step 4: the preparation of automobile top-cap
The automobile top-cap fiber preform that step 2 is made changes the second mould of processing through step 3 over to by manipulator) in; Mold 6 and the bed die 1 of closed described the second mould; Adopt the 0.2MPa injection pressure to inject the fast-curing epoxy resin (trade name: EpoTech 167A: trade name: EpoTech 175B=100:21 of deaeration from the gum-injecting port 7 that is positioned at the bed die side, mass ratio), resin is closed gum-injecting port and gum outlet after gum outlet 8 flows out;
Step 5: the demoulding
The surface with the device absorbent articles of a plurality of suckers is used in die sinking behind the resin solidification 10min, makes goods from the harmless demoulding of mould, takes out goods;
Step 6: automobile top-cap post processing
Change the goods of step 5 gained over to baking oven, after carrying out under 150 degree, solidify and processed 1 hour, carry out again deburring, polishing, obtain the carbon fibre reinforced composite automobile top-cap.
The production method of embodiment 2 carbon fibre reinforced composite automobile top-caps
Preparation method's similar embodiment 1, different is to adopt following condition:
In the step 3, the second mold heated to 150 is spent;
In the step 4, the automobile top-cap fiber preform that step 2 is made changes in the second mould that step 3 is processed by manipulator; Mold 6 and the bed die 1 of closed described the second mould, be evacuated to from 8 pairs of moulds of gum outlet and be not higher than 2.4kPa, then suck the anionic ring-opening polymerization polyamide 6 (caprolactam: caprolactam magnesium bromide: hexa-methylene-1 of deaeration from gum-injecting port 7 by vacuum, 6-two formyl caprolactam=97:1.0:2.0, mol ratio), resin is closed gum-injecting port and gum outlet after gum outlet 8 flows out.
In the step 6, goods are solidified processing 1 hour after carrying out under 150 degree.
The production method of embodiment 3 carbon fibre reinforced composite automobile top-caps
Preparation method's similar embodiment 1, different is to adopt following condition:
Bed die 1 center at the second mould arranges a knock-pin with valve cock;
In the step 5, die sinking behind the resin solidification 10min passes into the compressed air of 0.3MPa from the knock-pin of bed die 1 center, makes goods from the harmless demoulding of mould, takes out goods.
In sum,
1. compare with the metal automobile top cover, production method of the present invention has adopted the fibre reinforced composites of lightweight, excellent performance as the making raw material of automobile top-cap, the top cover that makes is when keeping the performances such as rigidity, intensity, also realized the top cover loss of weight more than 40%, and mechanical property is excellent.
2. in the prior art, usually adopt same mould successively to prepare automobile top-cap fiber preform and automobile top-cap, such method production cycle is long, efficient is low.And production method of the present invention, when preparation automobile top-cap fiber preform and automobile top-cap, the first mould of the present invention and the second mould have been adopted respectively, realized the continuous automatic production method of automobile top-cap, significantly shortened the fabrication cycle of automobile top-cap, greatly improve its production efficiency, be fit to suitability for industrialized production.
3. existing mould for the preparation of automobile top-cap has a plurality of gum-injecting ports for resin by injection and gum outlet usually, and many gum-injecting ports and many gum outlets have inhomogeneous, the defective such as when increasing operation and mould cleaning charge of injecting glue usually.And the second mould of production method employing of the present invention in conjunction with closed resin flow channel, has been realized single gum-injecting port and single gum outlet by a gum-injecting port, and possesses the advantages such as injecting glue is even, mold filling efficient is high, the easy cleaning of mould.
All quote in this application as a reference at all documents that the present invention mentions, just as each piece document is quoted separately as a reference.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned instruction content of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (10)
1. the production method of a fibre reinforced composites automobile top-cap is characterized in that,
Comprise step:
(1) preparation of automobile top-cap fiber preform
Behind the typing fabric, the cutting fabric; After changing the fabric after the cutting over to for the preparation of the automobile top-cap fiber preform the first mould by mechanical device, matched moulds, pressurization; Then the automobile top-cap fiber preform is taken out in die sinking, the demoulding, and is stand-by;
(2) preparation of automobile top-cap
(2.1) after the automobile top-cap fiber preform that step (1) is made changes the second mould for the preparation of automobile top-cap over to by mechanical device, matched moulds;
Described the second mould comprises: mold, bed die, gum-injecting port and gum outlet;
Wherein, described bed die is positioned at the below of described mold, and when described bed die and described mold closure, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; The resin flow channel that has a closure at described die cavity periphery;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described mold or the side of upper surface or bed die, be interconnected with described resin flow channel, and gum-injecting port and resin flow channel is positioned at simultaneously mold or is positioned at simultaneously bed die;
Described gum outlet is used for discharging resin, and it is positioned on the described mold and runs through described mold;
(2.2) inject and/or the suction resin from gum-injecting port, resin enters resin flow channel by gum-injecting port, then enters die cavity by resin flow channel, thereby finishes the perfusion of resin;
(2.3) finish the perfusion of resin after, cured resin, the automobile top-cap goods are taken out in then die sinking, the demoulding;
(2.4) the automobile top-cap goods that step (2.3) made carry out rear curing to be processed, and carries out deburring, polishing again, obtains the fibre reinforced composites automobile top-cap.
2. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that, step (1) or the described demoulding of step (2.3) realize by following stripper apparatus:
(a) with the device of one or more suckers; And/or
(b) be arranged on one or more knock-pins of bed die.
3. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that, the width of described resin flow channel is 2-30mm, and is 0.5-5mm deeply.
4. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that,
In step (1), the fabric after the cutting is changed over to before described the first mould by mechanical device, heat described the first mould; And/or
In step (2.1), the automobile top-cap fiber preform that step (1) is made changes over to before described the second mould by mechanical device, heats described the second mould.
5. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that, described fabric is the fabric that fortifying fibre forms.
6. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1, it is characterized in that, in step (2.2), described inject and/or suck resin from gum-injecting port comprise step: adopt the 0.1-0.6MPa injection pressure from the gum-injecting port resin by injection; And/or mould is vacuumized rear from gum-injecting port suction or suction resin from gum outlet.
7. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that, described resin is fast-curing resin.
8. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1 is characterized in that, has one or two following feature:
(i) described step (2.2) comprises step: adopt the 0.1-0.6MPa injection pressure from gum-injecting port inject the fast-curing resin of deaeration and/or mould vacuumized after from the gum-injecting port suction or suck the fast-curing resin of deaeration, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thereby finish the perfusion of resin; And/or
(ii) described step (2.3) comprises step: after finishing the perfusion of resin, and cured resin 1-30min, the automobile top-cap goods that obtain solidifying, the automobile top-cap goods are taken out in then die sinking, the demoulding.
9. the mould for the preparation of automobile top-cap is characterized in that, described mould comprises: mold, bed die, gum-injecting port and gum outlet;
Wherein, described bed die is positioned at the below of described mold, and when described bed die and described mold closure, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; Has a closed resin flow channel at described die cavity periphery;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described mold or the side of upper surface or bed die, and is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at simultaneously mold or are positioned at simultaneously bed die;
Described gum outlet is used for discharging resin, and it is positioned on the described mold and runs through described mold.
10. the system for the production of automobile top-cap is characterized in that, comprising:
The first mould for the preparation of the automobile top-cap fiber preform;
The second mould for the preparation of automobile top-cap as claimed in claim 9;
The mechanical device that is used for material for transfer; And
Stripper apparatus, described stripper apparatus comprises: (a) adopt the device with one or more suckers; And/or (b) at bed die one or more knock-pins are set.
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| CN201210484676.3A CN102922621B (en) | 2012-11-23 | 2012-11-23 | Production method for automobile roof made of fiber reinforced composite material |
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| CN103496172A (en) * | 2013-09-13 | 2014-01-08 | 常熟市乐德维织造有限公司 | Novel fabric enhanced composite material with high tensile property |
| CN103552610A (en) * | 2013-11-19 | 2014-02-05 | 中国科学院宁波材料技术与工程研究所 | Automobile opening part and manufacturing method thereof |
| CN104552980A (en) * | 2013-10-26 | 2015-04-29 | 宁波华翔汽车零部件研发有限公司 | High-pressure resin transfer molding (RTM) process suitable for rapid molding of carbon fiber automobile parts |
| CN104626609A (en) * | 2014-12-05 | 2015-05-20 | 东莞市海旭新材料技术有限公司 | Preparation method of carbon fiber automobile grill gauge |
| CN104827684A (en) * | 2015-04-20 | 2015-08-12 | 奇瑞汽车股份有限公司 | Motor vehicle pedal manufacturing method and motor vehicle pedal |
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