CN102922621B - 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 PDF

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Publication number
CN102922621B
CN102922621B CN201210484676.3A CN201210484676A CN102922621B CN 102922621 B CN102922621 B CN 102922621B CN 201210484676 A CN201210484676 A CN 201210484676A CN 102922621 B CN102922621 B CN 102922621B
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China
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automobile
cap
resin
gum
mould
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CN201210484676.3A
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Chinese (zh)
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CN102922621A (en
Inventor
祝颖丹
秦永利
孟令军
滑聪
蔡晶
于丽萍
范欣愉
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中国科学院宁波材料技术与工程研究所
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Priority to CN201210484676.3A priority Critical patent/CN102922621B/en
Publication of CN102922621A publication Critical patent/CN102922621A/en
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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

A kind of production method of fibre reinforced composites automobile top-cap

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

Due to greenhouse effects and the energy crisis that becomes increasingly conspicuous of global warming, the energy-conservation most important proposition becoming countries in the world auto industry with environmental protection and face.Automotive light weight technology technology is for energy resource consumption saved by new-energy automobile and traditional combustion engine automobile, reduces one of effective technical way of environmental pollution.A series of excellent properties such as fibre reinforced composites have high specific strength, high ratio modulus, antifatigue, corrosion-resistant, designability is strong, have become the lightweight mainstream technology trend of auto industry field in recent years.

Current, World Main Auto manufacturer, in future automobile technology blueprint, adopts fibrous composite, especially carbon fibre composite all in large quantities, realizes the breakthrough of lightweight and Gao Bi performance matter.Ford's research shows, parts can be reduced 80% by the composite of appropriate design, and the relative steel of processing charges reduce by 60%, and bonding expense welds minimizing 25% to 40% relatively, and composite structure shows fabulous toughness and anti-collision performance.Authority's research display, if vehicle complete vehicle weight reduces by 10%, fuel efficiency can improve 6%-8%; Automobile kerb weight often reduces 100 kilograms, and fuel consumption per hundred kilometers can reduce by 0.3-0.6 liter.From the viewpoint of driving performance and crashworthiness, after automotive light weight technology, acceleration improves, and braking distance reduces, and during collision, inertia reduces, and wagon control sensitivity, stability, noise and vibration aspect are also all improved.

But; the scale application of current fibrous composite automotive part on automobile is very restricted; mainly the volume production technology of its continuous and automatic does not break through; existing technology of preparing as hand stick with paste, shaping, the vacuum aided injection moulding method of traditional RTM etc.; molding cycle is long, hand labor is intensive, production efficiency is low, automaticity is low, unstable product quality, cannot meet the in enormous quantities demand of auto industry to parts.

In sum, this area in the urgent need to develop a kind of with short production cycle, production efficiency high can 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, provides a kind of continuous automatic production method of with short production cycle, fibre reinforced composites automobile top-cap that production efficiency is high.

In first aspect present invention, provide a kind of production method of fibre reinforced composites automobile top-cap, it comprises step:

(1) preparation of automobile top-cap fiber preform

After sizing fabric, cutting fabric; After fabric after cutting is proceeded to the first mould for the preparation of automobile top-cap fiber preform by mechanical device, matched moulds, pressurization; Then die sinking, the demoulding, take out automobile top-cap fiber preform, stand-by;

(2) preparation of automobile top-cap

(2.1) after the automobile top-cap fiber preform that step (1) is obtained being proceeded to the second mould for the preparation of automobile top-cap by mechanical device, matched moulds;

The second 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 close, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; At described die cavity periphery, there is a closed resin flow channel;

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, is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at mold simultaneously or are positioned at bed die simultaneously;

Described gum outlet is for discharging resin, and it to be positioned on described mold and to run through described mold;

(2.2) inject from gum-injecting port and/or suck resin, resin enters resin flow channel by gum-injecting port, then enters die cavity by resin flow channel, thus completes the perfusion of resin;

(2.3) after completing the perfusion of resin, cured resin, then die sinking, the demoulding, take out automobile top-cap goods;

(2.4) the automobile top-cap goods that step (2.3) is obtained are carried out Post RDBMS process, then carry out deburring, polishing, obtain fibre reinforced composites automobile top-cap.

In another preference, described resin flow channel is positioned at die cavity periphery and is positioned at the upper surface of bed die.

In another preference, described resin flow channel is positioned at die cavity periphery and is positioned at the lower surface of mold.

In another preference, described sizing fabric comprises step: on fabric, spray setting agent or sizing powder, thus sizing fabric.

In another preference, described cutting fabric comprises step: according to the surface size cutting fabric of described first mould.

In another preference, described gum outlet is positioned at away from gum-injecting port and slightly offsets from the position at mold center.

In another preference, in step (1), the first described mould comprises: bed die and mold; Wherein, described bed die is positioned at the below of described mold, and jointly forms a die cavity when described bed die and this mold close, and described die cavity is for the manufacture of automobile top-cap fiber preform.

In another preference, step (1) or the demoulding described in step (2.3), realized by following stripper apparatus:

A () is with the device of one or more sucker; And/or

B () is 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 2-30mm (being preferably 5 ± 2mm), and is 0.5-5mm (being preferably 2 ± 1mm) deeply.

In another preference, in step (1), before the fabric after cutting is proceeded to the first described mould by mechanical device, the first mould described in heating; And/or in step (2.1), before automobile top-cap fiber preform obtained for step (1) is proceeded to the second described mould by mechanical device, the second mould described in heating.

In another preference, described fabric is the fabric that fortifying fibre is formed.

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 fabric, basalt fibre fabrics, ceramic fiber fabric, natural fabric, or its combination.

In another preference, in step (2.2), described injecting from gum-injecting port and/or suck resin comprises step: adopt 0.1-0.6MPa injection pressure from gum-injecting port resin by injection; And/or from gum-injecting port suction or suction resin after vacuumizing from gum outlet mould.

In another preference, described resin is fast-curing resin.

In another preference, described fast-curing resin comprises low viscosity thermosetting resin or the thermoplastic resin of in-situ polymerization (can such as be selected from the resin of lower group: 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 the step (2.2) described in () comprises step: adopt 0.1-0.6MPa injection pressure from gum-injecting port inject deaeration fast-curing resin and/or after mould is vacuumized from gum-injecting port suction or the fast-curing resin sucking deaeration, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thus complete the perfusion of resin; And/or

(ii) step (2.3) described in comprises step: after completing the perfusion of resin, cured resin 1-30min (being preferably 5-20min or 5-15min), obtain the automobile top-cap goods solidified, then die sinking, the demoulding, take out automobile top-cap goods.

In second aspect present invention, provide a kind of mould for the preparation of automobile top-cap, 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 close, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; At described die cavity periphery, there is a closed resin flow channel;

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 mold simultaneously or are positioned at bed die simultaneously;

Described gum outlet is for discharging resin, and it to be positioned on described mold and to run through described mold.

In another preference, the width of described resin flow channel is 2-30mm (being preferably 5 ± 2mm), is 0.5-5mm (being preferably 2 ± 1mm) deeply.

In third aspect present invention, provide a kind of system for the production of automobile top-cap, described system comprises:

For the preparation of the first mould of automobile top-cap fiber preform;

The second mould for the preparation of automobile top-cap as described in respect of the second aspect of the invention;

For the mechanical device of material for transfer; And

Stripper apparatus, described stripper apparatus comprises: (a) adopts the device with one or more sucker; And/or (b) arranges one or more knock-pin at bed die.

In another preference, described material is raw material (as fabric) for the preparation of automobile top-cap or automobile top-cap fiber preform.

In another preference, described mechanical device is used for: the first mould as described in being proceeded to by the raw material (as fabric) for the preparation of automobile top-cap; And/or automobile top-cap fiber preform is proceeded to the second described mould.

Should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the present invention and can combining mutually between specifically described each technical characteristic in below (eg embodiment), thus form new or preferred technical scheme.As space is limited, tiredly no longer one by one to state at this.

Accompanying drawing explanation

Fig. 1 is the process structure schematic diagram making fibre reinforced composites automobile top-cap fiber preform.

Fig. 2 is the process structure schematic diagram making fibre reinforced composites automobile top-cap.

Fig. 3 is the resin flow channel structural representation making fibre reinforced composites automobile top cover die.

In above-mentioned each figure, 1 be bed die, 2 be hole sealing agent, 3 be releasing agent, 4 be fiber preform, 5 be sealing joint strip, 6 be mold, 7 be gum-injecting port, 8 be gum outlet, 9 be seal groove, 10 for resin flow channel.

Detailed description of the invention

The present inventor is through long-term and deep research, the unexpected preparation of discovery automobile top-cap fiber preform and the preparation of automobile top-cap adopt separately independently mould, and adopting the mould with specific resin runner to prepare automobile top-cap, achieve the continuous automatic production method of automobile top-cap, the method significantly shorten the fabrication cycle of automobile top-cap, greatly improve its production efficiency, be applicable to suitability for industrialized production.Inventor completes the present invention on this basis.

Second mould

" the second mould " of the present invention refers to the mould for the preparation of automobile top-cap.

Existing composition graphs 2 and Fig. 3 are described in further detail the second mould of the present invention, and it comprises:

The second described 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, when described bed die and described mold salable closed time, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; At described die cavity periphery, there is a closed resin flow channel;

Preferably, described resin flow channel is positioned at the upper surface of described bed die or the lower surface of mold and is distributed in the surrounding of described die cavity.Described resin flow channel is closed runner (as shown in Figure 3).

In addition, described resin flow channel can be the arbitrary shape such as rectangle (as shown in Figure 3), square; The corner of described resin flow channel is the conventional set-up mode such as right angle or circular arc.Resin flow channel is communicated with part plan view shape with gum-injecting port 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.), to ensure that gum-injecting port, resin flow channel can be communicated with for good with this place's die cavity edges.

Preferably, the width of described resin flow channel is preferably 2-30mm (being preferably 5 ± 2mm), is 0.5-5mm (being preferably 2 ± 1mm) deeply.

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 mold simultaneously or are positioned at bed die simultaneously.

Described gum outlet is for discharging resin, and it to be positioned on described mold and to run through described mold, and is interconnected with described die cavity; Preferably, described gum outlet is positioned at away from gum-injecting port and slightly offsets from the position at mold center.

After bed die and mold close, resin is distributed in whole resin flow channel after gum-injecting port enters mould, is then progressively full of whole die cavity, and after being full of whole die cavity, resin will flow out from gum outlet, thus completes whole injecting glue process.The design of resin flow channel realize injecting glue uniform while, decrease the quantity of gum-injecting port, therefore, molding cycle be shorter, efficiency is higher, product quality is more stable.

In " the second mould " used herein, mold and bed die all adopt hard material (as steel, aluminium, composite, timber etc.).

First mould

" the first mould " of the present invention refers to the mould for the preparation of automobile top-cap fiber preform, and substantially substantially identical with the second mould of the present invention, difference is, the first described 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 automobile top-cap fiber preform.

In " the first mould " used herein, bed die can adopt hard material (as steel, aluminium, composite, timber etc.).And mold can adopt hard material (as steel, aluminium, composite, timber etc.), soft material (as silica gel, vacuum bag film etc.) also can be adopted.

Production method

Existing composition graphs 1, Fig. 2 and Fig. 3 are described in further detail production method of the present invention, and 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:

After sizing fabric, cutting fabric; Proceed in the first mould of the present invention by the fabric after cutting by mechanical device (as manipulator), matched moulds, pressurization (is such as forced into 5-20MPa; Preferably to 8-15MPa) (such as 5-60 second a period of time; Preferred 10-30 second), then die sinking, the demoulding, take out automobile top-cap fiber preform 4, stand-by;

In another preference, described sizing fabric comprises step: on fabric, spray setting agent or sizing powder.The setting agent that the present invention is used or sizing powder are the conventional setting agent in this area or sizing powder.Such as described setting agent or sizing powder comprise: thermoset type (as epoxide resin type setting agent/powder, bismaleimide resin type setting agent/powder) and thermoplastic type (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, is suitable for the die cavity manufacturing automobile top-cap fiber preform to make the fabric cut out.

In another preference, when the fabric adopting sizing powder or setting agent to shape described, according to the character of shape powder or setting agent, can before the fabric after cutting be proceeded to the first mould by mechanical device, the first mould (temperature to mating with setting agent) described in heating, especially when described sizing powder or setting agent are middle temperature sizing powder or middle temperature setting agent, as ES-T321 etc.Certainly according to normal temperature setting agent, the first described mould also can not be done to heat.

Preferably, the fabric that the present invention is used is the fabric that fortifying fibre is formed; 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 fabric, basalt fibre fabrics, ceramic fiber fabric, natural fabric, or its combination.

Preferably, also comprise the preparation process of the first mould before described step (1): the surface of polishing, the first mould described in wiped clean, sealing joint strip put into the seal groove of described first mould or be placed on the periphery of described first mould.

(2) preparation of automobile top-cap:

(2.1) automobile top-cap fiber preform obtained for step (1) is proceeded in the second mould of the present invention by mechanical device (as manipulator), then matched moulds.

(2.2) inject from gum-injecting port and/or suck resin, resin enters resin flow channel by gum-injecting port, and enters die cavity by resin flow channel, and after being covered with whole die cavity, resin flows out from gum outlet, thus completes the perfusion of resin.

Preferably, described inject from gum-injecting port and/or suck resin can comprise following step: (i) adopts 0.1-0.6MPa injection pressure from gum-injecting port resin by injection; And/or (ii) the second mould is vacuumized after from gum-injecting port suction or suck resin, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thus complete the perfusion of resin.

(2.3), after completing the perfusion of resin, cured resin, then die sinking, the demoulding, take out automobile top-cap goods.

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) is obtained are carried out Post RDBMS process, then carry out deburring, polishing, obtain fibre reinforced composites automobile top-cap.

Resin used herein is preferably fast-curing resin, and described fast-curing resin comprises low viscosity thermosetting resin or can the thermoplastic resin (being such as selected from the resin of lower group: unsaturated-resin, epoxy resin, vinyl ester resin, polyurethane resin, anionic ring-opening polymerization polyamide-based resin or poly terephthalic acid cyclobutanediol ester resin) of in-situ polymerization.

Preferably, the preparation process of the second following mould is also comprised before described step (2.1):

Behind the surface of polishing, wiped clean the second mould of the present invention, apply hole sealing agent, releasing agent successively on the surface of the second mould;

Then sealing joint strip put into the seal groove of described second mould or be placed on described second mold periphery;

The gum-injecting port place of the second mould described in connection and the pipeline at gum outlet place;

The second mould described in heating (is such as heated to 60-200 DEG C; Be preferably 80-180 DEG C).

The hole sealing agent that the inventive method is used and releasing agent are the conventional hole sealing agent in this area and releasing agent.Such as, 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, synthesis paraffin; Microcrystalline wax; Tissuemat E etc.), the type 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 production method of the present invention, demoulding step can adopt multiple stripper apparatus to assist, to make the goods (i.e. automobile top-cap fiber preform or automobile top-cap) of gained from the harmless demoulding of mould, described stripper apparatus can adopt (a) employing with the device of one or more sucker, by obtained goods sucking-off, thus make article removal; Or (b) is provided with one or more knock-pin at bed die, described knock-pin can upwards eject, thus makes goods demoulding.At the second mould, described central term rod, preferably with valve cock, after die sinking, toward passing into compressed air with the push rod place of valve cock, thus makes article removal.

A kind of fibre reinforced composites automobile top-cap continuous automatic production method provided by the invention, its major advantage is:

Adopt the automobile top-cap that automobile top-cap production method of the present invention is obtained, both maintained the performances such as the rigidity of top cover, intensity, and achieve loss of weight more than 40% compared with metal automobile top cover, and excellent in mechanical performance.

Automobile top-cap production method of the present invention, achieve the continuous automatic production method of automobile top-cap, and fabrication cycle significantly shortens, production efficiency improves greatly, is applicable to suitability for industrialized production.

The second described mould of the present invention, by a gum-injecting port, in conjunction with closed resin flow channel, achieves single gum-injecting port and single gum outlet, and injecting glue is even, mold filling efficiency is high, mould is easily cleared up.

Below in conjunction with concrete enforcement, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.The experimental technique of unreceipted actual conditions in the following example, usually conveniently condition, or according to the condition that manufacturer advises.Unless otherwise indicated, otherwise percentage and number calculate by weight.Unless stated otherwise, the present invention is raw materials used all commercially.

The production method of embodiment 1 carbon fibre reinforced composite automobile top-cap

Step 1: the cleaning of the first mould and preparation

The first mould for the preparation of automobile top-cap fiber preform shown in one Fig. 1 is provided;

By the bed die 1 of the first mould and the surface of mold 6 smooth with 1000 order sand paperings, then with alcohol or acetone, surface wipes is 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

In east, beautiful T700-12K carbon fiber twill treats that cutting place sprays a small amount of setting agent (trade name: AIRTAC 2, purchased from Airtech company), adopt cutting according to surface size cutting 4 blocks of carbon cloths of the first mould again, 4 blocks of carbon cloths are proceeded to by manipulator automatic landing poststack in the first mould processed through step 1, then matched moulds, under 9MPa pressurize 10 seconds, after die sinking, the demoulding, take out 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 Fig. 2 is provided;

By the bed die 1 of the second mould and mold 6 surface smooth with 1000 order sand paperings, by alcohol or acetone wiped clean;

After alcohol or acetone volatilization completely, bed die 1 and the coating of mold 6 surface uniform be coated with hole sealing agent 2 (trade name: 15Sealer, purchased from CHEM-TREND company); After hole sealing agent solidification then bed die 1 and mold 6 surface uniform coating releasing agent 3 (trade name: purchased from CHEM-TREND company), after remover is dry, repeat this operation 2 times again;

Sealing joint strip 5 is put into the seal groove of bed die and mold, the gum-injecting port 7 of the second mould and gum outlet 8 are 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 obtained proceeds to the second mould processed through step 3 by manipulator) in; The mold 6 of closed the second described mould and bed die 1; 0.2MPa injection pressure is adopted 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 being positioned at bed die side, mass ratio), resin flows out rear closedown gum-injecting port and gum outlet from gum outlet 8;

Step 5: the demoulding

Die sinking after resin solidification 10min, with the surface of the device absorbent articles with multiple sucker, makes goods from the harmless demoulding of mould, takes out goods;

Step 6: automobile top-cap post processing

The goods of step 5 gained are proceeded to baking oven, under 150 degree, carries out Post RDBMS process 1 hour, then carry out deburring, polishing, obtain carbon fibre reinforced composite automobile top-cap.

The production method of embodiment 2 carbon fibre reinforced composite automobile top-cap

Preparation method's similar embodiment 1, unlike the following condition of employing:

In step 3, the second mold heated to 150 is spent;

In step 4, automobile top-cap fiber preform obtained for step 2 is proceeded to by manipulator in the second mould that step 3 is processed; The mold 6 of closed described second mould and bed die 1, be evacuated to not higher than 2.4kPa from gum outlet 8 pairs of moulds, then sucked the anionic ring-opening polymerization polyamide 6 (caprolactam: caprolactam magnesium bromide: hexa-methylene-1 of deaeration from gum-injecting port 7 by vacuum, 6-bis-formyl caprolactam=97:1.0:2.0, mol ratio), resin flows out rear closedown gum-injecting port and gum outlet from gum outlet 8.

In step 6, goods are carried out Post RDBMS process 1 hour under 150 degree.

The production method of embodiment 3 carbon fibre reinforced composite automobile top-cap

Preparation method's similar embodiment 1, unlike the following condition of employing:

The knock-pin of one band valve cock is set in bed die 1 center of the second mould;

In step 5, die sinking after 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. compared with metal automobile top cover, production method of the present invention have employed lightweight, excellent performance fibre reinforced composites as the making raw material of automobile top-cap, obtained top cover is while performance such as maintenance rigidity, intensity etc., also achieve top cover loss of weight more than 40%, and excellent in mechanical performance.

2., in prior art, usually adopt same mould successively to prepare automobile top-cap fiber preform and automobile top-cap, such method production cycle is long, efficiency is low.And production method of the present invention, when preparing automobile top-cap fiber preform and automobile top-cap, have employed the first mould of the present invention and the second mould respectively, achieve the continuous automatic production method of automobile top-cap, significantly shorten the fabrication cycle of automobile top-cap, greatly improve its production efficiency, be applicable to suitability for industrialized production.

3. the existing mould for the preparation of automobile top-cap has multiple gum-injecting port for resin by injection and gum outlet usually, and many gum-injecting ports and many gum outlets usually have injecting glue uneven, increase operation and the defect such as mold clean is time-consuming.And the second mould that production method of the present invention adopts is by a gum-injecting port, in conjunction with closed resin flow channel, achieve single gum-injecting port and single gum outlet, and possess the advantages such as injecting glue is even, mold filling efficiency is high, mould is easily cleared up.

The all documents mentioned in the present invention are quoted as a reference all in this application, are just quoted separately as a reference as each section of document.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after having read above-mentioned instruction content of the present invention.

Claims (10)

1. a production method for fibre reinforced composites automobile top-cap, is characterized in that,
Comprise step:
(1) preparation of automobile top-cap fiber preform
After sizing fabric, cutting fabric; After fabric after cutting is proceeded to the first mould for the preparation of automobile top-cap fiber preform by mechanical device, matched moulds, pressurization; Then die sinking, the demoulding, take out automobile top-cap fiber preform, stand-by;
Wherein, described sizing fabric comprises step: on fabric, spray setting agent or sizing powder, thus sizing fabric;
(2) preparation of automobile top-cap
(2.1) after the automobile top-cap fiber preform that step (1) is obtained being proceeded to the second mould for the preparation of automobile top-cap by mechanical device, matched moulds;
The second 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 close, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; At described die cavity periphery, there is a closed resin flow channel;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described bed die, is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at bed die simultaneously; Described resin flow channel is positioned at die cavity periphery and is positioned at the upper surface of bed die;
Described gum outlet is for discharging resin, and it to be positioned on described mold and to run through described mold;
Wherein, described gum outlet is positioned at away from gum-injecting port and slightly offsets from the position at mold center;
(2.2) inject from gum-injecting port and/or suck resin, resin enters resin flow channel by gum-injecting port, then enters die cavity by resin flow channel, thus completes the perfusion of resin;
(2.3) after completing the perfusion of resin, cured resin, then die sinking, the demoulding, take out automobile top-cap goods;
(2.4) the automobile top-cap goods that step (2.3) is obtained are carried out Post RDBMS process, then carry out deburring, polishing, obtain fibre reinforced composites automobile top-cap.
2. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1, it is characterized in that, step (1) or the demoulding described in step (2.3), realized by following stripper apparatus:
A () is with the device of one or more sucker; And/or
B () is 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, it 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), before the fabric after cutting is proceeded to the first described mould by mechanical device, the first mould described in heating; And/or
In step (2.1), before automobile top-cap fiber preform obtained for step (1) is proceeded to the second described mould by mechanical device, the second mould described in heating.
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 is formed.
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 injecting from gum-injecting port and/or suck resin comprises step: adopt 0.1-0.6MPa injection pressure from gum-injecting port resin by injection; And/or from gum-injecting port suction or suction resin after vacuumizing from gum outlet mould.
7. the production method of fibre reinforced composites automobile top-cap as claimed in claim 1, it 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 having one or two following feature:
I the step (2.2) described in () comprises step: adopt 0.1-0.6MPa injection pressure from gum-injecting port inject deaeration fast-curing resin and/or after mould is vacuumized from gum-injecting port suction or the fast-curing resin sucking deaeration, after resin flows out from gum outlet, close gum-injecting port and gum outlet, thus complete the perfusion of resin; And/or
(ii) step (2.3) described in comprises step: after completing the perfusion of resin, cured resin 1-30min, obtains the automobile top-cap goods solidified, then die sinking, the demoulding, takes out automobile top-cap goods.
9. for the preparation of a mould for automobile top-cap, it 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 close, both form a die cavity jointly, and described die cavity is for the manufacture of automobile top-cap; At described die cavity periphery, there is a closed resin flow channel;
Described gum-injecting port is used for pouring into resin, and it is positioned at the side of described bed die, and is interconnected with described resin flow channel, and gum-injecting port and resin flow channel are positioned at bed die simultaneously; Described resin flow channel is positioned at die cavity periphery and is positioned at the upper surface of bed die;
Described gum outlet is for discharging resin, and it to be positioned on described mold and to run through described mold;
Wherein, described gum outlet is positioned at away from gum-injecting port and slightly offsets from the position at mold center.
10. for the production of a system for automobile top-cap, it is characterized in that, comprising:
For the preparation of the first mould of automobile top-cap fiber preform;
For the preparation of the second mould of automobile top-cap, described second mould is the mould for the preparation of automobile top-cap according to claim 9;
For the mechanical device of material for transfer; And
Stripper apparatus, described stripper apparatus comprises: (a) adopts the device with one or more sucker; And/or (b) arranges one or more knock-pin at bed die.
CN201210484676.3A 2012-11-23 2012-11-23 Production method for automobile roof made of fiber reinforced composite material CN102922621B (en)

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