CN107584779A - The female mould forming method of composite product - Google Patents
The female mould forming method of composite product Download PDFInfo
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- CN107584779A CN107584779A CN201610539229.1A CN201610539229A CN107584779A CN 107584779 A CN107584779 A CN 107584779A CN 201610539229 A CN201610539229 A CN 201610539229A CN 107584779 A CN107584779 A CN 107584779A
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- China
- Prior art keywords
- former
- female mould
- forming method
- mould forming
- joint strip
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Abstract
The invention provides a kind of female mould forming method of composite product, comprise the following steps：S10, there is the composite layer of adhesion characteristic to predetermined number of layers after paving pressurization in former；S20, the sealing joint strip of plasticity is placed on the composite layer in former；S30, vacuum bag is beaten to former, vacuumized；S40, sealing joint strip and vacuum bag, and repeat step S10 to step S30 are removed, until the paving of composite layer whole is completed；S50, solidify composite layer, to form composite product.It is an object of the invention to provide a kind of female mould forming method of composite product, eliminate occur during composite product female mould forming arch upward, build bridge and loose phenomenon, improve parts quality.
Description
Technical field
The present invention relates to a kind of female mould forming method of composite product.
Background technology
Composite product often uses female mould forming, prepreg craft paving technique to ensure that smooth-shaped is smooth.
But in female mould forming technique, because former generally has wedge angle position, especially form the moon of V-type composite product
Mould, due to such wedge angle position, during bag vacuum is beaten, the prepreg in wedge angle position can not be carried out
Effective pressurization.Therefore, the multilayer prepreg at wedge angle position is caused can not compress paving, thus the composite system after curing molding
Phenomena such as easily being arched upward at the edge or tip of part, building bridge, be loose, causes parts scrap.Using common female mould forming method
The product that cannot be conformed to quality requirements.
The content of the invention
For problem present in correlation technique, it is an object of the invention to provide a kind of former of composite product into
Type method, eliminate occur during composite product female mould forming arch upward, build bridge and loose phenomenon, improve parts quality.
The invention provides a kind of female mould forming method of composite product, comprise the following steps：S10, in former
There is the composite layer of adhesion characteristic to predetermined number of layers after paving pressurization；S20, the sealing joint strip of plasticity is placed on former
In composite layer on；S30, vacuum bag is beaten to former, vacuumized；S40, sealing joint strip and vacuum bag are removed, and repeat to walk
Rapid S10 to step S30, until the paving of composite layer whole is completed；S50, solidify composite layer, to form composite system
Part.
According to the present invention, the sealing joint strip of plasticity is the stickiness adhesive tape after being coated using barrier film.
According to the present invention, former has corner；In step S20, the sealing joint strip of plasticity is placed on composite
The opening position in the corner of former is corresponded on layer.
According to the present invention, the shape of the sealing joint strip of plasticity is identical with the shape in the corner of former.
According to the present invention, former is V-type former or U-shaped former.
According to the present invention, composite layer is prepreg or synthetic resin material.
According to the present invention, predetermined number of layers is 1-6 layers.
According to the present invention, step S30 performs spreads teflon cloth and airfelt for the opening in former, and accomplishes fluently true
Empty bag is sealed and vacuumized, and the sealing joint strip using atmospheric pressure pressurization plasticity makes sealing joint strip deformation compress composite wood
The bed of material.
According to the present invention, composite layer is bonded together after being compressed by the sealing joint strip deformation of plasticity.
According to the present invention, it is to solidify composite layer former heating that step S50, which is performed, is cooled to after room temperature to be formed
Composite product.
The advantageous effects of the present invention are：
By the present invention in that with the sealing joint strip of plasticity, the composite wood sealing joint strip of plasticity being placed in former
On the bed of material, in the vacuum of female mould forming, compress sealing joint strip deformation using atmospheric pressure pressurization adhesive tape multiple
Condensation material layer, ensure that can compress paving between every layer of composite layer, ensure its Forming Quality in former edge,
Particularly V-type composite product, eliminate that composite product occurs when former edge is molded arches upward, builds bridge and loose
Phenomenon, improve parts quality.
Brief description of the drawings
Fig. 1 is the flow chart of the female mould forming method of the composite product of the present invention.
Fig. 2 is the schematic diagram of the female mould forming of the composite product of the present invention.
Embodiment
Refer to the attached drawing discloses the embodiment shown.It will be appreciated, however, that the disclosed embodiments be only can with various and
The embodiment that alternative form is shown.Accompanying drawing is not necessarily drawn to scale, and it is specific to show to zoom in or out some features
The details of part.Disclosed concrete structure and functional details should not be construed as limiting, but is used as and is used to instruct this area
How technical staff puts into practice the representative basis of the disclosure.
With reference to figure 1 and Fig. 2, the invention provides a kind of female mould forming method of composite product, comprise the following steps：
S10, there is the composite layer 3 of adhesion characteristic to predetermined number of layers after paving pressurization in former 1；S20, by the sealing of plasticity
Adhesive tape 9 is placed in former 1 on composite layer 3；S30, vacuum bag 7 is beaten to former 1, vacuumized；S40, remove sealing joint strip 9
And vacuum bag 7, and repeat step S10 to step S30, until whole pavings of composite layer 3 are completed；S50, solidify composite
Layer 3, to form composite product.In the S20 steps of the present invention, the effect of sealing joint strip 9 is vacuumizing in female mould forming
During, using atmospheric pressure pressurization adhesive tape 9 make sealing joint strip 9 deformation compress composite layer, ensure that every layer it is compound
Paving can be compressed between material layer 3, is prevented in the edge of composite product, such as the point of V-type composite product
At corner edge, arch upward, build bridge and loose phenomenon in manufacturing process.
In addition, the sealing joint strip of plasticity is the stickiness adhesive tape after being coated using barrier film.Composite layer 3 is prepreg
Or synthetic resin material.Prepreg refers to impregnate fiber cloth under conditions of strict control using resin, and resin and fiber is made
The assembly of cloth, is the intermediate materials for manufacturing composite, the fiber cloth of " prepreg " can be carbon fiber, glass fibre,
Kevlar fibers, boron fibre or string, the resin of " prepreg " can be epoxy resin, polyimides, thermoplastic poly ammonia
Ester, polyamide, polyphenylene sulfide, PAEK or polyvinyl alcohol.Wherein, barrier film cladding stickiness adhesive tape is material conventional in tradition
Material is made, it is preferable that barrier film is common plastic sheeting, and stickiness adhesive tape can be other rubber in addition to silica gel.Compare
In in the prior art using silica gel soft mode or using negative and positive mold forming need particular design and manufacture the defects of, shaping of the invention
The thinking that method breaks through silica gel soft mode limits, and the most frequently used sealing joint strip 9 solves problem in selection production, thus designs and manufacture
Cost is low, simple to operate.
With reference to figure 1 and Fig. 2, in step S10 former 1 during paving composite layer 3, composite layer 3 is preferred
For prepreg, the prepreg be with resin matrix under conditions of strict control impregnating continuous fibres or fabric, resinophore groups processed
The composition of body and reinforcement.In addition, the predetermined number of layers of paving composite layer 3 is 1-6 layers in former 1, preferable real
Apply in example, the predetermined number of layers of the composite layer 3 of 1-6 layers can preferably ensure finally after the completion of each process of deployment
The compactness of composite layer.Wherein, in more preferred embodiment, predetermined number of layers is 3 layers, it is of course possible to understanding,
The predetermined number of layers of paving composite layer 3 can be as the case may be more than the 1 layer different number of plies in former 1.In addition,
In former 1 before paving composite layer 3, releasing agent 2 is covered with the inner side of former 1, the effect of releasing agent 2 is to pass through layer
After folded composite layer 3 forms composite product, releasing agent 2 can effectively help composite product and former 1 to separate.
Former 1 has corner；In step S20, the sealing joint strip 9 of plasticity is placed on composite layer 3 corresponding
The opening position in the corner of former 1, as former 1 includes V-type former or U-shaped former.Corner includes corner, tip or other
Position with tortuous angle.Also, the shape of the sealing joint strip of plasticity is identical with the shape in corner.Wherein, composite
Layer is compressed and is bonded together by the sealing joint strip 9 of plasticity.Wherein, for being arched upward in composite material shaping process, frame
Bridge and loose phenomenon, these problems occur mainly in the corner of former 1, and placing sealing joint strip 9 in the corner of former 1 can have
Solve the above problems to effect.
With continued reference to Fig. 1 and Fig. 2, step S30 performs spreads teflon cloth 4 and airfelt for the opening in former 1
6, wherein, in a preferred embodiment, porous release film 5 is covered between teflon cloth 4 and airfelt 6, and accomplish fluently true
Empty bag 7 and sealant tape 8 are sealed and vacuumized, and the sealing joint strip 9 using atmospheric pressure pressurization plasticity makes sealing joint strip 9
Deformation compresses composite layer 3.In a preferred embodiment, the material of vacuum bag 7 can be flow-guiding cloth, and flow-guiding cloth is led for resin
Flow medium, promote resin flowing in " vacuum importing resin " technique, be applicable polyester, vinyl, epoxy-resin systems.By using
After the vacuumize process of apparatus for vacuum producing 10, because the inner and outer air pressure of vacuum bag 7 is different so that air pressure inside is significantly smaller than outside gas
Pressure, product is pressurizeed by vacuumizing, makes that product is more closely knit, the more preferable moulding process of mechanical property.So outside vacuum bag 7
Sealing joint strip 9 is imposed severe pressure, to form the good composite product of edge quality, in other optional embodiments
In, this method is suitable for hand paste, injection, prepreg moulding process, and baking oven, autoclave etc. can be coordinated to use.Vacuum-bag process
The advantages of technique, includes：Fiber content is high, and the mechanical property of product is more preferable；Uniform pressurization, the performance of product are uniform；Effectively control
Product thickness and gel content；Reduce the bubble in product；Complicated, large-scale product can be molded；Reduce damage of the fugitive constituent to personnel
Wound etc..
In step s 40, the repeat step size of composite product and paving composite in former 1 needed for
The predetermined number of layers of layer 3 finally determines the number of repetition of repeat step.Afterwards, composite is made to the heating of former 1 in step s 50
Layer 3 solidifies, and is cooled to room temperature and forms composite product.The female mould forming technology of the present invention can apply in multiple fields,
Such as the application field of Aero-Space, wind blade, ship, train, automobile, sports equipment and safety glass etc..
Claims (10)
1. a kind of female mould forming method of composite product, it is characterised in that comprise the following steps：
S10, there is the composite layer of adhesion characteristic to predetermined number of layers after paving pressurization in former；
S20, the sealing joint strip of plasticity is placed on the composite layer in the former；
S30, vacuum bag is beaten to the former, vacuumized；
S40, the sealing joint strip and the vacuum bag, and repeating said steps S10 to step S30 are removed, until described compound
The paving of material layer whole is completed；
S50, solidify the composite layer, to form the composite product.
2. female mould forming method according to claim 1, it is characterised in that the sealing joint strip of the plasticity be use every
Stickiness adhesive tape after being coated from film.
3. female mould forming method according to claim 1 or 2, it is characterised in that the former has corner；In the step
In rapid S20, the sealing joint strip of the plasticity is placed on to the opening position in the corner that former is corresponded on the composite layer.
4. female mould forming method according to claim 3, it is characterised in that the shape of the sealing joint strip of the plasticity with
The shape in the corner of the former is identical.
5. female mould forming method according to claim 3, it is characterised in that the former is V-type former or U-shaped former.
6. female mould forming method according to claim 1, it is characterised in that the composite layer is prepreg or synthesis
Resin material.
7. female mould forming method according to claim 1, it is characterised in that the predetermined number of layers is 1-6 layers.
8. female mould forming method according to claim 1, it is characterised in that it is in the former that the step S30, which is performed,
Opening spread teflon cloth and airfelt, and accomplish fluently vacuum bag and sealed and vacuumized, pressurizeed using atmospheric pressure
The sealing joint strip of the plasticity makes the sealing joint strip deformation compress the composite layer.
9. female mould forming method according to claim 8, it is characterised in that the composite layer is by the plasticity
Sealing joint strip deformation is bonded together after compressing.
10. female mould forming method according to claim 1, it is characterised in that it is to the former that the step S50, which is performed,
Heating solidifies the composite layer, is cooled to after room temperature to form the composite product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539229.1A CN107584779A (en) | 2016-07-08 | 2016-07-08 | The female mould forming method of composite product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610539229.1A CN107584779A (en) | 2016-07-08 | 2016-07-08 | The female mould forming method of composite product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107584779A true CN107584779A (en) | 2018-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610539229.1A Pending CN107584779A (en) | 2016-07-08 | 2016-07-08 | The female mould forming method of composite product |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656231A (en) * | 1994-08-08 | 1997-08-12 | Blackmore; Richard D. | Method of forming advanced cured resin composite parts |
| US6311542B1 (en) * | 1997-02-27 | 2001-11-06 | Advanced Composites Group Ltd. | Moulding methods and moulded articles |
| CN101391488A (en) * | 2008-08-22 | 2009-03-25 | 成都飞机工业（集团）有限责任公司 | Curing formation method for non-flat plate composite product and shaping mould |
| CN104162996A (en) * | 2014-06-30 | 2014-11-26 | 江苏恒神纤维材料有限公司 | A manufacturing process of a carbon-fibre composite material U-shaped part |
| CN105479768A (en) * | 2015-11-23 | 2016-04-13 | 西北工业大学 | Self-resistance electric heating curing method for resin-based carbon fiber composite material |
-
2016
- 2016-07-08 CN CN201610539229.1A patent/CN107584779A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5656231A (en) * | 1994-08-08 | 1997-08-12 | Blackmore; Richard D. | Method of forming advanced cured resin composite parts |
| US6311542B1 (en) * | 1997-02-27 | 2001-11-06 | Advanced Composites Group Ltd. | Moulding methods and moulded articles |
| CN101391488A (en) * | 2008-08-22 | 2009-03-25 | 成都飞机工业（集团）有限责任公司 | Curing formation method for non-flat plate composite product and shaping mould |
| CN104162996A (en) * | 2014-06-30 | 2014-11-26 | 江苏恒神纤维材料有限公司 | A manufacturing process of a carbon-fibre composite material U-shaped part |
| CN105479768A (en) * | 2015-11-23 | 2016-04-13 | 西北工业大学 | Self-resistance electric heating curing method for resin-based carbon fiber composite material |
Non-Patent Citations (1)
| Title |
|---|
| 邢丽英: "《先进树脂基复合材料自动化制造技术》", 30 June 2014, 航空工业出版社 * |
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Application publication date: 20180116 |