CN1442279A - Composite material vacuum injection moulding method - Google Patents
Composite material vacuum injection moulding method Download PDFInfo
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- CN1442279A CN1442279A CN 03109816 CN03109816A CN1442279A CN 1442279 A CN1442279 A CN 1442279A CN 03109816 CN03109816 CN 03109816 CN 03109816 A CN03109816 A CN 03109816A CN 1442279 A CN1442279 A CN 1442279A
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- resin
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- injection molding
- vacuum injection
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Abstract
A vacuum injection moulding method for composite material includes such steps as making a soft mould having a resin flowing channel in a side, attaching it to a hard mould to form a mould cavity, vacuumizing it, injecting resin in it, sealing the channel, solidifying and demoulding. Its advantages are high moulding efficiency and low cost.
Description
Technical field
The present invention relates to a kind of vacuum injection molding method, particularly a kind of vacuum injection molding method of composite material structural member.
Technical background
U.S. Pat 4902215 has been announced a kind of resin transfer molding technology in nineteen ninety, form die cavity around wherein film or vacuum bag being sealed in mould, reinforcing material is gone in the shop in the die cavity, lay resin dispersion medium between reinforcing material and film or the vacuum bag, the medium of employing is generally high permeating medium.Disclosed a kind of composite element forming method of complicated shape in another piece U.S. Pat 5052906, also be to adopt the moulding of vacuum aided injecting method, its concrete operations are will be in mold filling process, keep the flow velocity of resin and the regularity that guarantees product, lay peel ply or high permeating medium successively between the reinforcing material in vacuum bag film and die cavity.
Publication number is CN1278762, and the Chinese patent that calendar year 2001 announces is introduced a kind of large composite core structures that forms with vacuum assisted resin transfer molding, wherein adopts kiss core between fibrous material, with vacuum bag it is sealed on the surface of mould to prepare again.This method is provided with groove or the fillet on one or more main feeder conduits and the core, help that uncured resin is flow to and flow through between the core and core and mould between fibrous material in.
In the above-mentioned disclosed technology, including a slice in its mould is to be formed by pliable and tough vacuum bag film, in order to impel resin in die cavity, to flow fast and to soak into fibre reinforced materials, lay peel ply or release cloth, high permeating medium successively between reinforcing material and vacuum bag film.Also need in addition to seal with vacuum compound, to reach the requirement of vacuum aided to the mould sealing property, the price of above-mentioned fluid sealant, film, vacuum bag, high permeating medium and peel ply or release cloth is all very expensive, and the probability of recycling is very little, cause the cost height, in the actual production process of large-sized structural parts, expend lot of manpower and material resources.
Summary of the invention
The purpose of this invention is to provide a kind of process, simple to operate, low cost of manufacture, novel evacuated injection moulding method that shaping efficiency is high simplified.
For achieving the above object, the present invention has adopted following technical scheme: a kind of composite vacuum injection molding method, it is characterized in that: it comprises the steps:
1) manufacture the soft mode that is provided with resin flow channel in a side, described soft mode is provided with the runner mouth that communicates with resin flow channel, and described resin flow channel and described soft mode are one-body molded;
2) soft mode that a side of step 1) moulding is had a resin flow channel is overlying on the surface and is covered with on the die of reinforcing material, and described soft mode and described die are sealed into one, and its joint forms die cavity, and described die cavity two ends are provided with vacuum port; Described die cavity communicates with the external world by described vacuum port, by the vavuum pump of peripheral hardware described die cavity is evacuated;
3) the runner mouth that is formed by step 1) injects resin, be full of in the described die cavity behind the resin the sealing of runner mouth, behind the described resin gel with its vacuum port sealing;
4) with material cured, the demoulding of step 3) moulding.
Described soft mode is an elastomeric material, and its elastomeric material is selected silastic material for use.
Described reinforcing material adopts a kind of in fiber cloth, carbon fiber or the glass fibre; Described resin adopts the liquid thermosetting resin, and described liquid thermosetting resin is selected unsaturated polyester resin or epoxy resin for use.
Described die is a kind of in fiberglass or the metal material.
Described solidification temperature, hardening time and demould time, its hardening time and temperature are determined according to the requirement of the self performance of used resin material.
The present invention adopts said method, and it has the following advantages:
1. directly on soft mode, offer resin flow channel, replaced the use of special-purpose permeating medium and peel ply, reduced manufacturing cost, simplified technological operation with soft mode.
2. on soft mode, design resin flow channel and moulding simultaneously according to products characteristics, the resin injection rate is accelerated, improved shaping efficiency through vacuumizing.
3. soft mode can use repeatedly repeatedly, and is indeformable, and not can with the die adhesion.
4. remove the placement process of permeating medium and peel ply from, improved the stability of technology.
5. soft mode can compress reinforcing material during owing to moulding, has reduced product internal voids rate, and the density of product is improved.
Description of drawings
Fig. 1 is a molding structure schematic diagram of the present invention
Fig. 2 is a resin flow channel structural representation of the present invention
The specific embodiment
As shown in Figure 1: the silicon rubber that the present invention adopts has better elastic, can be processed into the soft mode 1 of different shape on demand, and silicon rubber itself also has certain rigidity, therefore can protect the shape invariance of product.In moulding, the silicon rubber inboard has resin flow channel, with its resin flow channel and mantle 1 moulding simultaneously; Soft mode 1 inboard after the moulding is overlying on die 6 upsides that the surface is covered with fiber glass reinforcement, with sealing strip 4 sealings, locks with flange around it again; Vacuum port 5 is left in both sides, its vacuum port 5 joins with the peripheral hardware vavuum pump, soft mode 1 forms die cavity 3 with the resin flow channel that die 6 is covering in the face, vavuum pump with peripheral hardware is evacuated die cavity 3, and the negative pressure of vacuum in the die cavity 3 is adsorbed on silicon rubber soft mode 1 on the die 6 tightly, with the fiber glass reinforcement compacting in the die cavity 3, reduced porosity, the content of the fibre reinforced materials in the goods has been improved, make the structure of its goods fine and close more, improved the performance of product.
As shown in Figure 2, peculiar performance of silicon rubber self and the design feature that will make product, in moulding Fig. 1 in the machine silicon rubber soft mode 1, open the runner 9 of certain size on its surface, runner is the groove shape, divide resin sprue 7 and auxilliary runner 8, when resin after runner mouth 2 injects the die cavity 3 of Fig. 1, to at first be full of sprue 7, be full of auxilliary runner 8 and then, soak into reinforcing material gradually, resin is full of rear enclosed runner mouth, product is through curing, stripping forming, and the time of curing and temperature determine according to the characteristic that the resin that is adopted self is had.
Claims (6)
1. composite vacuum injection molding method, it is characterized in that: it may further comprise the steps:
1) manufacture the soft mode that is provided with resin flow channel in a side, described soft mode is provided with the runner mouth that is communicated with resin flow channel, and described resin flow channel and described soft mode are one-body molded;
2) soft mode that a side of step 1) moulding is had a resin flow channel is overlying on the surface and is covered with on the die of reinforcing material, and described soft mode and described die are sealed into one, and its joint forms die cavity, and described die cavity two ends are provided with vacuum port; Described die cavity communicates with the external world by described vacuum port, by the vavuum pump of peripheral hardware described die cavity is evacuated;
3) the runner mouth that is formed by step 1) injects resin, be full of in the described die cavity behind the resin the sealing of runner mouth, behind the described resin gel with its vacuum port sealing;
4) with material cured, the demoulding of step 3) moulding.
2. composite vacuum injection molding method according to claim 1 is characterized in that: described soft mode is an elastomeric material.
3. composite vacuum injection molding method according to claim 2 is characterized in that: described elastomeric material is a silastic material.
4. composite vacuum injection molding method according to claim 1 is characterized in that: described reinforcing material is a kind of in fiber cloth, carbon fiber or the glass fibre, and described resin is the liquid thermosetting resin.
5. composite vacuum injection molding method according to claim 4 is characterized in that: described liquid thermosetting resin is unsaturated polyester resin or epoxy resin.
6. composite vacuum injection molding method according to claim 1 is characterized in that: described die adopts a kind of in fiberglass or the metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03109816 CN1442279A (en) | 2003-04-11 | 2003-04-11 | Composite material vacuum injection moulding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03109816 CN1442279A (en) | 2003-04-11 | 2003-04-11 | Composite material vacuum injection moulding method |
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| CN1442279A true CN1442279A (en) | 2003-09-17 |
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| CN 03109816 Pending CN1442279A (en) | 2003-04-11 | 2003-04-11 | Composite material vacuum injection moulding method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933952B (en) * | 2004-01-20 | 2011-03-30 | 塔奇斯通研究实验室有限公司 | Carbon foam composite tooling and methods for using the same |
| CN101486258B (en) * | 2009-02-27 | 2011-04-06 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing megawatt wind power generator blade root |
| CN102130517A (en) * | 2010-01-20 | 2011-07-20 | 西门子公司 | Magnet assembly |
| CN102166802A (en) * | 2011-01-04 | 2011-08-31 | 哈尔滨飞机工业集团有限责任公司 | Method for sealing die parting surface by using silicone rubber tube |
| CN102922749A (en) * | 2012-10-29 | 2013-02-13 | 宜兴台玉环境工程设备有限公司 | Fabricating method and fabricating device of glass reinforced plastic impeller base plate |
| CN105082568A (en) * | 2015-08-10 | 2015-11-25 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Liquid molding process of special-shaped composite structural part |
| CN107471686A (en) * | 2017-08-22 | 2017-12-15 | 哈尔滨工程大学 | A kind of 3 D stereo glass fabric reinforced epoxy sandwich composite preparation technology |
| CN108189424A (en) * | 2017-12-28 | 2018-06-22 | 江苏金风科技有限公司 | Blade assembly mold and the method using its manufacture blade assembly |
| CN110815864A (en) * | 2019-10-18 | 2020-02-21 | 中航通飞华南飞机工业有限公司 | Forming process method for composite material part with complex profile |
| CN111688238A (en) * | 2020-05-27 | 2020-09-22 | 长春三友智造科技发展有限公司 | Method for forming thermosetting polymer fiber composite material part |
| CN112536946A (en) * | 2020-11-20 | 2021-03-23 | 上海复合材料科技有限公司 | Composite material conical section forming die pressurized by using soft die |
| CN112743990A (en) * | 2019-10-31 | 2021-05-04 | 精工爱普生株式会社 | Flow path structure, method of manufacturing the same, liquid ejecting apparatus, and liquid ejecting head |
| CN113924205A (en) * | 2019-06-10 | 2022-01-11 | 劳斯莱斯股份有限公司 | Lay-up equipment |
-
2003
- 2003-04-11 CN CN 03109816 patent/CN1442279A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1933952B (en) * | 2004-01-20 | 2011-03-30 | 塔奇斯通研究实验室有限公司 | Carbon foam composite tooling and methods for using the same |
| CN101486258B (en) * | 2009-02-27 | 2011-04-06 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing megawatt wind power generator blade root |
| CN102130517A (en) * | 2010-01-20 | 2011-07-20 | 西门子公司 | Magnet assembly |
| CN102166802A (en) * | 2011-01-04 | 2011-08-31 | 哈尔滨飞机工业集团有限责任公司 | Method for sealing die parting surface by using silicone rubber tube |
| CN102922749A (en) * | 2012-10-29 | 2013-02-13 | 宜兴台玉环境工程设备有限公司 | Fabricating method and fabricating device of glass reinforced plastic impeller base plate |
| CN105082568A (en) * | 2015-08-10 | 2015-11-25 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Liquid molding process of special-shaped composite structural part |
| CN107471686A (en) * | 2017-08-22 | 2017-12-15 | 哈尔滨工程大学 | A kind of 3 D stereo glass fabric reinforced epoxy sandwich composite preparation technology |
| CN108189424A (en) * | 2017-12-28 | 2018-06-22 | 江苏金风科技有限公司 | Blade assembly mold and the method using its manufacture blade assembly |
| CN113924205A (en) * | 2019-06-10 | 2022-01-11 | 劳斯莱斯股份有限公司 | Lay-up equipment |
| CN113924205B (en) * | 2019-06-10 | 2024-03-26 | 劳斯莱斯股份有限公司 | Laying device |
| CN110815864A (en) * | 2019-10-18 | 2020-02-21 | 中航通飞华南飞机工业有限公司 | Forming process method for composite material part with complex profile |
| CN112743990A (en) * | 2019-10-31 | 2021-05-04 | 精工爱普生株式会社 | Flow path structure, method of manufacturing the same, liquid ejecting apparatus, and liquid ejecting head |
| CN111688238A (en) * | 2020-05-27 | 2020-09-22 | 长春三友智造科技发展有限公司 | Method for forming thermosetting polymer fiber composite material part |
| CN112536946A (en) * | 2020-11-20 | 2021-03-23 | 上海复合材料科技有限公司 | Composite material conical section forming die pressurized by using soft die |
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