CN103753829A - RTM preform and RTM rapid forming die applying the same - Google Patents
RTM preform and RTM rapid forming die applying the same Download PDFInfo
- Publication number
- CN103753829A CN103753829A CN201310693924.XA CN201310693924A CN103753829A CN 103753829 A CN103753829 A CN 103753829A CN 201310693924 A CN201310693924 A CN 201310693924A CN 103753829 A CN103753829 A CN 103753829A
- Authority
- CN
- China
- Prior art keywords
- rtm
- precast body
- resin
- preform
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004744 fabric Substances 0.000 claims abstract description 33
- 239000003292 glue Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 abstract description 41
- 239000011347 resin Substances 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000009745 resin transfer moulding Methods 0.000 description 28
- 239000002131 composite material Substances 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention aims to provide an RTM preform with high forming efficiency and an RTM rapid forming die applying the preform. The RTM preform is composed of a sandwich layer and fabric plies disposed on two sides of the sandwich layer. The key lies in that: the preform is provided with a main runner running through the fabric plies and the sandwich layer, and sub-runners communicated with the main runner are disposed between the sandwich layer and the fabric plies. The RTM rapid forming die applying the RTM preform includes: a male mould and a female mould. The RTM preform is placed in a mould cavity formed between the male mould and the female mould. The key lies in that: the male mould is provided with a glue injection runner over against the main runner of the RTM preform. The RTM preform is internally provided with the glue injection runner, thus improving the mould filling efficiency of resin, and promoting the infiltration of resin to fabric. Therefore, the process of filling resin to the mould cavity is accelerated, and the design requirements for the die runners are lowered.
Description
Technical field
The invention belongs to technical field of composite material molding, be specifically related to a kind of RTM(resin transfer moulding, Resin Transfer Moulding) precast body and apply the RTM rapid forming mold of this precast body.
Background technology
Along with the raising that energy-saving and emission-reduction require, the lightweight of automobile is more and more subject to people's attention.In recent years, the application of the application of advanced composite material, especially carbon fibre composite can greatly reduce the tare of automobile.The composite material process planning of auto industry is mainly that liquid forming technology is main at present, and in recent years, composite liquid moulding resin is developed in succession fast.The epoxy-resin systems that Momentive (stepping figure) and Toray (east is beautiful) develop, be only several minutes its hardening time.The successful exploitation of these composite rapid shaping resin systems makes composite RTM rapid shaping become possibility.
The successful development of rapid shaping resin at present greatly reduces accounting for the mould time of product really, yet for large area product, still holding time is more at the mold filling process of mould inside for resin, has hindered the raising of production efficiency.In order to shorten resin mould-filling time, common adoptable way has: 1, by improving resin temperature, reduce resin viscosity, thereby improve resin mobile performance in die cavity, reach the object that shortens mould-filling time, but the applicable time of resin is obviously shortened in the too high meeting of resin heating-up temperature, even also can cause the distortion of product after solidifying; 2, by improving the injection pressure of resin, improve the mobile performance of resin, thereby shorten mould-filling time, but in injection process, hypertonia can cause precast body dislocation, distortion, even fabric distortion; 3, to mould itself, design is modified, and improves the mobile performance of resin by runner design, but the runner design of complexity can increase substantially die cost conventionally, simultaneously for the cleaning of resin flow channel brings certain difficulty.
Summary of the invention
The RTM rapid forming mold that the object of the invention is to propose the RTM precast body that a kind of shaping efficiency is high and apply this precast body.
RTM precast body of the present invention consists of laminboard layer and the fabric laying that is arranged at laminboard layer two sides, key is that described precast body is provided with the sprue that runs through fabric laying and laminboard layer, between described laminboard layer and fabric laying, is provided with the runner communicating with described sprue.
In resin mold filling process, resin is flow in RTM precast body by sprue, and along runner diffusion, thereby infiltrate rapidly fabric laying, accelerated the process of resin filling mould cavity.
Further, described sprue comprises the center main runner that is positioned at precast body center and the auxiliary sprue that is positioned at precast body surrounding.Resin can enter in RTM precast body from center sprue and/or auxiliary sprue, because center main runner, auxiliary sprue are evenly arranged in RTM precast body, therefore can guarantee that the fabric laying of its each position can both be infiltrated rapidly.
Specifically, described laminboard layer is that closed-cell foam is made; Described fabric laying is formed by carbon fibre fabric and/or carbon fiber-glass fiber blend fabric laying.
The RTM rapid forming mold of the above-mentioned RTM precast body of application that the present invention proposes comprises formpiston and former, and described RTM precast body is positioned between formpiston, former in formed mold cavity; Key is that described formpiston is provided with over against the injecting glue runner of the sprue of described RTM precast body.In general, mould self is all provided with resin flow channel, but resin can only infiltrate fabric laying from a side of fabric laying through this resin flow channel, in the present invention, resin can enter in RTM precast body from injecting glue runner, thereby at upper and lower both direction, fabric laying is infiltrated, accelerated the speed infiltrating.
Further, described formpiston and former are embedded with heating pipeline, with heating mould and interior resin thereof, thus the mobility of raising resin.
Further, between described formpiston and former, be provided with sealing device, for sealing the matched moulds gap between former and formpiston, to avoid resin to leak.
In RTM precast body of the present invention, be provided with injecting glue runner, improved the mold filling efficiency of resin, promoted the infiltration of resin to fiber, thereby accelerated the process of resin filling mould cavity, and reduced the designing requirement to mold runner, be highly suitable for large area composite material face structure, as design and the manufacture of the coverings such as automobile top-cap, bonnet, door skin.
Accompanying drawing explanation
Fig. 1 is the structural representation of RTM precast body of the present invention.
Fig. 2 is the structural representation of RTM rapid forming mold of the present invention.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.
Embodiment 1:
As shown in Figure 1, the RTM precast body 10 of the present embodiment consists of laminboard layer 1 and the fabric laying 2 that is arranged at laminboard layer 1 upper and lower two sides, key is that described precast body is provided with the sprue that runs through fabric laying 2 and laminboard layer 1, this sprue comprises the center main runner 3 that is positioned at precast body center and the auxiliary sprue 4 that is positioned at precast body surrounding, is provided with and center main runner 3, the runner 5 of assisting sprue 4 to communicate between described laminboard layer 1 and fabric laying 2.Above-mentioned runner 5 consists of the groove that is arranged at laminboard layer 1 two sides.
Specifically, described laminboard layer 1 is made for closed-cell foam; Described fabric laying 2 is formed by carbon fibre fabric and/or carbon fiber-glass fiber blend fabric laying.
In resin mold filling process, resin can enter in RTM precast body 10 and along runner 5 diffusions from center sprue 3 and/or auxiliary sprue 4, thereby infiltrate rapidly fabric laying 2, accelerated the process of resin filling mould cavity, because center main runner 3, auxiliary sprue 4 are evenly arranged in RTM precast body 10, therefore can guarantee that the fabric laying 2 of its each position can both be infiltrated rapidly.
As shown in Figure 2, the RTM rapid forming mold of the present embodiment comprises formpiston 20 and former 30, and RTM precast body 10 is positioned between formpiston 20, former 30 in formed mold cavity; Key is that described formpiston 20 is provided with over against the injecting glue runner 40 of the center main runner 3 of described RTM precast body 10.In general, mould self is all provided with resin flow channel, but resin can only infiltrate fabric laying 2 from end face or the bottom surface of fabric laying 2 through this resin flow channel, in the present invention, resin can enter in RTM precast body 10 from injecting glue runner 40, and along runner 5 diffusions, thereby at end face and bottom surface both direction, fabric laying 2 is infiltrated simultaneously, accelerated the speed infiltrating.
Between formpiston 20 and former 30, be provided with sealing device 60, for sealing the matched moulds gap between former 30 and formpiston 20.Avoid resin to leak.
Claims (7)
1. a RTM precast body, by laminboard layer and the fabric laying that is arranged at laminboard layer two sides, formed, it is characterized in that described precast body is provided with the sprue that runs through fabric laying and laminboard layer, between described laminboard layer and fabric laying, be provided with the runner communicating with described sprue.
2. RTM precast body according to claim 1, is characterized in that described sprue comprises the center main runner that is positioned at precast body center and the auxiliary sprue that is positioned at precast body surrounding.
3. RTM precast body according to claim 1 and 2, is characterized in that described laminboard layer is that closed-cell foam is made.
4. RTM precast body according to claim 1 and 2, is characterized in that described fabric laying is formed by carbon fibre fabric and/or carbon fiber-glass fiber blend fabric laying.
5. application rights requires a RTM rapid forming mold for RTM precast body described in 1, comprises formpiston and former, and described RTM precast body is positioned between formpiston, former in formed mold cavity; It is characterized in that described formpiston is provided with over against the injecting glue runner of the sprue of described RTM precast body.
6. RTM rapid forming mold according to claim 5, is characterized in that described formpiston and former are embedded with heating pipeline.
7. according to the RTM rapid forming mold described in claim 5 or 6, it is characterized in that being provided with sealing device between described formpiston and former.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693924.XA CN103753829A (en) | 2013-12-18 | 2013-12-18 | RTM preform and RTM rapid forming die applying the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310693924.XA CN103753829A (en) | 2013-12-18 | 2013-12-18 | RTM preform and RTM rapid forming die applying the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103753829A true CN103753829A (en) | 2014-04-30 |
Family
ID=50521223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310693924.XA Pending CN103753829A (en) | 2013-12-18 | 2013-12-18 | RTM preform and RTM rapid forming die applying the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103753829A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139529A (en) * | 2014-06-25 | 2014-11-12 | 中国兵器工业集团第五三研究所 | Sandwiched composite material forming method |
| CN105965918A (en) * | 2016-05-21 | 2016-09-28 | 奇瑞汽车股份有限公司 | Manufacturing process for automobile engine hood assembly of carbon fiber composite |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031046A (en) * | 1987-07-10 | 1989-02-15 | 3D复合材料有限公司 | Method of moulding |
| CN1293731A (en) * | 1999-03-19 | 2001-05-02 | 东丽株式会社 | FRP roof material, method of manufacturing structure and method for connecting the roof material |
| CN1464828A (en) * | 2001-08-07 | 2003-12-31 | 东丽株式会社 | Method for producing upsized frp member |
| US20130280483A1 (en) * | 2011-02-28 | 2013-10-24 | Noriya Hayashi | Rtm molding device, rtm molding method, and semi-molded body |
-
2013
- 2013-12-18 CN CN201310693924.XA patent/CN103753829A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1031046A (en) * | 1987-07-10 | 1989-02-15 | 3D复合材料有限公司 | Method of moulding |
| CN1293731A (en) * | 1999-03-19 | 2001-05-02 | 东丽株式会社 | FRP roof material, method of manufacturing structure and method for connecting the roof material |
| CN1464828A (en) * | 2001-08-07 | 2003-12-31 | 东丽株式会社 | Method for producing upsized frp member |
| US20130280483A1 (en) * | 2011-02-28 | 2013-10-24 | Noriya Hayashi | Rtm molding device, rtm molding method, and semi-molded body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139529A (en) * | 2014-06-25 | 2014-11-12 | 中国兵器工业集团第五三研究所 | Sandwiched composite material forming method |
| CN105965918A (en) * | 2016-05-21 | 2016-09-28 | 奇瑞汽车股份有限公司 | Manufacturing process for automobile engine hood assembly of carbon fiber composite |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103358462B (en) | For manufacturing the compound or method of hybrid structure | |
| CN104227879B (en) | Method for positioning metal embedded part in flexible mold assisted RTM molding | |
| CN104309133A (en) | A preparing method of a composite-material pentahedral rectangular cabin | |
| CN104589670A (en) | Gas channel design method for molding of composite material cavity-structure gas bag | |
| CN104494166A (en) | Air bag forming method of composite material part with T-shaped reinforced web structure | |
| CN105235239B (en) | A kind of moulding process of carbon fiber antenna back frame or antenna support arm | |
| CN110027226A (en) | A kind of P-RTM moulding process being used to prepare enhancing composite material | |
| CN111470068B (en) | Grille cover body structure for aircraft and manufacturing method thereof | |
| CN111196049B (en) | Ablation-resistant/bearing integrated air inlet channel and integral forming method | |
| CN104369392A (en) | Method for manufacturing composite material component | |
| CN109774199B (en) | Forming method of carbon fiber composite rudder-shaped structure | |
| CN103753829A (en) | RTM preform and RTM rapid forming die applying the same | |
| CN104441689A (en) | RTM molding process suitable for fiber composite material | |
| CN203391187U (en) | Device for forming upper rubber layer of rubber diaphragm of automobile brake chamber | |
| CN107696522A (en) | A kind of carbon fibre fabric method for forming parts at band R angles | |
| CN103552212A (en) | Rapid prototyping RTM mold | |
| CN111284038A (en) | Liquid forming method of ribbed composite material part for unmanned aerial vehicle | |
| JP6750735B2 (en) | Composite material molding method and composite material molding apparatus | |
| CN114932692B (en) | Braided structure composite material runner plate integrated RTM forming auxiliary tool and process | |
| CN102303410A (en) | Method for molding core and cavity of corner sealing element | |
| CN202137957U (en) | RTM (resin transfer molding) soft mould | |
| CN104802424A (en) | Method for manufacturing fiber enhancement hollowed section bar | |
| CN108145990A (en) | A kind of hot pressing injection mold and forming method for automotive trim production | |
| JP6357984B2 (en) | Composite material molding method and molding apparatus | |
| CN107415139A (en) | INS method for injection compression molding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140430 |