CN116330703A - Composite cone forming device with double vacuum bags for vacuumizing and forming method thereof - Google Patents
Composite cone forming device with double vacuum bags for vacuumizing and forming method thereof Download PDFInfo
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- CN116330703A CN116330703A CN202310320069.1A CN202310320069A CN116330703A CN 116330703 A CN116330703 A CN 116330703A CN 202310320069 A CN202310320069 A CN 202310320069A CN 116330703 A CN116330703 A CN 116330703A
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- Prior art keywords
- vacuum
- product
- bottom plate
- degree
- vacuumizing
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/544—Details of vacuum bags, e.g. materials or shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3076—Aircrafts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3097—Cosmonautical vehicles; Rockets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a composite material cone forming device with double vacuum bags for vacuumizing and a forming method thereof, and belongs to the technical field of composite material cone forming processes. Solves the problems of high cost of autoclave molding process and complex process, namely high manufacturing cost of the composite cone. The invention adopts flexible pressurization, can better enable the fluidity of the resin in the reinforced fiber, double-layer flexible pressurization can repeatedly pressurize the same position, and can improve the fluidity of the resin and simultaneously enable bubbles in the resin to be removed from the product, so that the bubbles in the product are reduced, and the internal quality of the product is increased. The invention has simple operation, cost saving and high product internal quality, ensures that the product quality can reach the product quality of the autoclave, and solves the problems of high process cost of the existing autoclave and poor product quality of non-autoclave processes.
Description
Technical Field
The invention belongs to the technical field of composite material cone forming processes, and particularly relates to a composite material cone forming device with double vacuum bags for vacuumizing and a forming method thereof.
Background
The resin-based composite material is increasingly widely applied in the fields of aerospace and the like, and the composite material cone structure has the advantages of good overall formability, high bearing efficiency, less number of connecting pieces and the like, and is increasingly widely applied.
But the autoclave forming process has higher cost and complex process, and the manufacturing cost of the composite cone is higher.
Disclosure of Invention
In view of the above, the present invention provides a composite cone forming device with dual vacuum bags for vacuumizing and a forming method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme: a composite cone molding method with double vacuum bags for vacuumizing specifically comprises the following steps:
(1) A conical male die is arranged on the bottom plate, and a plurality of vacuum nozzles for vacuumizing are arranged on the bottom plate through holes;
(2) A release agent is sprayed on the bottom surface of the male die;
(3) Laying a product on a male die, wherein the prepreg is made of epoxy resin, the single-layer thickness is 0.1mm, the total thickness is 2mm, and the laying angles are 0 degree, 90 degree, 45 degree, 0 degree, 90 degree, 45 degree, 90 degree and 90 degree;
(4) Wrapping a separation film outside the product;
(5) Installing an inner vacuum bag, wrapping the empty spaces of a plurality of vacuum nozzles of the bottom plate inside, and vacuumizing;
(6) Installing an outer vacuum bag, installing a third vacuum nozzle on the outer vacuum bag, and vacuumizing;
(7) A plurality of vacuum nozzles on the bottom plate are connected with different gas tanks;
(8) Heating to 100 ℃, and vacuumizing;
(9) The product at the same position is subjected to different pressures of the two vacuum bags, so that the resin can flow better;
(10) Curing: heating at 120 ℃ for 6 hours, then heating at 180 ℃ for 6 hours, and finally heating at 290 ℃ for three hours.
The utility model provides a forming device that combined material cone shaping method of two vacuum bag evacuation was used, includes a plurality of vacuum mouths, vacuum mouth, positive mould, interior vacuum bag, outer vacuum bag, bottom plate and vacuum tube, placed the positive mould on the bottom plate, place the product on the positive mould, the periphery of product has covered interior vacuum bag and outer vacuum bag in proper order, the both sides of bottom plate are provided with a plurality of vacuum mouths, the one end and the interior vacuum bag intercommunication of vacuum mouth, the other end and the vacuum tube intercommunication of vacuum mouth, the one end and the outer vacuum bag intercommunication of vacuum mouth, the other end and the vacuum tube intercommunication.
And further, the vacuum nozzles comprise a third vacuum nozzle and a second vacuum nozzle, and the third vacuum nozzle and the second vacuum nozzle are respectively arranged on two sides of the bottom plate.
Compared with the prior art, the composite material cone forming device with double vacuum bags for vacuumizing and the forming method thereof have the beneficial effects that:
(1) The invention adopts flexible pressurization, can better enable the fluidity of the resin in the reinforced fiber, double-layer flexible pressurization can repeatedly pressurize the same position, and can improve the fluidity of the resin and simultaneously enable bubbles in the resin to be removed from the product, so that the bubbles in the product are reduced, and the internal quality of the product is increased.
(2) The invention has simple operation, cost saving and high product internal quality, ensures that the product quality can reach the product quality of the autoclave, and solves the problems of high process cost of the existing autoclave and poor product quality of non-autoclave processes.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a dual vacuum bag vacuumized composite cone forming device according to the present invention;
in the figure: 1-vacuum nozzle, 2-product, 3-male mold, 4-inner vacuum bag, 5-outer vacuum bag, 6-bottom plate, 7-third vacuum nozzle, 8-vacuum tube and 9-second vacuum nozzle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that, in the case of no conflict, embodiments of the present invention and features of the embodiments may be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.
1. In a first embodiment, referring to fig. 1, a method for forming a composite cone by vacuumizing a double vacuum bag is described, which specifically includes the following steps:
(1) A conical male die 3 is arranged on a bottom plate 6, and a plurality of vacuum nozzles for vacuumizing are arranged on the bottom plate 6 through holes;
(2) A release agent is sprayed on the bottom surface of the male die 3;
(3) The product 2 is laid on the male die 3, the prepreg is made of epoxy resin, the single-layer thickness is 0.1mm, the total thickness is 2mm, the laying angles are 0 degree, 90 degree, 45 degree, 0 degree, 90 degree, 45 degree and 90 degree;
(4) The product 2 is covered with a isolating film;
(5) Installing an inner vacuum bag 4, wrapping the empty spaces of a plurality of vacuum nozzles of a bottom plate 6 inside, and vacuumizing;
(6) An outer vacuum bag 5 is arranged, a third vacuum nozzle 1 is arranged on the outer vacuum bag, and then vacuum is pumped;
(7) A plurality of vacuum nozzles on the bottom plate 6 are connected with different gas tanks;
(8) All the structures are heated from room temperature to 100 ℃ and vacuumized at the same time;
(9) The product at the same position is subjected to different pressures of the two vacuum bags, so that the resin can flow better;
(10) Curing: heating at 120 ℃ for 6 hours, then heating at 180 ℃ for 6 hours, and finally heating at 290 ℃ for three hours.
The utility model provides a composite cone forming device of two vacuum bag evacuation, includes a plurality of vacuum mouths, vacuum mouth 1, positive mould 3, interior vacuum bag 4, outer vacuum bag 5, bottom plate 6 and vacuum tube 8, placed positive mould 3 on the bottom plate 6, place product 2 on the positive mould 3, the periphery of product is covered with interior vacuum bag 4 and outer vacuum bag 5 in proper order, the both sides of bottom plate 6 are provided with a plurality of vacuum mouths, the one end and interior vacuum bag 4 intercommunication of vacuum mouth, the other end and vacuum tube 8 intercommunication, the one end and the outer vacuum bag 5 intercommunication of vacuum mouth 1, the other end and vacuum tube 8 intercommunication.
The vacuum nozzles comprise a third vacuum nozzle 7 and a second vacuum nozzle 9, and the third vacuum nozzle 7 and the second vacuum nozzle 9 are respectively arranged on two sides of the bottom plate 6.
The embodiments of the invention disclosed above are intended only to help illustrate the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention.
Claims (4)
1. A composite cone molding method with double vacuum bags for vacuumizing is characterized in that: the method specifically comprises the following steps:
(1) A male die (3) is arranged on the bottom plate (6), and a plurality of vacuum nozzles for vacuumizing are arranged on the holes on the bottom plate (6);
(2) A release agent is sprayed on the bottom surface of the male die (3);
(3) The product (2) is laid on the male die (3), the prepreg is made of epoxy resin, the single-layer thickness is 0.1mm, the total thickness is 2mm, the laying angles are 0 degree, 90 degree, 45 degree, 0 degree, 90 degree, 45 degree, 90 degree and 90 degree;
(4) The product (2) is externally covered with a separation film;
(5) Installing an inner vacuum bag (4), wrapping the empty spaces of a plurality of vacuum nozzles of a bottom plate (6) inside, and vacuumizing;
(6) An outer vacuum bag (5) is arranged, a first vacuum nozzle (1) is arranged on the outer vacuum bag, and then vacuum is pumped;
(7) A plurality of vacuum nozzles on the bottom plate (6) are connected with different gas tanks;
(8) Heating from room temperature to 100deg.C, and vacuumizing;
(9) The product at the same position is subjected to different pressures of the two vacuum bags, so that the resin can flow better;
(10) Curing: heating at 120 ℃ for 6 hours, then heating at 180 ℃ for 6 hours, and finally heating at 290 ℃ for three hours.
2. A molding apparatus for use in a dual vacuum bag vacuumized composite cone molding method according to claim 1, wherein: including a plurality of vacuum mouths, vacuum mouth (1), positive mould (3), interior vacuum bag (4), outer vacuum bag (5), bottom plate (6) and vacuum tube (8), placed positive mould (3) on bottom plate (6), place product (2) on positive mould (3), the periphery of product is covered with interior vacuum bag (4) and outer vacuum bag (5) in proper order, the both sides of bottom plate (6) are provided with a plurality of vacuum mouths, the one end and interior vacuum bag (4) of vacuum mouth communicate, the other end and vacuum tube (8) communicate, the one end and outer vacuum bag (5) of vacuum mouth (1) communicate, the other end and vacuum tube (8) communicate.
3. The dual vacuum bag evacuated composite cone forming device according to claim 2, wherein: the plurality of vacuum nozzles comprise a third vacuum nozzle (7) and a second vacuum nozzle (9), and the third vacuum nozzle (7) and the second vacuum nozzle (9) are respectively arranged on two sides of the bottom plate (6).
4. A dual vacuum bag evacuated composite cone forming device according to claim 2 or 3, wherein: the male die (3) is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310320069.1A CN116330703A (en) | 2023-03-29 | 2023-03-29 | Composite cone forming device with double vacuum bags for vacuumizing and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310320069.1A CN116330703A (en) | 2023-03-29 | 2023-03-29 | Composite cone forming device with double vacuum bags for vacuumizing and forming method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116330703A true CN116330703A (en) | 2023-06-27 |
Family
ID=86876990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310320069.1A Pending CN116330703A (en) | 2023-03-29 | 2023-03-29 | Composite cone forming device with double vacuum bags for vacuumizing and forming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116330703A (en) |
-
2023
- 2023-03-29 CN CN202310320069.1A patent/CN116330703A/en active Pending
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