CN109228401A - Composite material injection molding technique - Google Patents
Composite material injection molding technique Download PDFInfo
- Publication number
- CN109228401A CN109228401A CN201810973947.9A CN201810973947A CN109228401A CN 109228401 A CN109228401 A CN 109228401A CN 201810973947 A CN201810973947 A CN 201810973947A CN 109228401 A CN109228401 A CN 109228401A
- Authority
- CN
- China
- Prior art keywords
- mold
- injection molding
- composite material
- molding technique
- material injection
- 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.)
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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
- B29C70/30—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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
Abstract
The invention discloses a kind of composite material injection molding technique, specific steps include: fiber placement, and → film bag laying → vacuumizes → injecting glue → and enters tank → Pressurized-heated → release → cooling → demoulding；The mold that the injection molding technique uses, including rigid or semi-rigid first mold and with the second mold of type, first mold includes molded surface and sealing surfaces, second mold is equipped with sealing device, vacuum orifice and gum-injecting port using the flexible membrane bag that can be reused, the flexible membrane bag.Composite material injection molding technique of the present invention, the unformed film in original injection technique is substituted with molding flexible membrane bag, film originally needs scene to cut adhesive seal, it can not be utilized again after use, belong to disposable consumptive material, and molding flexible membrane bag of the invention can reuse, and effectively reduce cost；Mold carries heating device, improves shaping efficiency；It gives certain external pressure and improves injection-molded product quality.
Description
Technical field
The present invention relates to composite molding machine-shaping fields, are injection moulded work more particularly to a kind of composite material
Skill.
Background technique
Composite material process planning is the development foundation and condition of composite material industry.With composite material application field
It widens, composite material industry is rapidly developed, and old moulding process becomes better and approaching perfection day by day, and new forming method continues to bring out.At present
The forming method of polymer matrix composite is more than 20 kinds existing.Conventional process has hand pasting forming, injection molding, resin injection, mould
Molded, vacuum diversion moulding process etc..More technique now is injection technique, injection technique cost input mistake
Height, regular injection technological forming time are long.
Therefore it needs to develop a kind of injection technique, on the one hand can reduce cost, on the other hand can be improved injection efficiency
And product quality.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of composite material injection molding techniques, can reduce cost and mention
High efficiency.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of composite material is provided and is injected into
Type technique, specific steps include: fiber placement → film bag laying → vacuumize → injecting glue → enter tank → Pressurized-heated → release →
Cooling → demoulding；
The mold that the injection molding technique uses, including rigid or semi-rigid first mold and with the second mold of type,
First mold includes molded surface and sealing surfaces, and second mold uses the flexible membrane bag that can be reused,
The flexible membrane bag is equipped with sealing device, vacuum orifice and gum-injecting port.
In a preferred embodiment of the present invention, there is heating device in first mold.
In a preferred embodiment of the present invention, the heating device connects the temperature control device.
In a preferred embodiment of the present invention, the fiber placement → film bag laying → vacuumizes → and injecting glue step is specific
For flexible membrane bag to be put in the surface of fiber and prolonged by fiber placement after the completion of the molded surface of first mold, laying
The sealing surfaces for extending to the first mold are sealed the flexible membrane bag by sealing device, pass through the vacuum orifice
Flexible membrane bag is vacuumized, the gum-injecting port injecting resin is passed through.
In a preferred embodiment of the present invention, it is described enter after the completion of tank → Pressurized-heated step is specially injecting glue, by this
Mold is put into vulcanizing tank, and applies certain pressure, while opening mold heating system heats mold, molding time are can be controlled in
10-15min。
In a preferred embodiment of the present invention, in 2 ~ 7MP, heating temperature is lower than 150 DEG C for the pressure control.
In a preferred embodiment of the present invention, the vacuum orifice is located at close to the position of the sealing surfaces, described
Injection port is located at the position close to the center of molded surface.
In a preferred embodiment of the present invention, close using sealing ring between first mold and the second mold
Envelope.
The beneficial effects of the present invention are: composite material injection molding technique of the present invention has the advantage that
1, the unformed film in original injection technique is substituted with molding flexible membrane bag, film originally needs scene to cut stickup
Sealing can not utilize again after use, belong to disposable consumptive material, and molding flexible membrane bag of the invention can repeat benefit
With effectively reducing cost；
2, mold carries heating device, improves shaping efficiency；
3, it gives certain external pressure and improves injection-molded product quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one preferred embodiment of mold of composite material injection molding technique of the present invention；
The structural schematic diagram of one preferred embodiment of the system of Fig. 2 composite material injection molding technique of the present invention；
The components in the drawings are labeled as follows: 1- mold, the first mold of 11-, 12- flexible membrane bag, 121- sealing ring, 122- take out
Vacuum port, 123- gum-injecting port, 2- pressurized tank, 3- air accumulator, 4 temperature control devices, 5- fiber.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Referring to Fig. 1, the embodiment of the present invention includes:
A kind of mold for composite material injection molding technique, comprising: rigid or semi-rigid first mold 11 and with type
Second mold, first mold 11 include molded surface and sealing surfaces, and the second mold use can repeat benefit
Flexible membrane bag 12, the flexible membrane bag 12 are equipped with sealing device, vacuum orifice 122 and gum-injecting port 123.First mould
There is heating device 113 in specific 11, the heating device 113 connects the temperature control device 4.The vacuum orifice 122, which is located at, to be leaned on
The position of the nearly sealing surfaces, the gum-injecting port 123 are located at the position close to the center of molded surface.First mold
And second sealed using sealing ring 121 between mold.
Referring to Fig.2, the embodiment of the present invention includes:
A kind of system of composite material injection molding technique, comprising: mold 1, pressurized tank 2 and air accumulator 3 shown in FIG. 1, it is described
Air accumulator 2 is connected to pressurized tank 3, and the mold 1 is placed in the pressurized tank 2.
Composite material injection molding technique of the present invention, specific steps, which include: fiber placement, → film bag laying → vacuumizes →
Injecting glue → enter tank → Pressurized-heated → release → cooling → demoulding.
Specially flexible membrane bag is put in by 5 laying of fiber after the completion of the molded surface of first mold, laying
The surface of fiber and the sealing surfaces for extending to the first mold are sealed the flexible membrane bag by sealing device, lead to
It crosses the vacuum orifice to vacuumize flexible membrane bag, passes through the gum-injecting port injecting resin.After the completion of injecting glue, by this mold
It is put into vulcanizing tank, and applies certain pressure, while opening mold heating system heats mold, molding time can be controlled in 10-
15min.In 2 ~ 7MP, heating temperature is lower than 150 DEG C for the pressure control.
Composite material injection molding technique of the present invention has the advantage that
1, the unformed film in original injection technique is substituted with molding flexible membrane bag, film originally needs scene to cut stickup
Sealing can not utilize again after use, belong to disposable consumptive material, and molding flexible membrane bag of the invention can repeat benefit
With effectively reducing cost；
2, mold carries heating device, improves shaping efficiency；
3, it gives certain external pressure and improves injection-molded product quality.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of composite material injection molding technique, which is characterized in that specific steps include: fiber placement → film bag laying → pumping
Vacuum → injecting glue → enters tank → Pressurized-heated → release → cooling → demoulding；
The mold that the injection molding technique uses, including rigid or semi-rigid first mold and with the second mold of type,
First mold includes molded surface and sealing surfaces, and second mold uses the flexible membrane bag that can be reused,
The flexible membrane bag is equipped with sealing device, vacuum orifice and gum-injecting port.
2. composite material injection molding technique according to claim 1, which is characterized in that have in first mold and add
Thermal.
3. composite material injection molding technique according to claim 2, which is characterized in that described in the heating device connection
Temperature control device.
4. composite material injection molding technique according to claim 1, which is characterized in that the fiber placement → film bag paving
Put → vacuumize → injecting glue step is specially by fiber placement in the molded surface of first mold, it will be soft after the completion of laying
Property film bag is put in the surface of fiber and extends to the sealing surfaces of the first mold, by sealing device to the flexible membrane bag into
Row sealing, vacuumizes flexible membrane bag by the vacuum orifice, passes through the gum-injecting port injecting resin.
5. composite material injection molding technique according to claim 1, which is characterized in that it is described enter tank → Pressurized-heated step
It suddenly is specially this mold to be put into vulcanizing tank, and apply certain pressure, while opening mold heating system adds after the completion of injecting glue
Mold heat, molding time can be controlled in 10-15min.
6. composite material injection molding technique according to claim 5, which is characterized in that the pressure is controlled in 2 ~ 7MP,
Heating temperature is lower than 150 DEG C.
7. composite material injection molding technique according to claim 1, which is characterized in that the vacuum orifice is located at close
The position of the sealing surfaces, the injection port are located at the position close to the center of molded surface.
8. composite material injection molding technique according to claim 1, which is characterized in that first mold and second
It is sealed between mold using sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973947.9A CN109228401A (en) | 2018-08-24 | 2018-08-24 | Composite material injection molding technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810973947.9A CN109228401A (en) | 2018-08-24 | 2018-08-24 | Composite material injection molding technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109228401A true CN109228401A (en) | 2019-01-18 |
Family
ID=65068304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810973947.9A Pending CN109228401A (en) | 2018-08-24 | 2018-08-24 | Composite material injection molding technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109228401A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631659A (en) * | 2005-01-07 | 2005-06-29 | 北京玻钢院复合材料有限公司 | Vacuum auxiliary resin penetration process for composite material and mould therefor |
| CN101428476A (en) * | 2008-11-10 | 2009-05-13 | 东华大学 | Method for manufacturing vacuum mould closing of false ogive |
| CN103552259A (en) * | 2013-10-25 | 2014-02-05 | 中国兵器工业集团第五三研究所 | Mold for forming double-walled composite material container through vacuum-assisted resin transfer molding (RTM) process |
-
2018
- 2018-08-24 CN CN201810973947.9A patent/CN109228401A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1631659A (en) * | 2005-01-07 | 2005-06-29 | 北京玻钢院复合材料有限公司 | Vacuum auxiliary resin penetration process for composite material and mould therefor |
| CN101428476A (en) * | 2008-11-10 | 2009-05-13 | 东华大学 | Method for manufacturing vacuum mould closing of false ogive |
| CN103552259A (en) * | 2013-10-25 | 2014-02-05 | 中国兵器工业集团第五三研究所 | Mold for forming double-walled composite material container through vacuum-assisted resin transfer molding (RTM) process |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20190118 |