CN104441699A - Vacuum bag reusing structure - Google Patents
Vacuum bag reusing structure Download PDFInfo
- Publication number
- CN104441699A CN104441699A CN201410851830.5A CN201410851830A CN104441699A CN 104441699 A CN104441699 A CN 104441699A CN 201410851830 A CN201410851830 A CN 201410851830A CN 104441699 A CN104441699 A CN 104441699A
- Authority
- CN
- China
- Prior art keywords
- vacuum bag
- putty
- tack
- reinforcing strip
- bar
- 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
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
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
The invention relates to a vacuum bag reusing structure, and belongs to the field of composite material preparation. The structure comprises a putty strip, a die and a vacuum bag, and further comprises a self-adhesive reinforcing strip. The self-adhesive reinforcing strip is bonded outside the vacuum bag, and the arrangement direction of the self-adhesive reinforcing strip is consistent with the arrangement direction of the putty strip in a matched mode. By means of the structure, the vacuum bag can be reused without affecting sealing, and the self-adhesive reinforcing strip can enhance the strength of the vacuum bag and cannot be twisted and deformed through the vacuum bag, so that the bonding relation between the putty strip and the vacuum bag is affected indirectly; after the vacuum bag is used, the putty strip can be torn off along with the vacuum bag even if the environment is complex, and the technical effect that the self-adhesive reinforcing strip affects the putty strip and the vacuum bag is unexpected; the vacuum bag can be reused, the production cost in the composite material forming process can be saved, the pollution to the environment in the waste and old vacuum bag reusing process can be reduced, and the environment is protected.
Description
Technical field
The invention belongs to composite and manufacture field, be specifically related to the structure that vacuum bag can be made in a kind of composite manufacturing process to reuse.
Background technology
Manufacture in shaping technology field at composite at present, no matter be prepreg forming technique, or wet-forming technique (also claims liquid composite molding technology (being called for short LCM), in the technique such as resin transfer moulding, vacuum assisted resin transfer molding (VARTM), resin infiltration molding process (SCRIMP) in, the use of vacuum bag is essential.Particularly in prepreg moulding process, the utilization rate of vacuum bag is very high, and therefore, the recycling rate of waterused improving vacuum bag is most important.
In real work, vacuum bag utilizes putty bar fixing in a mold, vacuum bag is bonded on putty bar, then form closed space between mould, putty, vacuum bag, workpiece is placed between closed space, making workpiece obtain continual and steady pressure by vacuumizing pressurization, being used for getting rid of the escaping gas produced when the air existed in composite reacts with gummed.And the thorough degree of exhaust, directly affect the surface quality after Workpiece shaping and intensity.
And the resin in prepreg moulding process in prepreg is solid-state form, during laying, gas is between layers difficult to get rid of, and which floor needs often to spread and will make vacuum bag and carry out pre-compacted.And make vacuum bag at every turn and all will use the vacuum film of some and corresponding putty bar.This not only adds the amount of labour, and brings too high, unnecessary production cost.
There is a kind of preparation method of the silica gel under vacuum bag reused can improve the utilization rate of vacuum bag in prior art, but the method cannot ensure all reliably even of pressurization, so range of application is not very extensive when the part that curvature is excessive or complex-shaped makes.And the effect of putty bar is sealing, when curvature is excessive or complex-shaped, use once, take vacuum bag off, vacuum bag can torsional deformation, and coating performance between putty bar is just bad.If increase intensive aspect on putty bar surface, the sealing of putty bar can be affected, if strengthened in putty bar inside, can cost be increased again.
Summary of the invention
When tearing vacuum bag for solving vacuum bag in prior art, due to putty bar and vacuum film insufficient strength, produce gross distortion, the technical problem using, cause production cost higher cannot be continued, the invention provides a kind of vacuum bag recycling structure.
A kind of structure that vacuum bag is reused, comprise putty bar, mould, vacuum bag, putty bar is bonded on mould, again vacuum bag is crimped on putty bar, forms seal cavity between mould, putty bar, vacuum bag, will it is characterized in that: also comprise tack reinforcing strip, described tack reinforcing strip is pasted onto outside vacuum bag, and trend and the putty bar of tack reinforcing strip move towards to mate consistent.
Structure disclosed in this invention can make vacuum bag when not affecting sealing, reuse, tack reinforcing strip no doubt can strengthen the intensity of vacuum bag, and simultaneously, tack reinforcing strip is by making vacuum bag can not torsional deformation, make the influenced of the bonding relation indirect between putty with vacuum bag, after vacuum bag uses, even if circumstance complication, also putty bar can be made together can to take off with vacuum bag, and this technique effect that tack reinforcing strip affects putty and vacuum bag is unexpected.Vacuum bag can reuse the production cost not only can saved in composite material shaping process, can also reduce pollution on the environment in waste and old vacuum bag removal process.Can protection of the environment.
Accompanying drawing explanation
Fig. 1: vacuum bag recycling structure chart;
Fig. 2: vacuum bag and putty relation structure diagram;
In figure, 1. vacuum bag 2. putty bar 3. tack reinforcing strip.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is made an explanation:
A kind of structure that vacuum bag is reused, comprise putty bar 2, mould, vacuum bag 1, putty bar 2 is bonded on mould, again vacuum bag 1 is crimped on putty bar 2, forms seal cavity between mould, putty bar 2, vacuum bag 1, will it is characterized in that: also comprise tack reinforcing strip 3, described tack reinforcing strip 3 is pasted onto outside vacuum bag 1, and urge and the putty bar 2 of tack reinforcing strip 3 move towards to mate consistent.
During use, even if vacuum bag 1 is at complex environment, namely when the part that processing curvature is excessive or complex-shaped, the corresponding curvature of mould is equally comparatively large, and when complex-shaped, the sticking effect between vacuum bag 1 and putty is bad, even can affect vacuum.And the perfection between putty and vacuum bag 1 is fitted now to use tack reinforcing strip 3 to ensure, realize the object vacuumized.
Degree is fitted tightly when the reinforcing strip of tack can ensure vacuum bag 1 distortion between putty and vacuum bag 1, when vacuum bag 1 is finished using, when needing vacuum bag 1 and putty to take off from mould, vacuum bag 1 is stressed yielding, and distortion directly affects life-span and the service property (quality) next time of vacuum bag 1.Tack reinforcing strip 3 for this reason in the present invention selects fabric bar.After selecting fabric bar, the fiber of fabric bar has good tensile resistance because of its structure, and the fabric bar of tack is attached to outside vacuum bag 1, when taking vacuum bag 1 off, the most easily stretch stressed place by the fabric bar of tack attachment reinforcement, then vacuum bag 1 is not fragile.Realize the recycling of vacuum bag 1.
When using vacuum bag 1, the putty width bonding with vacuum bag 1 is about between 10 ~ 20mm, for this reason, tack fabric is cut into the fabric bar of 10 ~ 30mm mm wide
Tack fabric is pasted onto outside vacuum bag 1, is clipped in the middle by vacuum bag 1 together with putty.
When the distance of tack fabric transverse side distance putty central shaft is identical, the effect of pasting reinforcement is best.
When the distance of tack fabric transverse side distance putty central shaft is 3 ~ 5mm, cost performance is the highest, both ensure that the intensity of vacuum bag 1, has saved tack fabric web material simultaneously.
Protection scope of the present invention is not limited only to the technical scheme disclosed in detailed description of the invention part, and all tack reinforcing strip that utilizes make the reusable technical scheme of vacuum bag all fall into protection scope of the present invention.
Claims (6)
1. the structure that vacuum bag can be made to reuse, comprise putty bar (2), mould, vacuum bag (1), putty bar (2) is bonded on mould, again vacuum bag (1) is crimped on putty bar (2), mould, putty bar (2), vacuum bag form seal cavity between (1), to it is characterized in that: also comprise tack reinforcing strip (3), described tack reinforcing strip (3) is pasted onto vacuum bag (1) outward, and urge and the putty bar (2) of tack reinforcing strip (3) move towards to mate consistent.
2. a kind of structure that vacuum bag is reused according to claim 1, is characterized in that: tack reinforcing strip (3) selects fabric bar.
3. a kind of structure that vacuum bag is reused according to claim 2, it is characterized in that: when using vacuum bag (1), the putty width bonding with vacuum bag (1) is about between 10 ~ 20mm, tack fabric is cut into the fabric bar of 10 ~ 30mm mm wide.
4. a kind of structure that vacuum bag is reused according to claim 3, is characterized in that: tack fabric is pasted onto vacuum bag (1) outside, is clipped in the middle by vacuum bag (1) together with putty.
5. a kind of structure that vacuum bag is reused according to claim 4, is characterized in that: the distance of tack fabric transverse side distance putty central shaft is identical.
6. a kind of structure that vacuum bag is reused according to claim 5, is characterized in that: the distance of tack fabric transverse side distance putty central shaft is 3 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851830.5A CN104441699A (en) | 2014-12-31 | 2014-12-31 | Vacuum bag reusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851830.5A CN104441699A (en) | 2014-12-31 | 2014-12-31 | Vacuum bag reusing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104441699A true CN104441699A (en) | 2015-03-25 |
Family
ID=52888811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410851830.5A Pending CN104441699A (en) | 2014-12-31 | 2014-12-31 | Vacuum bag reusing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104441699A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110884762A (en) * | 2019-10-21 | 2020-03-17 | 成都鲁晨新材料科技有限公司 | Reusable vacuum bag |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4878979A (en) * | 1986-04-25 | 1989-11-07 | United Technologies Corporation | Method of reusably sealing a silicone rubber vacuum bag to a mold for composite manufacture |
| CN2770930Y (en) * | 2005-02-02 | 2006-04-12 | 黄新华 | Acryl barometric film shaping apparatus |
| CN102712142A (en) * | 2009-12-18 | 2012-10-03 | 波音公司 | Double vacuum cure processing of composite parts |
| CN102951371A (en) * | 2011-08-26 | 2013-03-06 | 波音公司 | Integrally stiffened, reusable vacuum bag and method of making the same |
| CN204398340U (en) * | 2014-12-31 | 2015-06-17 | 江苏中陆航星航空工业有限公司 | A kind of structure that vacuum bag is reused |
-
2014
- 2014-12-31 CN CN201410851830.5A patent/CN104441699A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4878979A (en) * | 1986-04-25 | 1989-11-07 | United Technologies Corporation | Method of reusably sealing a silicone rubber vacuum bag to a mold for composite manufacture |
| CN2770930Y (en) * | 2005-02-02 | 2006-04-12 | 黄新华 | Acryl barometric film shaping apparatus |
| CN102712142A (en) * | 2009-12-18 | 2012-10-03 | 波音公司 | Double vacuum cure processing of composite parts |
| CN102951371A (en) * | 2011-08-26 | 2013-03-06 | 波音公司 | Integrally stiffened, reusable vacuum bag and method of making the same |
| CN204398340U (en) * | 2014-12-31 | 2015-06-17 | 江苏中陆航星航空工业有限公司 | A kind of structure that vacuum bag is reused |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110884762A (en) * | 2019-10-21 | 2020-03-17 | 成都鲁晨新材料科技有限公司 | Reusable vacuum bag |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |