CN110901107B - Blank transfer method based on involution mold - Google Patents
Blank transfer method based on involution mold Download PDFInfo
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- CN110901107B CN110901107B CN201911162981.9A CN201911162981A CN110901107B CN 110901107 B CN110901107 B CN 110901107B CN 201911162981 A CN201911162981 A CN 201911162981A CN 110901107 B CN110901107 B CN 110901107B
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- Prior art keywords
- vacuum bag
- blank
- forming die
- bag film
- mold
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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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C31/00—Handling, e.g. feeding of the material to be shaped, storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots
- B29C31/008—Handling preformed parts, e.g. inserts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Robotics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a blank transfer device and a transfer method based on a involution mold, and the device consists of an upper forming mold, a lower forming mold and 2 layers of vacuum bag films. The device has simple structure, and can realize the quick, accurate and reliable transfer of the blank between the involutive molds through the conversion of the actual action of the 2-layer vacuum bag film. The problems of folding, ply slippage and the like of the blank in the transfer process are avoided, and the product quality is improved.
Description
Technical Field
The invention relates to the field of composite material part manufacturing, in particular to a blank transfer method based on a involution mold.
Background
The composite material has the advantages of high bearing efficiency, strong designability and the like, and is widely applied to the fields of aviation, aerospace, sports goods and the like.
The composite material part is generally paved and pasted by using a forming die, a vacuum bag is manufactured, and the composite material part is cured and formed. For most parts, the paving mould and the forming mould can be fused into a set. However, for parts with complicated changes in part curvature or sharp bends in the shape, the parts need to be manufactured by using matched molds. Namely, the prepreg is paved in a mould structure mode which is beneficial to paving. And after the paving and pasting are finished, transferring the blank to a mold which is favorable for curing to cure so as to ensure the internal and surface quality of the part. The general technique is that after the paving and pasting are finished, the blank which is vacuumized and compacted is manually stripped from a paving and pasting mould, transferred to a curing mould, positioned and compacted, and then cured. By the method, problems of ply folding, ply position slippage and the like of the blank can be caused in the process of stripping the blank from the laying die. Particularly, when the size of the part is large, problems are easy to occur in the processes of peeling and manual transfer of the blank, and the product quality is affected. Moreover, even after long-time vacuum pumping and compaction, the blank is still relatively soft, which is not beneficial to setting a positioning device and influences the positioning accuracy of the transferred blank.
Therefore, a blank transfer device and a transfer method based on a combined mold are needed, so that the blank, especially a large-size blank, can be peeled and transferred, and the problems of prepreg folding, ply slippage and the like in the process are avoided, so that the product quality is influenced.
Disclosure of Invention
The invention discloses a blank transfer method based on a involution mold, which can realize the quick, accurate and reliable transfer of blanks. The problems of ply folding, layering, slippage and the like in the process are avoided, and the product quality is ensured.
The utility model provides a stock transfer device based on closing mould, includes forming die, lower forming die, 2 layers of vacuum bag membrane, goes up forming die and lower forming die and respectively is provided with the round recess along part periphery, and the distance between recess and the part stock of lower forming die is greater than the distance between recess and the stock of last forming die, and 2 layers of vacuum bag membrane are located the surface of upper and lower forming die and the surface of stock respectively. The coverage area of the vacuum bag film on the outer surface of the blank is larger than that of the vacuum bag film on the surface of the forming mold. The vacuum bag film on the surface of the forming die is pleated along the periphery of the inner side of the groove of the upper forming die and the lower forming die.
A blank transfer method based on a involution mold comprises the following steps:
1, placing a sealing rubber strip in a groove of a lower forming die, laying a vacuum bag film, manufacturing a vacuum bag, pleating the vacuum bag film around the inner side of the groove of the lower forming die, and vacuumizing and compacting;
2, paving and pasting the prepreg layer by taking the lower forming die as a paving and pasting die;
3, laying a vacuum bag film on the surface of the part blank to manufacture a vacuum bag, and ensuring that the coverage area of the vacuum bag film on the surface of the blank is larger than that of the vacuum bag film on the surface of the lower forming die;
4, vacuumizing and compacting;
5, placing a sealing rubber strip in the groove of the upper forming die;
6, the upper forming die and the lower forming die are closed;
7 cutting the vacuum bag film on the outer surface of the blank along the edge area of the vacuum bag film on the outer surface of the blank of the lower forming die;
8, pressing the cut vacuum bag film on a sealing rubber strip of the groove of the upper forming die, pleating the periphery of the inner side of the groove of the upper forming die, and cutting off the redundant vacuum bag film;
9, vacuumizing and compacting;
10 cutting the vacuum bag film on the surface of the lower forming die along the groove of the lower forming die;
11, pressing the cut vacuum bag film on an upper forming die by using a sealing rubber strip to ensure that the vacuum bag film coverage area on the blank surface is larger than that of the vacuum bag film on the upper forming die surface;
12, vacuumizing and compacting;
and 13, keeping the vacuumizing compaction state, and separating the upper forming die together with the blank from the lower forming die.
The blank transfer device and the transfer method based on the involution mold have the following advantages that: 1) the structure is simple, the use is convenient, and the blank can be quickly, accurately and reliably transferred; 2) the transfer of the blank between the involution moulds is realized through the conversion of the actual action of the 2-layer vacuum bag film, and the problems of ply folding, layering, slippage and the like which are easy to occur in the manual transfer process are avoided; 3) by positioning the involutory dies, the blank is accurately positioned during transfer, and the positioning precision of the blank is improved.
Drawings
FIG. 1 schematic view of a transfer device
FIG. 2A cross-sectional view of a transfer device
The numbering in the figures illustrates: 1-lower forming die, 2-upper forming die, 3-lower forming die groove, 4-upper forming die groove and 5-blank.
Detailed Description
The invention takes a C-shaped beam as an example, and discloses a blank transfer device based on a folding mold, which comprises an upper forming mold 1, a lower forming mold 2 and 2 layers of vacuum bag films, wherein a circle of groove is respectively arranged on the upper forming mold 1 and the lower forming mold 2 along the periphery of a part, the distance between a groove 3 of the lower forming mold and the blank of the part is larger than the distance between a groove 4 of the upper forming mold and a blank 5, and the 2 layers of vacuum bag films are respectively positioned on the surfaces of the upper forming mold and the lower forming mold and the outer surface of the blank 5. The covering area of the vacuum bag film on the outer surface of the blank 5 is larger than that of the vacuum bag film on the surfaces of the upper forming die and the lower forming die. The vacuum bag film on the surface of the forming die is pleated along the periphery of the inner side of the groove of the upper forming die and the lower forming die.
A blank transfer method based on a involution mold comprises the following steps:
1, placing a sealing rubber strip in a groove 3 of a lower forming die, laying a vacuum bag film, manufacturing a vacuum bag, pleating the vacuum bag film around the inner side of the groove of the lower forming die, vacuumizing and compacting;
2, paving and pasting the prepreg layer by taking the lower forming die 1 as a paving and pasting die;
3, laying a vacuum bag film on the surface of the blank 5, manufacturing a vacuum bag, and ensuring that the coverage area of the vacuum bag film on the surface of the blank 5 is larger than that of the vacuum bag film on the surface of the lower forming die 1;
4, vacuumizing and compacting;
5 placing a sealing rubber strip in the groove 4 of the upper forming die;
6, matching the upper forming die 2 with the lower forming die 1;
7 cutting the vacuum bag film on the outer surface of the blank along the edge area of the vacuum bag film on the outer surface of the blank 5 of the lower forming die;
8, pressing the cut vacuum bag film on a sealing rubber strip of the groove 4 of the upper forming die, pleating the periphery of the inner side of the groove of the upper forming die, and cutting off the redundant vacuum bag film;
9, vacuumizing and compacting;
10 cutting a vacuum bag film on the surface of the lower forming die along the groove of the lower forming die 1;
11, pressing the cut vacuum bag film on the upper forming die 2 by using a sealing rubber strip to ensure that the vacuum bag film coverage area on the surface of the blank 5 is larger than that of the vacuum bag film on the surface of the upper forming die 2;
12, vacuumizing and compacting;
13 keeping the vacuum compaction state, separating the upper forming die 2 together with the blank 5 from the lower forming die 1.
Claims (1)
1. A blank transfer method based on a involution mold is characterized by comprising a transfer device, wherein the transfer device comprises an upper forming mold, a lower forming mold and 2 layers of vacuum bag films, the transfer device is characterized in that the upper forming mold and the lower forming mold are respectively provided with a circle of groove along the periphery of a part, the distance between the groove of the lower forming mold and the blank of the part is larger than the distance between the groove of the upper forming mold and the blank, the 2 layers of vacuum bag films are respectively positioned on the surfaces of the upper forming mold and the lower forming mold and the outer surface of the blank, the coverage area of the vacuum bag film on the outer surface of the blank is larger than that of the vacuum bag film on the surface of the forming mold, the vacuum bag films on the surface of the forming mold are pleated along the inner sides of the grooves of the upper forming mold and the lower forming mold:
1-1, placing a sealing rubber strip in a groove of a lower forming die, laying a vacuum bag film, manufacturing a vacuum bag, pleating the vacuum bag film around the inner side of the groove of the lower forming die, vacuumizing and compacting;
1-2, paving and pasting the prepreg layer by taking the lower forming die as a paving and pasting die;
1-3, laying a vacuum bag film on the surface of the part blank, manufacturing a vacuum bag, and ensuring that the coverage area of the vacuum bag film on the surface of the blank is larger than that of the vacuum bag film on the surface of the lower forming die;
1-4, vacuumizing and compacting;
1-5, placing a sealing rubber strip in a groove of an upper forming die;
1-6, matching an upper forming die with a lower forming die;
1-7 cutting the vacuum bag film on the outer surface of the blank along the edge area of the vacuum bag film on the outer surface of the blank of the lower forming die;
1-8, pressing the cut vacuum bag film on a sealing rubber strip of a groove of an upper forming die, pleating the periphery of the inner side of the groove of the upper forming die, and cutting off redundant vacuum bag film;
1-9, vacuumizing and compacting;
1-10 cutting a vacuum bag film on the surface of the lower forming die along the groove of the lower forming die;
1-11, pressing the cut vacuum bag film on an upper forming die by using a sealing rubber strip to ensure that the vacuum bag film coverage area on the blank surface is larger than that on the upper forming die surface;
1-12, vacuumizing and compacting;
1-13 keeping the vacuumizing compaction state, and separating the upper forming die together with the blank from the lower forming die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162981.9A CN110901107B (en) | 2019-11-22 | 2019-11-22 | Blank transfer method based on involution mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162981.9A CN110901107B (en) | 2019-11-22 | 2019-11-22 | Blank transfer method based on involution mold |
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| CN110901107A CN110901107A (en) | 2020-03-24 |
| CN110901107B true CN110901107B (en) | 2021-07-16 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112208120B (en) * | 2020-09-02 | 2022-08-05 | 江西昌河航空工业有限公司 | Preform transfer and composite material part layering and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20020145218A1 (en) * | 2001-04-06 | 2002-10-10 | Caldwell Design And Fabrication, L.L.C. | Mandrel-assisted resin transfer molding process employing resin outflow perimeter channel between male and female mold elements |
| US8444792B2 (en) * | 2009-02-26 | 2013-05-21 | Tecsis Tecnologia E Sistemas Avançados Ltda | Method of manufacturing aerogenerator blades |
| DE102011078951C5 (en) * | 2011-07-11 | 2017-09-07 | Senvion Gmbh | Method for producing a rotor blade for a wind energy plant |
| CN103448259A (en) * | 2013-09-18 | 2013-12-18 | 沈阳飞机工业（集团）有限公司 | Automatic belt paving machine blank folding tool convenient to transfer and folding method |
| CN110077011A (en) * | 2019-05-28 | 2019-08-02 | 天津中天腾世科技有限公司 | A kind of transferable prepreg shell mould tire, mold system and its application method |
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Inventor after: Yan Enwei Inventor after: Wu Zhipeng Inventor after: He Yuwen Inventor after: Wang Zhan Inventor before: Yan Enwei Inventor before: Wu Zhipeng Inventor before: He Yuwen Inventor before: Wang Zhan |
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