CN216993141U - Cabin section forming die for small grid rib reinforcing structure made of composite material - Google Patents
Cabin section forming die for small grid rib reinforcing structure made of composite material Download PDFInfo
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- CN216993141U CN216993141U CN202220353077.7U CN202220353077U CN216993141U CN 216993141 U CN216993141 U CN 216993141U CN 202220353077 U CN202220353077 U CN 202220353077U CN 216993141 U CN216993141 U CN 216993141U
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- female die
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- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 title claims description 6
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000003292 glue Substances 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000000047 product Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 6
- 239000004945 silicone rubber Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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Abstract
The utility model discloses a composite material small grid rib reinforced structure cabin section forming die which comprises an upper female die and a lower female die which are arranged oppositely, wherein a metal positioning core die is horizontally arranged between the upper female die and the lower female die, and a plurality of split expansion male dies are arranged outside the metal positioning core die; the metal positioning core mold is of a truncated cone structure, the center of the top and the center of the bottom of the metal positioning core mold are provided with core mold shafts, the split expansion male mold is fixedly bonded on the outer wall of the metal positioning core mold through high-temperature-resistant glue, and grid rib grooves are formed in the split expansion male mold; and the upper female die and the lower female die are provided with cavities corresponding to the split expansion male die in shape, and two ends of each cavity are provided with shaft holes for the core die shafts to penetrate out. The utility model is convenient for demoulding small-size grid rib structure products and can ensure that the appearance size and the wall thickness of the products are uniform.
Description
Technical Field
The utility model belongs to the technical field of composite material product forming dies, and particularly relates to a composite material small grid rib reinforced structure cabin section forming die.
Background
The fiber reinforced composite material has the advantages of high specific strength, high specific modulus, fatigue resistance, corrosion resistance, strong designability, small density, low thermal expansion coefficient, high dimensional stability and the like, and is widely used in the fields of aerospace, aviation, navigation and the like. The composite cabin structure for spaceflight is a universal design method by arranging a grid rib reinforcing structure in order to ensure that a product has certain rigidity and reduce the weight of the product. Compared with the mode of increasing the wall thickness to realize the same rigidity, the design of the annular grid rib reinforcing structure can greatly save the material cost and the labor hour.
Normally, the composite material cabin structure is formed by adopting a metal mold, but when the product size is small and the grid rib structure is limited, the internal male mold cannot be normally demolded at all.
In order to solve the problems in the prior art, a composite material small grid rib reinforced structure cabin section forming die is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cabin section forming die for a small-sized composite material grid rib reinforcing structure, which is convenient to demould, suitable for small-sized products and capable of ensuring the wall thickness and the size of the products.
In order to achieve the purpose, the utility model provides the following technical scheme: a cabin section forming die for a small-sized grid rib reinforced structure made of a composite material comprises an upper female die and a lower female die which are arranged oppositely, a metal positioning core die is horizontally arranged between the upper female die and the lower female die, and a plurality of split expansion male dies are arranged outside the metal positioning core die; the metal positioning core mold is of a truncated cone structure, the center of the top and the center of the bottom of the metal positioning core mold are provided with core mold shafts, the split expansion male mold is fixedly bonded on the outer wall of the metal positioning core mold through high-temperature-resistant glue, and grid rib grooves are formed in the split expansion male mold; and the upper female die and the lower female die are provided with cavities corresponding to the split expansion male die in shape, and two ends of each cavity are provided with shaft holes for the core die shafts to penetrate out.
Preferably, a valve positioning reticle is carved on the metal positioning core mold, and the split expansion male mold determines the bonding position through the valve positioning reticle.
Preferably, four corners of the inner sides of the upper female die and the lower female die are provided with guide holes, and guide blocks are arranged in the guide holes.
Preferably, the material of the valving expansion male die is silicon rubber.
Preferably, the number of the split male expansion dies is 4.
Compared with the prior art, the utility model has the beneficial effects that: the utility model comprises three parts: the outer female die is pressurized through a bolt to ensure the overall dimension of a product and accurately control the appearance of the product; the silicone rubber split male die expands in volume when heated, pressure is applied to the composite material inside the silicone rubber split male die, the interlayer strength of a product is guaranteed, and the compression performance of the silicone rubber is convenient for demoulding of small-size products; the inner metal core mold is used for fixing the silicone rubber split male mold, positioning the central shaft of the product, and positioning the outer female mold through the metal core mold, so that the distance between the metal core mold and the outer female mold is consistent, and the wall thickness of the final product is uniform and consistent.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
in the figure: 1. an upper female die; 2. a lower vaginal membrane; 3. a metal positioning core mold; 4. a split expansion male mold; 5. grid rib grooves; 6. a mandrel shaft; 7. a cavity; 8. a shaft hole; 9. and (4) a guide hole.
Detailed Description
The following describes a preferred embodiment of the present invention with reference to the drawings, and the technical solution in a preferred embodiment of the present invention is clearly and completely described.
Referring to fig. 1, the utility model comprises an upper female die 1 and a lower female die 2 which are oppositely arranged, a metal positioning core die 3 is horizontally arranged between the upper female die 1 and the lower female die 2, a plurality of split expansion male dies 4 are arranged outside the metal positioning core die 3, the split expansion male dies 4 are made of silicon rubber, and the number of the split expansion male dies 4 is 4.
The metal positioning core mold 3 is of a cone frustum structure, a core mold shaft 6 is arranged at the center of the top and the bottom of the metal positioning core mold 3, the split expansion male mold 4 is fixedly bonded on the outer wall of the metal positioning core mold 3 through high-temperature-resistant glue, and grid rib grooves 5 are formed in the split expansion male mold 4. And a valve mold positioning reticle is carved on the metal positioning core mold 3, and the split expansion male mold 4 determines the bonding position through the valve mold positioning reticle.
And the upper female die 1 and the lower female die 2 are provided with a die cavity 7 corresponding to the split expansion male die 4 in shape, and two ends of the die cavity 7 are provided with shaft holes 8 for the core die shaft 6 to penetrate through.
The male die adopts a combination mode, the fixed male die is a metal positioning core die 3, the split expansion male die 4 is a silicon rubber die, the split male die is fixed through the metal fixed male die to prevent the split male die from moving around, and the demolding is carried out through the silicon rubber elasticity of the split male die. The silicon rubber mold is manufactured by a silicon rubber filling process, and the silicon rubber processing mold is made of a nylon material.
In the utility model, the lower female die 2 also plays a role of supporting, and the metal positioning core die 3 is erected on the lower female die 2 through the core die shafts 6 at two ends. The auxiliary material used in the forming process is a thermosetting material, the problems of eccentricity and uneven wall thickness are easily caused after melting, the metal positioning core die 3 is positioned on the outer female die, the distance between the metal positioning core die 3 and the outer female die is ensured to be consistent, and the wall thickness of the final product is ensured to be uniform and consistent.
In this embodiment, guide holes 9 are formed at four corners of the inner sides of the upper female die 1 and the lower female die 2, and guide blocks are installed in the guide holes 9, so that a guiding effect is achieved in the die assembly process of the upper female die and the lower female die.
The working process of the utility model is as follows:
1. integrally assembling the male die, installing the split expansion male die 4 outside the metal positioning core die 3, and cleaning the surface of the die, smearing a release agent and the like after the assembly and fixation are finished;
2. carbon fiber laying is carried out on the split expansion male die 4, ring rib laying is carried out firstly (fiber is required to be filled in the die grid rib groove 5 by using a fiber belt and is not broken continuously), the whole skin is wrapped after the ring rib laying is finished, and the product is hot compacted for many times according to the condition in the laying process. The silicon rubber material split expansion male die 4 expands by heated volume, and applies pressure to the composite material inside to ensure the interlayer strength of the product.
3. After layering is finished, coating auxiliary materials on a product, vacuumizing to be less than or equal to-0.097 MPa, heating and curing in a hot oven at the curing temperature of 180 ℃ for 10-12h, opening the oven door when the temperature of a male die reaches 110 ℃ in the curing process, tightening and pressurizing connecting screws of an upper female die and a lower female die outside the product to match the dies in place, and ensuring the overall dimension of the product.
4. Demoulding of the product: because the formed product has a grid rib structure and is embedded into the groove of the split male die, and the product has small size and cannot be directly and normally demolded, the core die needs to be removed firstly (the metal positioning core die 3 is drawn out by knocking the core die shaft 6), and then the silicon rubber flap die is torn off, and the silicon rubber flap die is positioned on the inner wall of the product.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a small-size net muscle reinforcing structure cabin section forming die of combined material which characterized in that: the split-type expansion die comprises an upper female die (1) and a lower female die (2) which are oppositely arranged, wherein a metal positioning core die (3) is horizontally arranged between the upper female die (1) and the lower female die (2), and a plurality of split-type expansion male dies (4) are arranged outside the metal positioning core die (3);
the metal positioning core mold (3) is of a truncated cone structure, a core mold shaft (6) is arranged at the center of the top and the bottom of the metal positioning core mold (3), the split expansion male mold (4) is fixedly bonded on the outer wall of the metal positioning core mold (3) through high-temperature-resistant glue, and grid rib grooves (5) are formed in the split expansion male mold (4);
and the upper female die (1) and the lower female die (2) are provided with cavities (7) corresponding to the split expansion male die (4) in shape, and two ends of each cavity (7) are provided with shaft holes (8) for the core die shafts (6) to penetrate through.
2. The composite material small-sized grid rib reinforced structure cabin forming die as claimed in claim 1, wherein: and a valve positioning groove is carved on the metal positioning core mold (3), and the split expansion male mold (4) determines the bonding position through the valve positioning groove.
3. The forming die for the cabin section of the composite material small-sized grid rib reinforced structure, according to claim 1, is characterized in that: four corners of the inner sides of the upper female die (1) and the lower female die (2) are provided with guide holes (9), and guide blocks are installed in the guide holes (9).
4. The composite material small-sized grid rib reinforced structure cabin forming die as claimed in claim 1, wherein: the split expansion male die (4) is made of silicon rubber.
5. The forming die for the cabin section of the composite material small-sized grid rib reinforced structure, according to claim 1, is characterized in that: the number of the split expansion male die (4) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220353077.7U CN216993141U (en) | 2022-02-21 | 2022-02-21 | Cabin section forming die for small grid rib reinforcing structure made of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220353077.7U CN216993141U (en) | 2022-02-21 | 2022-02-21 | Cabin section forming die for small grid rib reinforcing structure made of composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216993141U true CN216993141U (en) | 2022-07-19 |
Family
ID=82393991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220353077.7U Active CN216993141U (en) | 2022-02-21 | 2022-02-21 | Cabin section forming die for small grid rib reinforcing structure made of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216993141U (en) |
-
2022
- 2022-02-21 CN CN202220353077.7U patent/CN216993141U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231122 Address after: 300000 No.2 workshop of high power bulldozer, No.18 Yingchun Road, Huaming hi tech Industrial Zone, Dongli District, Tianjin Patentee after: Tianjin aisida New Material Technology Co.,Ltd. Address before: Area B, No.1 Factory building, No.26 Siwei Road, development zone, Dongli District, Tianjin Patentee before: BEIJING AEROSPACE TIANMEI TECHNOLOGY Co.,Ltd. |