CN215791888U - 3 RTM forming die of lamella formula expansion compression fabric - Google Patents
3 RTM forming die of lamella formula expansion compression fabric Download PDFInfo
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- CN215791888U CN215791888U CN202121954610.7U CN202121954610U CN215791888U CN 215791888 U CN215791888 U CN 215791888U CN 202121954610 U CN202121954610 U CN 202121954610U CN 215791888 U CN215791888 U CN 215791888U
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Abstract
The utility model relates to a RTM (resin transfer molding) mold for 3-segment expansion, belonging to the technical field of composite material preparation molds. The RTM forming die is composed of a male die, a female die, a split mold insert and a cover plate, wherein the male die is provided with the female die, the split mold insert is arranged in the middle of the female die, and the cover plate is arranged above the split mold insert. The mold insert of the RTM forming mold is a split mold insert, and has the characteristic of convenience in installation, in work, pressure can be applied in multiple directions through the split mold insert, so that the bottom surface and two side surfaces of the fiber fabric groove A are simultaneously extruded, the fiber fabric is prevented from being wrinkled, uneven and even cut off, and the problem that after the existing structural part is formed, the surface of the existing structural part is easily wrinkled, uneven and even cut off, and the forming quality and the use performance of the surface of a composite material are affected is solved.
Description
Technical Field
The utility model relates to a RTM (resin transfer molding) mold for 3-segment expansion, belonging to the technical field of composite material preparation molds.
Background
In the fields of aviation, aerospace, automobiles and the like, the preparation of structural members by using composite materials becomes an important approach and development trend for light weight of equipment, wherein fiber-reinforced resin composite materials account for a considerable proportion. At present, there is a mold product made of a fiber-reinforced resin composite material, in which a groove a is provided in the middle, grooves B are provided on both sides of the groove a, and the groove a and the groove B are arranged in a staggered manner. In the forming process, the groove B needs to be sleeved on the forming cavity firstly, the fiber fabric is filled in the groove B, the space of the groove A is compressed to be reduced, the insert in the groove of the traditional die is of an integral structure, in the forming process of a structural member, pressure can be applied to the vertical direction of the bottom surface of the groove A only, the spaces of the fiber fabrics on the two side surfaces of the groove A can be smaller than the size of the insert in the groove A, and therefore the surface of the fiber fabric is easily wrinkled, uneven and even cut off, and the forming quality and the use performance of the surface of the composite material are directly influenced. In order to avoid the defect of the fiber fabric and facilitate the installation of the insert. Therefore, there is a need for improvement thereof.
Disclosure of Invention
The utility model aims to: the RTM forming die for the 3-segment expansion compressed fiber fabric can facilitate the installation of the insert and can apply pressure in multiple directions in the forming process so as to solve the problems that after the existing structural part is formed, wrinkles and unevenness are easy to occur on the surface, and even the existing structural part is cut off.
The technical scheme of the utility model is as follows:
the utility model provides a 3 RTM forming die of lamella formula expand compression fabric, it comprises formpiston, bed die, split mold insert and apron, its characterized in that: a female die is arranged on the male die, a split mold insert is arranged in the middle of the female die, and a cover plate is arranged above the split mold insert.
A forming table is arranged in the middle of the male die, groove forming plates are symmetrically arranged on the forming table, and forming shoulders are arranged on the outer sides of the groove forming plates and the forming tables at the two end heads of the groove forming plates; and male die limiting grooves are formed in the male dies on the two sides of the forming table.
The groove forming plates are uniformly distributed on the forming table between the two adjacent groove forming plates, ejection block assembling grooves are formed in the forming table, ejection blocks are inserted into the ejection block assembling grooves, and the upper surfaces of the ejection blocks are flush with ports of the ejection block assembling grooves.
The female dies A and B are formed, female dies B are respectively arranged at the end heads of the two ends of the female dies A which are arranged in parallel, and the female dies B are connected with the end surfaces of the female dies A in a sealing manner through fixing bolts; the lower ends of the female dies A and B are respectively abutted and hermetically connected with the side surface of the forming table.
A female die limiting block is arranged on the bottom end face of the female die A corresponding to the male die limiting groove in a shape, and the female die limiting block is connected with the male die limiting groove in an inserted manner; and a female die limiting groove is formed in the top end face of the female die A.
A cover plate limiting block is arranged on the cover plate corresponding to the female die limiting groove in a shape, the cover plate limiting block is connected with the female die limiting groove in an inserting mode, and an insert limiting groove is formed in the middle of the cover plate; vertical assembly bolts are uniformly inserted at the edge of the cover plate, the vertical assembly bolts at two sides of the cover plate sequentially penetrate through the cover plate, the female die A and the male die to enable the female die A to be respectively in sealing connection with the male die, and the vertical assembly bolts at two ends of the cover plate sequentially penetrate through the cover plate, the female die B and the male die to enable the female die B to be respectively in sealing connection with the male die.
The split insert is composed of inserts A, B and C, wherein an insert B is arranged on one side of the insert A, an insert C is arranged on the other side of the insert A, and the insert A is respectively connected with the insert B, C in a sliding manner; the end surfaces of the two ends of the insert A, B, C are flush with each other, and the inserts B and C are connected with the female dies A and B in a sliding and sealing mode.
The side surfaces of the inserts B and C on one side of the insert A are respectively in a slope shape, and exhaust holes are respectively formed in the inserts B and C; the cross section of the insert A is in an inverted isosceles trapezoid shape.
The insert A is characterized in that an insert limiting block is arranged on the top end face of the insert A and is connected with an insert limiting groove in an inserted mode.
The middle part of the bottom end surface of the insert A, B, C is respectively provided with a molding groove, and the groove molding grooves of the inserts B and C are arranged at intervals with the top end surface of the molding plate; and forming bosses are respectively arranged on the forming grooves of the insert B, C on one side of the insert A, the lower surfaces of the forming bosses are flush with the forming grooves of the insert A, and the forming bosses are respectively arranged at intervals with the upper surfaces of the forming tables between the groove forming plates and the groove forming plates.
The utility model has the beneficial effects that:
this 3 lamella formula expands and compresses fabric's RTM forming die's mold insert is the split mold insert, has the characteristics of easy to assemble, in operation, through the split mold insert, can multi-directionally exert pressure to extrude the bottom surface and the both sides face of fabric recess A simultaneously, and then avoided fabric fold, unevenness to appear, the condition that cuts off even takes place, solved present structure shaping back, the easy fold, the unevenness that appears in the surface, even cut off, influence combined material surface shaping quality and performance problems.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded schematic view of the present invention;
FIG. 3 is a schematic view of the construction of the male mold of the present invention;
FIG. 4 is a schematic structural view of a female mold A of the present invention;
FIG. 5 is a schematic view of the cover plate of the present invention;
FIG. 6 is a schematic view of the split insert of the present invention;
FIG. 7 is a schematic view of the assembly of the female mold of the present invention;
fig. 8 is a schematic assembly view of the split insert of the present invention.
In the figure: 1. the mold insert comprises a male mold, 2, a cover plate, 3, a molding table, 4, a groove molding plate, 5, an ejection block assembling groove, 6, a molding shoulder, 7, a male mold limiting groove, 8, an ejection block, 9, a female mold A, 10, a female mold B, 11, a female mold limiting block, 12, a female mold limiting groove, 13, a cover plate limiting block, 14, an insert limiting groove, 15, a vertical assembling bolt, 16, an insert A, 17, an insert B, 18, an insert C, 19, an insert limiting block, 20, a molding groove, 21, a molding boss, 22, a horizontal assembling bolt, 23 and an exhaust hole.
Detailed Description
The 3-segment expanded compressed fiber fabric RTM forming mold is composed of a male mold 1, a female mold, a split mold insert and a cover plate 2, wherein the female mold is arranged on the male mold 1, the split mold insert is arranged in the middle of the female mold, and the cover plate 2 is arranged above the split mold insert.
A forming table 3 is arranged in the middle of the male die 1, groove forming plates 4 are symmetrically arranged on the forming table 3, and the groove forming plates 4 are used for shaping grooves B of a die product through the appearance of the groove forming plates 4; ejecting block assembling grooves 5 are uniformly distributed on the forming table 3 between the groove forming plates 4, ejecting blocks 8 are inserted in the ejecting block assembling grooves 5, the upper surfaces of the ejecting blocks 8 are flush with the ports of the ejecting block assembling grooves 5, the ejecting blocks 8 are used for ejecting the die products through the ejecting blocks 8 in the demolding process, so that the die products are convenient to demold, and the ejecting blocks 8 are flush with the ports of the ejecting block assembling grooves 5, so that the shapes of the die products are not easily influenced in the molding process; the ejection block 8 is fixedly connected with the male die 1 through a fixing bolt during assembly, the fixing bolt is inserted into the ejection block assembling groove 5 from the bottom of the male die 1, the fixing bolt inserted into the ejection block assembling groove 5 is in threaded connection with the ejection block 8, and therefore the ejection block 8 is fixed in the ejection block assembling groove 5 of the male die 1; forming shoulders 6 are arranged on the outer side of the groove forming plate 4 and the forming tables 3 at the two end heads of the groove forming plate 4; male die limiting grooves 7 are arranged on the male dies 1 on two sides of the forming table 3.
The female die is composed of female dies A9 and B10, female dies B10 are respectively arranged at the two end heads of the female dies A9 arranged in parallel, and the female dies B10 are connected with the end face of the female die A9 in a sealing mode through fixing bolts; the lower ends of female dies A9 and B10 are respectively abutted against and hermetically connected with the side surface of a forming table 3, wherein a female die A9 is hermetically connected with the forming table 3 through a horizontal assembly bolt 22, and the horizontal assembly bolt 22 sequentially penetrates through a female die A9 on the left side of the forming table 3, the forming table 3 and a female die A9 on the right side of the forming table 3 to enable a female die A9 to be hermetically connected with the forming table 3; under the action of the forming shoulder 6, a gap with the width equal to that of the forming shoulder 6 is formed between each of the female dies A9 and B10 and the groove forming plate 4, and the side wall of the groove B is shaped under the combined action of the female dies A9 and B10 and the groove forming plate 4; a female die limiting block 11 is arranged on the bottom end face of the female die A9 and corresponds to the male die limiting groove 7, the female die limiting block 11 is connected with the male die limiting groove 7 in an inserting mode, the female die limiting block 11 is used for limiting the position of the female die A9 through matching with the male die limiting groove 7, therefore, the assembly of the female die A9 is facilitated, meanwhile, the position of the female die B10 is fixed through fixing the position of the female die A9, the side walls of the end heads at the two ends of the groove B are kept consistent all the time in the generation process, and the quality of finished products is guaranteed; a female die limiting groove 12 is formed in the top end face of the female die A9, a cover plate limiting block 13 is arranged on the cover plate 2 in a shape corresponding to the female die limiting groove 12, the cover plate limiting block 13 is connected with the female die limiting groove 12 in an inserting mode, and the cover plate limiting block 13 is used for being matched with the female die limiting groove 12 to limit and fixing the position of the cover plate 2 so as to facilitate assembly of the cover plate 2; the middle part of the cover plate 2 is provided with an insert limiting groove 14; vertical assembly bolts 15 are uniformly inserted at the edge of the cover plate 2, the vertical assembly bolts 15 at two sides of the cover plate 2 sequentially penetrate through the cover plate 2, the female die A9 and the male die 1 to enable the female die A9 to be respectively connected with the cover plate 2 and the male die 1 in a sealing mode, and the vertical assembly bolts 15 at two ends of the cover plate 2 sequentially penetrate through the cover plate 2, the female die B10 and the male die 1 to enable the female die B10 to be respectively connected with the cover plate 2 and the male die 1 in a sealing mode.
The split insert consists of inserts A16, B17 and C18, wherein one side of the insert A16 is provided with an insert B17, the other side of the insert A16 is provided with an insert C18, and the insert A16 is respectively connected with the inserts B17 and C18 in a sliding manner; the end surfaces of the two ends of the inserts A16, B17 and C18 are respectively flush with each other, and the inserts B17 and C18 are respectively connected with the female dies A9 and B10 in a sliding and sealing mode; the side surfaces of the inserts B17 and C18 on one side of the insert A16 are respectively in a slope shape, the cross section of the insert A16 is in a reverse isosceles trapezoid shape, and the purpose is that when the insert A16 is inserted between the inserts B17 and C18, the inserts B17 and C18 can be gradually extruded towards two sides, so that the inserts B17 and C18 can be integrally translated towards the outside, the fiber fabric is uniformly stressed, the stress of the fiber fabric is in the horizontal direction, the whole plane is simultaneously extruded, the fiber fabric is difficult to wrinkle in the fiber fabric shaping process of the inserts, and the quality of finished products can be effectively guaranteed; exhaust holes 23 are respectively arranged on the inserts B17 and C18, so that air between the inserts B17 and C18 and the female die A9 is exhausted in the processes of the inserts B17 and C18, and bubbles are prevented from being formed on the surface of the molded product; an insert limiting block 19 is arranged on the top end face of the insert A16, the insert limiting block 19 is connected with the insert limiting groove 14 in a plug-in mode, so that when the cover plate 2 extrudes the insert A16, the position of the insert A16 can be limited through the cooperation of the insert limiting block 19 and the insert limiting groove 14, and further the insert A16 is prevented from being deviated when being inserted between the inserts B17 and C18; the middle parts of the bottom end surfaces of the inserts A16, B17 and C18 are respectively provided with a forming groove 20, the forming grooves 20 of the inserts B17 and C18 are arranged at intervals with the top end surface of the groove forming plate 4, so that the bottom end surface of the groove B is shaped through the clearance between the groove forming plate 4 and the inserts B17 and C18 respectively; the forming grooves 20 of the inserts B17 and C18 on the side of the insert A16 are respectively provided with a forming boss 21, the lower surface of the forming boss 21 is flush with the forming groove 20 of the insert A16, the forming bosses 21 are respectively arranged at intervals with the upper surface of the forming table 3 between the groove forming plates 4 and the groove forming plates 4, and the forming bosses 21 are used for matching the forming table 3 and the groove forming plates 4 to shape the groove A in the process of manufacturing a die product.
When a RTM (resin transfer molding) mold product of the 3-segment expansion compression fiber fabric is formed, the ejection blocks 8 are respectively inserted into the ejection block assembling grooves 5, and the ejection blocks 8 are fixed on the male mold 1 through fixing bolts after the ejection blocks 8 are respectively inserted; after the ejection block 8 is fixed, laying the fiber fabric soaked with resin on the forming table 3 and the groove forming plate 4, and after the fiber fabric is laid, fixing the female die A9 on the male die 1 through the horizontal assembly bolt 22; after the female die A9 is fixed, the female die B10 is fixed on the female die A9 through a fixing bolt; after the female die B10 is fixed, the horizontal assembling bolts 22 and the fixing bolts on the female die B10 are sequentially tightened to enable the female dies A9 and B10 to be respectively sealed with the side wall of the forming table 3; after female molds a9 and B10 have been sealed against forming table 3, inserts B17 and C18 are inserted between the assembly cavities formed by female molds a9 and B10, respectively; insert a16 was inserted between inserts B17 and C18 after inserts B17 and C18 were inserted into place; after the insert A16 is inserted, the cover plate 2 is covered, and the insert limiting block 19 of the insert A16 is inserted into the insert limiting groove 14 on the cover plate 2; after the cover plate 2 is in place, the vertical assembly bolt 15 sequentially penetrates through the cover plate 2, the female die and the male die 1, the vertical assembly bolt 15 is gradually tightened, the vertical assembly bolt 15 drives the cover plate 2 to gradually move towards the female die, the cover plate 2 extrudes the insert A16 in the process that the cover plate 2 gradually moves towards the female die, the insert A16 is gradually and completely inserted between the inserts B17 and C18, and then the die product is shaped through the split insert, the female die and the male die 1.
After the die product is formed, when demoulding is carried out, the vertical assembling bolt 15 is firstly removed, and the cover plate 2 is taken down after the vertical assembling bolt is removed; after the cover plate 2 is removed, the fixing bolt on the female die B10 is detached, and the female die B10 is taken down; after the female die B10 is taken down, the horizontal assembly bolt 22 is removed, and the female die A9 is taken down; after the female die A9 is removed, the inserts B17 and C18 are respectively removed from the die product; after the inserts B17 and C18 are removed, the insert A16 is removed; taking down the insert A16, and detaching the fixing bolt on the ejection block 8; after the fixing bolt on the ejection block 8 is detached, the fixing bolt is inserted into the bolt hole below the ejection block 8 through a steel chisel, the ejection block 8 is pushed to move upwards, the ejection block 8 pushes the die product to fall off from the groove forming plate 4, the complete die product can be obtained, and demolding is completed.
This 3 lamella formula expands and compresses fabric's RTM forming die's mold insert is the split mold insert, has the characteristics of easy to assemble, in operation, through the split mold insert, can multi-directionally exert pressure to extrude the bottom surface and the both sides face of fabric recess A simultaneously, and then avoided fabric fold, unevenness to appear, the condition that cuts off even takes place, solved present structure shaping back, the easy fold, the unevenness that appears in the surface, even cut off, influence combined material surface shaping quality and performance problems.
Claims (10)
1. The utility model provides a 3 RTM forming die of lamella formula expand compression fabric, it comprises formpiston (1), bed die, split mold insert and apron 2, its characterized in that: a female die is arranged on the male die (1), a split mold insert is arranged in the middle of the female die, and a cover plate (2) is arranged above the split mold insert.
2. A 3-lobe, expanding and compressing RTM molding apparatus for fibrous web material in accordance with claim 1, wherein: a forming table (3) is arranged in the middle of the male die (1), groove forming plates (4) are symmetrically arranged on the forming table (3), and forming shoulders (6) are arranged on the outer sides of the groove forming plates (4) and the forming tables (3) at the two end heads of the groove forming plates (4); male die limiting grooves (7) are arranged on the male dies (1) on the two sides of the forming table (3).
3. A 3-lobe, expanding and compressing RTM molding apparatus for fibrous web material in accordance with claim 2, wherein: the groove forming plate is characterized in that ejection block assembling grooves (5) are uniformly distributed on the forming table (3) between the groove forming plates (4), ejection blocks (8) are inserted into the ejection block assembling grooves (5), and the upper surfaces of the ejection blocks (8) are flush with ports of the ejection block assembling grooves (5).
4. A 3-lobe, expanding and compressing RTM molding apparatus for fibrous web material in accordance with claim 1, wherein: the female dies A (9) and B (10) are formed, the two end heads of the female dies A (9) arranged in parallel are respectively provided with a female die B (10), and the female dies B (10) are in sealing connection with the end faces of the female dies A (9) through fixing bolts; the lower ends of the female dies A (9) and B (10) are respectively abutted and hermetically connected with the side surface of the forming table (3).
5. A3-lobe, expanding and compressing RTM molding die for fiber fabrics according to claim 4, wherein: a female die limiting block (11) is arranged on the bottom end face of the female die A (9) and corresponds to the male die limiting groove (7), and the female die limiting block (11) is connected with the male die limiting groove (7) in an inserting manner; the top end surface of the female die A (9) is provided with a female die limiting groove (12).
6. A 3-lobe, expanding and compressing RTM molding apparatus for fibrous web material in accordance with claim 1, wherein: a cover plate limiting block (13) is arranged on the cover plate (2) corresponding to the female die limiting groove (12), the cover plate limiting block (13) is connected with the female die limiting groove (12) in a plug-in mode, and an insert limiting groove (14) is arranged in the middle of the cover plate (2); perpendicular assembly bolts (15) are uniformly inserted at the edge of the cover plate (2), the perpendicular assembly bolts (15) at two sides of the cover plate (2) sequentially penetrate through the cover plate (2), the female die A (9) and the male die (1) to enable the female die A (9) to be respectively connected with the cover plate (2) and the male die (1) in a sealing mode, and the perpendicular assembly bolts (15) at two ends of the cover plate (2) sequentially penetrate through the cover plate (2), the female die B (10) and the male die (1) to enable the female die B (10) to be respectively connected with the cover plate (2) and the male die (1) in a sealing mode.
7. A 3-lobe, expanding and compressing RTM molding apparatus for fibrous web material in accordance with claim 1, wherein: the split insert is composed of inserts A (16), B (17) and C (18), wherein an insert B (17) is arranged on one side of the insert A (16), an insert C (18) is arranged on the other side of the insert A (16), and the insert A (16) is respectively connected with the inserts B (17) and C (18) in a sliding manner; the end faces of the two ends of the inserts A (16), B (17) and C (18) are flush with each other respectively, and the inserts B (17) and C (18) are connected with the female dies A (9) and B (10) in a sliding and sealing mode respectively.
8. A 3-lobe, expanding and compressing fabric RTM molding apparatus as claimed in claim 7, wherein: the side surfaces of the inserts B (17) and C (18) on one side of the insert A (16) are respectively in a slope shape, and exhaust holes (23) are respectively arranged on the inserts B (17) and C (18); the cross section of the insert A (16) is in a reverse isosceles trapezoid shape.
9. A 3-lobe, expanding and compressing fabric RTM molding apparatus as claimed in claim 7, wherein: the insert limiting block (19) is arranged on the top end face of the insert A (16), and the insert limiting block (19) is connected with the insert limiting groove (14) in a plug-in mode.
10. A 3-lobe, expanding and compressing fabric RTM molding apparatus as claimed in claim 7, wherein: the middle parts of the bottom end surfaces of the inserts A (16), B (17) and C (18) are respectively provided with a forming groove (20), and the forming grooves (20) of the inserts B (17) and C (18) and the top end surface of the groove forming plate (4) are arranged at intervals; forming bosses (21) are respectively arranged on the forming grooves (20) of the inserts B (17) and C (18) on one side of the insert A (16), the lower surfaces of the forming bosses (21) are flush with the forming grooves (20) of the insert A (16), and the forming bosses (21) are respectively arranged at intervals with the upper surface of the forming table (3) between the groove forming plates (4) and the groove forming plates (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121954610.7U CN215791888U (en) | 2021-08-19 | 2021-08-19 | 3 RTM forming die of lamella formula expansion compression fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121954610.7U CN215791888U (en) | 2021-08-19 | 2021-08-19 | 3 RTM forming die of lamella formula expansion compression fabric |
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| CN215791888U true CN215791888U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121954610.7U Active CN215791888U (en) | 2021-08-19 | 2021-08-19 | 3 RTM forming die of lamella formula expansion compression fabric |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091786A (en) * | 2022-06-23 | 2022-09-23 | 航天特种材料及工艺技术研究所 | Forming method and forming die for conical-cylinder-shaped fiber reinforced composite material |
| CN115107201A (en) * | 2022-07-01 | 2022-09-27 | 北京玻钢院复合材料有限公司 | Aviation composite material window frame cushion block die and window frame cushion block forming method |
-
2021
- 2021-08-19 CN CN202121954610.7U patent/CN215791888U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115091786A (en) * | 2022-06-23 | 2022-09-23 | 航天特种材料及工艺技术研究所 | Forming method and forming die for conical-cylinder-shaped fiber reinforced composite material |
| CN115091786B (en) * | 2022-06-23 | 2023-04-11 | 航天特种材料及工艺技术研究所 | Forming method and forming die for conical-cylinder-shaped fiber reinforced composite material |
| CN115107201A (en) * | 2022-07-01 | 2022-09-27 | 北京玻钢院复合材料有限公司 | Aviation composite material window frame cushion block die and window frame cushion block forming method |
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