CN217729734U - Large-thickness carbon fiber composite material joint forming die - Google Patents
Large-thickness carbon fiber composite material joint forming die Download PDFInfo
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- CN217729734U CN217729734U CN202221002358.4U CN202221002358U CN217729734U CN 217729734 U CN217729734 U CN 217729734U CN 202221002358 U CN202221002358 U CN 202221002358U CN 217729734 U CN217729734 U CN 217729734U
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Abstract
The utility model discloses a large-thickness carbon fiber composite material joint forming die, which comprises a cylindrical positioning sleeve, a circular bottom plate, a supporting die with a section of inner conical surface and an annular cover as an upper die; the bottom of the positioning sleeve is provided with a flange plate extending outwards from the cylinder body; the inner diameter of the circular ring is matched with the outer diameter of the cylinder body of the positioning sleeve, the circular ring-shaped bottom plate is sleeved at the lower part of the positioning sleeve cylinder, and the bottom of the bottom plate is connected with the flange plate; the supporting die is sleeved outside the positioning sleeve, and the lower part of the supporting die is connected with the annular bottom plate; the inner side end of the annular cover is sleeved at the upper part of the positioning sleeve body, and the outer side end of the annular cover is fixedly connected with the supporting die through a connecting piece; and a layer laying cavity for forming the large-thickness carbon fiber composite material joint is defined by the lower side of the annular cover, the outer side of the cylinder body of the positioning sleeve, the upper side of the annular bottom plate and the inner side of the supporting mold.
Description
Technical Field
The utility model relates to a mould production technical field especially relates to a large-thickness carbon-fibre composite connects forming die.
Background
The solid rocket engine is widely applied to missile weapons, carrier rockets and space vehicles, and mainly comprises a shell, a solid propellant, a spray pipe assembly and an ignition device. Wherein the front and rear joints of the housing play an important role in the overall system in the critical force-bearing and external attachment of the rocket motor housing. The traditional solid rocket engine shell joint is usually made of metal materials such as aviation aluminum alloy, titanium alloy, high-strength structural steel and the like, the total mass of the front metal joint and the rear metal joint accounts for 10-15% of the proportion of the shell, and the weight of the similar metal joints can be reduced by 30-50% under the condition of ensuring the same bearing force by applying the carbon fiber composite material joint.
With the increasing trend of the solid rocket engine shell towards upsizing, the sizes and thicknesses of all parts of the solid rocket engine shell are increased, the weight reduction advantage of the carbon fiber composite material joint is more obvious, and the application requirements of the large-thickness carbon fiber composite material joint with the thickness exceeding 50mm are increased. However, for the large-thickness carbon fiber composite material joint, at present, no corresponding mould can be integrally molded, cured and formed, and the problem that the carbon fiber composite material product is difficult to strip after being cured and formed exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art's the aforesaid not enough, provide one kind and can solve the large thickness carbon-fibre composite and connect drawing of patterns difficulty, can improve production efficiency and shaping quality's large thickness carbon-fibre composite connects forming die.
The technical problem to be solved can be implemented by the following technical scheme.
The utility model provides a large-thickness carbon-fibre composite connects forming die which characterized in that includes:
the positioning device comprises a cylindrical positioning sleeve (3), wherein a flange plate (31) extending outwards from the cylinder body is arranged at the bottom of the positioning sleeve (3); and
the inner diameter of a circular ring of the circular ring bottom plate (2) is matched with the outer diameter of the cylinder body of the positioning sleeve (3), the circular ring bottom plate (2) is sleeved at the lower part of the cylinder body of the positioning sleeve (3), and the bottom of the bottom plate is connected with the flange plate (31); and
a supporting die (1) with a section of inner conical surface, wherein the supporting die (1) is sleeved outside the positioning sleeve (3), and the lower part of the supporting die (1) is connected with the circular bottom plate (2); and
the annular cover (4) is used as an upper die, the inner side end of the annular cover (4) is sleeved at the upper part of the barrel body of the positioning sleeve (3), and the outer side end of the annular cover (4) is fixedly connected with the supporting die (1) through a connecting piece;
and a layer laying cavity for forming the large-thickness carbon fiber composite material joint is defined by the lower side of the annular cover (4), the outer side of the cylinder body of the positioning sleeve (3), the upper side of the annular bottom plate (2) and the inner side of the supporting mold (1).
Furthermore, the outer side surface of the cylinder body of the positioning sleeve (3) is provided with a draft angle. For example, the positioning sleeve (3) is provided with a 1-degree drawing angle, so that the product is separated from the positioning sleeve conveniently during demoulding.
As a further improvement of the technical scheme, an isolation coating is sprayed on the molding surface of the laying layer cavity. The isolating coating is preferably a Teflon coating, but not limited to Teflon, so that the product can be conveniently demoulded without pre-coating a demoulding agent, and the formed product and a mould can be conveniently separated, thereby improving the production efficiency.
As the preferred form of the utility model, the circular ring-shaped bottom plate (2) and the flange plate (31) are detachably connected into a whole; the supporting die (1) and the circular bottom plate (2) are detachably connected into a whole.
Also as the preferred form of the utility model, the upper end surface of the supporting die (1) is provided with a glue overflow groove; and continuous glue overflow grooves are formed in the cylinder wall and the upper end surface of the cylinder body of the positioning sleeve (3). Excess resin can overflow through the overflow groove during the compression molding process.
Preferably, the inner side end of the cylinder body of the positioning sleeve (3) is provided with a reinforcing rib.
As a further improvement of the technical scheme, the supporting die (1) further comprises a section of cylindrical surface (17), the cylindrical surface is located at the lower end of the inner conical surface and is naturally continuous with the inner conical surface, and the cylindrical surface and the inner conical surface form a part of a cavity surface of the layer cavity forming surface.
As one of the preferred embodiments of the utility model, the supporting die (1), the circular ring-shaped bottom plate (2), the positioning sleeve (3) and/or the annular cover (4) are/is provided with threaded holes for installing hoisting screws and/or jackscrew demoulding screws. When in hoisting, the hoisting ring screw is screwed in, so that the carrying is convenient; when the demolding is disassembled, the hexagonal head screwed-in screw can be used for ejecting threads and demolding, and all the parts are separated from the product.
The forming die adopting the technical scheme is used for forming the large-thickness carbon fiber composite material joint, but not only is limited to forming the large-thickness carbon fiber composite material joint, but also comprises the large-thickness glass fiber composite material joint.
The utility model discloses a theory of operation is: the female die is fixedly connected with the bottom plate by adopting an inner hexagonal cylindrical head bolt, the bottom plate is fixedly connected with the positioning sleeve by adopting an inner hexagonal cylindrical head bolt, a large-thickness carbon fiber composite material connector laying layer cavity is formed, and Teflon is sprayed on the surface of the laying layer cavity; laying carbon fiber prepreg in the laying layer cavity for product laying; after the laying is finished, the upper die is positioned through the positioning sleeve and matched with the female die; after die assembly, hoisting the whole set of die to the working table of a press, and curing and molding in a heating and pressurizing mode by the press; when demoulding and disassembling are carried out after molding, the hexagonal head screw is screwed in to be used for ejecting threads and demoulding, and an upper die, a positioning sleeve, a bottom plate, a female die (a supporting die) and a product are sequentially separated.
The utility model has the advantages that: the preparation process of the integral compression molding of the large-thickness carbon fiber composite connector is realized, the blank of the integral compression molding curing forming die of the large-thickness carbon fiber composite connector is filled, and the problem that the large-thickness carbon fiber composite connector is difficult to demold is solved; the Teflon is sprayed on the molding surface, so that the process step of repeatedly coating the release agent is avoided, and the production efficiency and the molding quality of the large-thickness carbon fiber composite material joint are improved.
The utility model has the advantages that: the split type connection is adopted, the structure is simple, the operation is convenient, and the installation and the disassembly are convenient; the female die and the positioning sleeve are provided with glue overflow grooves, and redundant resin can overflow through the glue overflow grooves in the die pressing and curing process; each part is provided with a hoisting threaded hole, and hoisting and transferring are convenient.
Drawings
FIG. 1 is a sectional view of the whole structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure of the female mold of the present invention;
FIG. 4 is a schematic view of the bottom plate structure of the present invention;
FIG. 5 is a schematic view of the positioning sleeve of the present invention;
fig. 6 is a schematic view of the upper mold structure of the present invention.
The labels in the figures are: 1. a female die; 11. an inner conical surface; 12. a transition surface; 13. a glue overflow groove; 14. a cavity; 15. a support plate; 16. a top surface; 17. a columnar surface;
2. a base plate;
3. a positioning sleeve; 31. a flange plate; 32. a barrel; 33. reinforcing ribs; 34. a glue overflow groove; 311. connecting holes;
4. and (4) an upper die.
Detailed Description
The following will further describe in detail the embodiment of the large-thickness carbon fiber composite material joint forming mold of the present invention with reference to the accompanying drawings, and further describe in detail the design and use process of the present invention by way of example.
The embodiment is a large-thickness carbon fiber composite material joint forming die, and is shown in fig. 1 to 6, and the large-thickness carbon fiber composite material joint forming die is composed of an outer female die 1 serving as a supporting die, a bottom plate 2 at the bottom, an inner positioning sleeve 3 and an upper die 4 serving as a cover plate, wherein the female die 1 and the bottom plate 2 are fixedly connected through an inner hexagonal cylinder head bolt, the bottom plate 2 and the positioning sleeve 3 are fixedly connected through an inner hexagonal cylinder head bolt, and the upper die 4 is fixedly installed through the positioning sleeve 3 and matched with the female die 1. The split type connection installation is adopted, the structure is simple, the operation is convenient, and the assembly and the disassembly are convenient.
In the use, after female die 1, bottom plate 2 and position sleeve 3 link to each other, form and spread the layer die cavity, spread the layer die cavity face and all have sprayed teflon, lay carbon fiber prepreg at the die cavity face, adopt vacuum bag evacuation mode to carry out the pre-compaction, lay the back of accomplishing, will go up mould 4 and fix a position the installation through position sleeve 3, with the die 1 compound die, with the handling of whole mould to press table surface again, pressurize and heat the solidification.
Referring to fig. 1 and 3, the female die 1 is used as a supporting die, and the forming surface of the female die comprises a section of inner conical surface 11, a transition surface 12 is arranged between the inner conical surface 11 and the top surface 16, and a section of cylindrical forming surface (namely a cylindrical surface 17 in the figure) is arranged at the lower part of the inner conical surface 11. The transition surface 12 and the top surface 16 are provided with a plurality of continuous glue overflowing grooves 13. The supporting die is supported by a plurality of supporting plates 15 (which can also be regarded as reinforcing ribs), a cavity 14 which is convenient for reducing the weight of a part is formed between the supporting plates 15, and simultaneously the bearing and the pressure of the forming surface (mainly referring to the inner conical surface 11) on the inner side are ensured to meet the requirements.
Referring to fig. 1 and 5, the positioning sleeve 3 includes a cylinder 32 having a certain draft angle, for example, a draft angle of 1 ° is provided, so that the formed product can be separated from the positioning sleeve; the bottom of barrel 32 is equipped with the ring flange 31 of outside extension, is provided with connecting hole 311 on the ring flange 31, is convenient for connect the bottom plate 2 of bottom through the connecting piece, and wherein, bottom plate 2 can cup joint on barrel 32, and both detachable connect as an organic whole. The inner end of the cylinder 32 is provided with a plurality of reinforcing ribs 33 to cope with the damage of the cylinder 32 under a large pressure. The upper part of the outer wall of the cylinder 32 is connected with the top end of the cylinder, and a plurality of glue overflowing grooves 34 are arranged on the top end face of the cylinder.
The female die 1 and the positioning sleeve 3 are provided with glue overflow grooves on the upper end surface, and excess resin can flow out through the glue overflow grooves in the carbon fiber prepreg curing process in the heating and pressurizing curing process.
In addition, the female die 1, the bottom plate 2, the positioning sleeve 3 and the upper die 4 are all provided with threaded holes. The hoisting ring screw is screwed in, so that the hoisting and the transferring are convenient; when demoulding, the hexagonal head screw is screwed in, so that the upper die, the positioning sleeve, the bottom plate, the female die and the product can be sequentially separated.
The bottom plate 2 and the upper die 4 are both of annular structures, wherein the forming surface of the upper die 4 can be set into an arc surface according to the structural requirement of a formed workpiece. The female die is sleeved outside the positioning sleeve 3, and the upper part and the lower part are connected in a sealing way through the upper die 4 and the bottom plate 2 to form a layer laying cavity together. The composite material joint inner ring produced accordingly has a thickness > 50mm (i.e. the thickness of the cavity-forming part > 50mm, the so-called high thickness condition of the application).
The utility model has the advantages of convenient installation, low cost, simple disassembly, convenient product demoulding and the like,
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as within the protection scope of the present invention.
Claims (10)
1. The utility model provides a large-thickness carbon-fibre composite connects forming die which characterized in that includes:
the positioning sleeve (3) is cylindrical, and a flange (31) extending outwards from the cylinder is arranged at the bottom of the positioning sleeve (3); and
the inner diameter of a circular ring of the circular ring bottom plate (2) is matched with the outer diameter of the cylinder body of the positioning sleeve (3), the circular ring bottom plate (2) is sleeved at the lower part of the cylinder body of the positioning sleeve (3), and the bottom of the bottom plate is connected with the flange plate (31); and
a supporting die (1) with a section of inner conical surface (11), wherein the supporting die (1) is sleeved outside the positioning sleeve (3), and the lower part of the supporting die (1) is connected with the circular bottom plate (2); and
the annular cover (4) is used as an upper die, the inner side end of the annular cover (4) is sleeved at the upper part of the barrel body of the positioning sleeve (3), and the outer side end of the annular cover (4) is fixedly connected with the supporting die (1) through a connecting piece;
and a layer laying cavity for forming the large-thickness carbon fiber composite material joint is defined by the lower side of the annular cover (4), the outer side of the cylinder body of the positioning sleeve (3), the upper side of the annular bottom plate (2) and the inner side of the supporting mold (1).
2. The large-thickness carbon fiber composite joint forming die as claimed in claim 1, wherein a draft angle is arranged on the outer side surface of the cylinder body of the positioning sleeve (3).
3. A mould for forming a large-thickness carbon fiber composite joint according to claim 1 or 2, wherein the locating sleeve (3) is provided with a draft angle of 1 °.
4. The large-thickness carbon fiber composite joint forming die as claimed in claim 1, wherein the forming surface of the laying layer cavity is provided with an isolation coating.
5. The large-thickness carbon fiber composite joint forming die as claimed in claim 4, wherein the isolation coating is a Teflon coating.
6. The large-thickness carbon fiber composite connector forming die as claimed in claim 1, wherein the annular bottom plate (2) is detachably connected with the flange plate (31) into a whole; the supporting die (1) and the circular bottom plate (2) are detachably connected into a whole.
7. The large-thickness carbon fiber composite material joint forming die as claimed in claim 1, wherein the upper end surface of the support die (1) is provided with a glue overflow groove; and continuous glue overflow grooves are formed in the cylinder wall and the upper end surface of the cylinder body of the positioning sleeve (3).
8. The large-thickness carbon fiber composite material joint forming die as claimed in claim 1, wherein the inner end of the cylinder body of the positioning sleeve (3) is provided with a reinforcing rib (33).
9. The large-thickness carbon fiber composite material joint forming die as claimed in claim 1, wherein the supporting die (1) further comprises a section of cylindrical surface (17), the cylindrical surface is located at the lower end of the inner conical surface and is naturally continuous with the inner conical surface, and the cylindrical surface and the inner conical surface form part of the cavity surface of the layer cavity forming surface.
10. The large-thickness carbon fiber composite connector forming die as claimed in claim 1, wherein the support die (1), the annular bottom plate (2), the positioning sleeve (3) and/or the annular cover (4) are provided with threaded holes for installing hoisting screws and/or jackscrew stripping screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221002358.4U CN217729734U (en) | 2022-04-27 | 2022-04-27 | Large-thickness carbon fiber composite material joint forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221002358.4U CN217729734U (en) | 2022-04-27 | 2022-04-27 | Large-thickness carbon fiber composite material joint forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217729734U true CN217729734U (en) | 2022-11-04 |
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ID=83816875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221002358.4U Active CN217729734U (en) | 2022-04-27 | 2022-04-27 | Large-thickness carbon fiber composite material joint forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217729734U (en) |
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2022
- 2022-04-27 CN CN202221002358.4U patent/CN217729734U/en active Active
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Address after: 312030 Building 2, Haitu jiuyiqiu, Binhai Industrial Zone, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: Shaoxing Baojing composite material Co.,Ltd. Patentee after: Shaoxing Baojing Composite Technology Research and Development Co.,Ltd. Address before: 312030 Building 2, Haitu jiuyiqiu, Binhai Industrial Zone, Keqiao District, Shaoxing City, Zhejiang Province Patentee before: Shaoxing Baojing composite material Co.,Ltd. Patentee before: JINGGONG (SHAOXING) COMPOSITE TECHNOLOGY R & D CO.,LTD. |