CN216099931U - Device for forming composite material blade - Google Patents
Device for forming composite material blade Download PDFInfo
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- CN216099931U CN216099931U CN202121831754.3U CN202121831754U CN216099931U CN 216099931 U CN216099931 U CN 216099931U CN 202121831754 U CN202121831754 U CN 202121831754U CN 216099931 U CN216099931 U CN 216099931U
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- die body
- air bag
- joint
- composite material
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Abstract
The utility model discloses a device for molding a composite material blade and a using method thereof, wherein the device comprises a supporting frame and a die body arranged on the supporting frame; an air bag is arranged in the cavity of the die body, and the shape and the size of the inflated air bag are consistent with those of the inner cavity of the composite material blade to be manufactured; one end of the die body, which is positioned at the root part of the composite material blade, is provided with an air nozzle connected with the air bag; the prepreg for manufacturing the composite material blade is arranged in the die body and coated on the air bag, and the composite material blade is formed by blowing the air bag, so that the problems of foam fragmentation and vacuum belt residue are solved. The composite material blade formed by the device has the advantages of good forming quality, high forming efficiency and low manufacturing cost. The forming process is simple and convenient to operate, easy to integrate, more beneficial to batch production and very high in practical value.
Description
Technical Field
The utility model relates to a device for forming a composite material blade.
Background
At present, composite material blades in the industry are manufactured by adopting a mould pressing process and an autoclave process. The molding process needs to process the foam core first and then press the carbon fiber prepreg on the outer side of the foam core. However, in the processing process of the foam core, as the size of the inner cavity of the common composite material blade is smaller, the processing precision of the foam cannot reach the required size; even some composite material blades with narrow cavity structures can not be processed by the foam core when the mould pressing process is adopted; in addition, there is a risk of the foam breaking during the moulding process, resulting in the blade being scrapped. When the autoclave process is adopted to manufacture the composite material blade, a vacuum belt needs to be plugged into the prepreg, and the blade is molded under the action of the vacuum belt. However, the vacuum belt is time-consuming and labor-consuming to manufacture, and the elasticity of the vacuum belt is small, so that the vacuum belt cannot be taken out after the composite material blade is formed, and the vacuum belt remains in the composite material blade, thereby affecting the forming quality of the composite material blade.
Therefore, how to improve the forming equipment of the composite material blade to fundamentally solve the above disadvantages becomes an important technical problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
Aiming at the existing problems, the utility model provides a device for forming composite material blades, which is used for forming the composite material blades in an oven by adding an air bag into a mould. The specific technical scheme is as follows:
an apparatus for forming a composite blade includes a support frame and a mold body disposed on the support frame; an air bag is arranged in the cavity of the die body, and the shape and the size of the inflated air bag are consistent with the shape and the size of the inner cavity of the composite material blade to be manufactured; one end of the die body, which is positioned at the root part of the composite material blade, is provided with an air nozzle connected with the air bag; the prepreg for manufacturing the composite material blade is arranged in the die body and coated on the air bag.
According to the device for forming the composite material blade, the air nozzle is connected with the air bag through the connector assembly, the connector assembly comprises an end plate connected to the die body, a connector through hole is formed in the middle of the end plate and used for the air bag connector to pass through, and the air nozzle is connected to the end portion of the air bag connector; the joint assembly further comprises a sealing sleeve which comprises a breathable felt arranged in the joint through hole and wrapping the air bag joint, a high-temperature-resistant gasket positioned at the connecting part of the end part of the air bag joint and the air faucet, and a flange seat used for fixing the air bag joint and the end plate. Preferably, the outer surface of the air bag joint is provided with a bulge, and the inside of the flange seat is provided with a corresponding groove for installation and positioning. Preferably, the front end of the air bag joint is provided with threads, and the air bag joint is locked on the outer side of the flange seat through a nut.
The device for molding the composite material blade is characterized in that the die bodies are divided into two parts and comprise a lower die body and an upper die body, wherein the lower die body is fixedly arranged on the supporting frame, the upper die body is matched with the lower die body, the lower die body is fixed on the supporting frame through an angle steel sheet and a screw, and the upper die body and the lower die body are positioned and locked through a positioning pin and a bolt. The end plate is also divided into two parts, namely an upper end plate and a lower end plate which respectively correspond to the upper die body and the lower die body and are respectively fixed at the end parts of the upper die body and the lower die body through screws.
The use method of the device for forming the composite material blade comprises the following steps:
s1, laying prepreg: respectively laying carbon fiber prepreg for manufacturing the composite material blade on the molded surfaces of the upper mold body and the lower mold body;
s2, pre-filling an air bag: mounting and fixing the lower mold body paved with the prepreg on a frame, placing an air bag on the prepreg, and then closing the upper mold body paved with the prepreg and the lower mold body;
s3, fixing the air bag joint: sleeving a high-temperature-resistant gasket at the end part of the air bag joint, paving and filling an air felt in a joint through hole of an end plate, enabling the air bag joint to penetrate through the joint through hole, and installing and fixing the end plate on a die body; then fixing the flange seat sleeve on the end plate through the air bag joint;
s4, assembling an air faucet: connecting the air tap in a high-temperature-resistant gasket sleeve at the end part of the air bag joint;
s5, blow molding: putting the assembled device into a drying oven to heat, injecting air into the air bag through the air nozzle to expand the air bag in the die body, blowing the carbon fiber prepreg into the shape of the blade, stopping injecting the air after the blade is shaped, and taking the whole device out of the drying oven;
s6, demolding and taking out: and (3) dismantling the air nozzle, evacuating the air bag, dismantling the joint assembly, taking the air bag out of the cavity of the die body, finally dismantling the upper die body, and taking out the molded composite material blade.
The method has the beneficial effects that:
(1) the composite material blade formed by the device has the advantages of good forming quality, high forming efficiency and low manufacturing cost.
(2) The composite material blade formed by the device is simple and convenient to operate, easy to integrate and more beneficial to batch production.
(3) The device can realize the molding of the composite material blade with a narrow cavity structure, and has no problems of foam fragmentation and vacuum belt residue.
(4) The device adopts the silica gel air bag to carry out internal pressurization, and is favorable for demoulding after forming due to the non-adhesive characteristic of the silica gel.
(5) The device also realizes the self-sealing of the silica gel air bag by designing the air bag joint and adopting a mechanical sealing mode.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for forming a composite blade according to the present invention;
FIG. 2 is a schematic longitudinal sectional view of the apparatus of the present invention;
FIG. 3 is a schematic view of the mold body structure of the present invention;
fig. 4 and 5 are schematic views of the joint assembly of the present invention.
In the figure: 1. a support frame; 2. a mold body; 21. a lower die body; 22. feeding a mold body; 3. an air bag; 31. an air bag joint; 4. a composite blade; 5. an air tap; 6. a joint assembly; 61. an end plate; 62. a joint through hole; 63. an air-permeable felt; 64. a high temperature resistant gasket; 65. a flange seat; 7. angle steel sheets; 8. a screw; 9. and a positioning pin.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the embodiments and the accompanying drawings, and it is to be understood that the described embodiments are merely preferred embodiments of the present invention, rather than all embodiments, and are not intended to limit the present invention in other forms, and that any person skilled in the art may make changes or modifications using the technical contents disclosed. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
An apparatus for forming a composite blade, as shown in fig. 1 to 5, comprises a support frame 1 and a mould body 2 arranged on the support frame 1; an air bag 3 is arranged in the cavity of the die body 2, and the shape and the size of the inflated air bag 3 are consistent with the shape and the size of the inner cavity of the composite material blade 4 to be manufactured; one end of the die body 2, which is positioned at the root part of the composite material blade 4, is provided with an air nozzle 5 connected with the air bag 3; the prepreg for manufacturing the composite material blade 4 is arranged in the die body 2 and coated on the air bag 3, and the composite material blade 4 is formed by blowing the air bag 3, so that the problems of foam fragmentation and vacuum belt residue are solved.
The device for composite material blade shaping described in this embodiment, air cock 5 links to each other with gasbag 3 through joint Assembly 6, joint Assembly 6 is including connecting the end plate 61 on die body 2, end plate 61 middle part is equipped with connects through-hole 62 for gasbag connects 31 to pass through, the tip at gasbag joint 31 is connected to air cock 5. In addition, the joint assembly 6 further includes a sealing assembly including a felt 63 disposed in the joint through hole 62 and wrapping the air bag joint 31, a high temperature-resistant gasket 64 disposed at a connection portion of the end portion of the air bag joint 31 and the air faucet 5, and a flange seat 65 for fixing the air bag joint 31 to the end plate 61. And the outer surface of the air bag joint 31 is provided with a bulge, and the flange seat 65 is internally provided with a corresponding groove which is matched with the bulge on the air bag joint, so that the position of the air bag is ensured not to be changed, and the installation and the positioning are convenient. The front end of the air bag joint 31 is provided with threads and is locked on the outer side of the flange seat 65 through a nut, so that the air tightness of the air bag is ensured.
In the device for molding the composite material blade, the mold body 2 is divided into two mold bodies, and includes a lower mold body 21 fixed on the support frame 1 and an upper mold body 22 matched with the lower mold body, the lower mold body 21 is fixed on the support frame 1 through the angle steel sheet 7 and the screw 8, and the upper mold body 22 and the lower mold body 21 are positioned and locked through the positioning pin 9 and the bolt. The end plate 61 is also divided into two parts, namely an upper end plate and a lower end plate which correspond to the upper die body 22 and the lower die body 21 respectively, and the two end plates are fixed at the end parts of the upper die body 22 and the lower die body 21 respectively through screws 8, so that the air bags can be conveniently placed and installed.
The use method for the composite material blade forming device comprises the following steps:
s1, laying prepreg: respectively laying carbon fiber prepreg for manufacturing the composite material blade 4 on the molded surfaces of the upper die body 22 and the lower die body 21;
s2, pre-filled balloon 3: installing and fixing the lower die body 21 paved with the prepreg on a frame, placing the air bag 3 on the prepreg, and then closing the upper die body 22 paved with the prepreg and the lower die body 21;
s3, fixing the airbag connector 31: sleeving a high-temperature-resistant gasket 64 at the end part of the air bag joint 31, paving and filling an air-permeable felt 63 in a joint through hole 62 of an end plate 61, enabling the air bag joint 31 to penetrate through the joint through hole 62, and installing and fixing the end plate 61 on the die body 2; then the flange seat 65 is sleeved on the air bag joint 31 and fixed on the end plate 61;
s4, assembling air faucet 5: connecting the air tap 5 in a high-temperature-resistant gasket 64 sleeve at the end part of the air bag joint 31;
s5, blow molding: putting the assembled device into a drying oven to heat, simultaneously injecting air into the air bag 3 through the air nozzle 5 to expand the air bag 3 in the die body 2, blowing the carbon fiber prepreg into the shape of the blade, stopping injecting the air after the blade is shaped, and taking the whole device out of the drying oven;
s6, demolding and taking out: and (3) dismantling the air nozzle 5, evacuating the air bag 3, dismantling the joint assembly 6, taking the air bag 3 out of the cavity of the die body 2, finally dismantling the upper die body 22, and taking out the molded composite material blade 4.
In general, the utility model has the following beneficial effects:
(1) the composite material blade formed by the device has the advantages of good forming quality, high forming efficiency and low manufacturing cost.
(2) The composite material blade formed by the device is simple and convenient to operate, easy to integrate and more beneficial to batch production.
(3) The device can realize the molding of the composite material blade with a narrow cavity structure, and has no problems of foam fragmentation and vacuum belt residue.
(4) The device adopts the silica gel air bag to carry out internal pressurization, and is favorable for demoulding after forming due to the non-adhesive characteristic of the silica gel.
(5) The device also realizes the self-sealing of the silica gel air bag by designing the air bag joint and adopting a mechanical sealing mode.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. An apparatus for forming a composite blade, comprising: comprises a supporting frame (1) and a mold body (2) arranged on the supporting frame (1); an air bag (3) is arranged in a cavity of the die body (2), and the shape and the size of the inflated air bag (3) are consistent with the shape and the size of an inner cavity of the composite material blade (4) to be manufactured; one end of the die body (2) positioned at the root of the composite material blade (4) is provided with an air nozzle (5) connected with the air bag (3); the prepreg for manufacturing the composite material blade (4) is arranged in the die body (2) and covers the air bag (3).
2. An apparatus for composite blade moulding according to claim 1, wherein: air cock (5) link to each other with gasbag (3) through joint Assembly (6), joint Assembly (6) are including connecting end plate (61) on die body (2), end plate (61) middle part is equipped with connects through-hole (62) for gasbag joint (31) pass through, the tip at gasbag joint (31) is connected in air cock (5).
3. An apparatus for composite blade moulding according to claim 2, wherein: the joint assembly (6) further comprises a sealing kit, wherein the sealing kit comprises an air-permeable felt (63) which is arranged in the joint through hole (62) and wraps the air bag joint (31), a high-temperature-resistant gasket (64) which is positioned at the connecting part of the end part of the air bag joint (31) and the air tap (5), and a flange seat (65) which is used for fixing the air bag joint (31) and the end plate (61).
4. An apparatus for composite blade moulding according to claim 3, wherein: the outer surface of the air bag joint (31) is provided with a bulge, and a corresponding groove is formed in the flange seat (65) and used for installation and positioning.
5. An apparatus for composite blade moulding according to claim 4, wherein: the front end of the air bag joint (31) is provided with threads and is locked on the outer side of the flange seat (65) through a nut.
6. An apparatus for composite blade moulding according to claim 1, wherein: the die body (2) is divided into two parts, and comprises a lower die body (21) and an upper die body (22), wherein the lower die body (21) is fixedly arranged on the supporting frame (1) and is matched with the supporting frame, the lower die body (21) is fixedly arranged on the supporting frame (1) through an angle steel sheet (7) and a screw (8), and the upper die body (22) and the lower die body (21) are positioned and locked through a positioning pin (9) and a bolt.
7. An apparatus for composite blade moulding according to claim 2, wherein: the end plates (61) are divided into two parts, the two parts are respectively an upper end plate and a lower end plate corresponding to the upper die body (22) and the lower die body (21), and the two parts are respectively installed and fixed at the end parts of the upper die body (22) and the lower die body (21) through screws (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121831754.3U CN216099931U (en) | 2021-08-06 | 2021-08-06 | Device for forming composite material blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121831754.3U CN216099931U (en) | 2021-08-06 | 2021-08-06 | Device for forming composite material blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216099931U true CN216099931U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121831754.3U Active CN216099931U (en) | 2021-08-06 | 2021-08-06 | Device for forming composite material blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216099931U (en) |
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2021
- 2021-08-06 CN CN202121831754.3U patent/CN216099931U/en active Active
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