CN117416062A - Shell forming method with grid ribs and reinforcing areas - Google Patents
Shell forming method with grid ribs and reinforcing areas Download PDFInfo
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- CN117416062A CN117416062A CN202311442029.0A CN202311442029A CN117416062A CN 117416062 A CN117416062 A CN 117416062A CN 202311442029 A CN202311442029 A CN 202311442029A CN 117416062 A CN117416062 A CN 117416062A
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- grid
- prepreg
- reinforcing
- layering
- forming
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002356 single layer Substances 0.000 claims description 8
- 238000009461 vacuum packaging Methods 0.000 claims description 3
- 230000007480 spreading Effects 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010112 shell-mould casting Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
-
- 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
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
Abstract
The invention discloses a shell forming method with grid ribs and a reinforcing area, wherein when the grid ribs are paved in a region, continuous and reliable paving between the grid ribs is kept through the first-direction paving and the second-direction paving, when the grid ribs are paved in the reinforcing area, the prepreg is continuously paved in the first-direction paving and the second-direction paving in the grid rib region, and is folded in the third-direction paving in the reinforcing area, so that the continuous paving is carried out on the original grid ribs, the continuity between the reinforcing area and the grid ribs is kept, the overall stability is improved, and the prepreg is continuously extended and paved in the third-direction paving, the overall structural strength is uniformly improved, and then the prepreg is continuously filled in the third-direction paving, so that the thickness of the local part is prevented from accumulating and uncontrollably while the thickness of the prepreg is not damaged on the premise of meeting the thickness requirement of the reinforcing area, the formed object is higher in overall strength, the mechanical property is improved, the internal quality of a product is ensured, and the bearing capacity is improved.
Description
Technical Field
The application relates to the technical field of composite material forming, in particular to a shell forming method with grid ribs and a reinforcing area.
Background
The information provided in this section is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present disclosure.
At present, a carbon fiber composite material shell with grid ribs and local reinforcing areas which are staggered is formed by a layering process in a forming process; most of the existing carbon fiber shells contain grid ribs and reinforcing areas, so that the bearing performance of the shells is improved, the situation of local stress concentration is avoided, and the strength of the structure is changed. However, the staggered condition of the grid ribs and the reinforced areas is complex, continuous layering is adopted in the grid ribs and the reinforced areas in the actual layering process forming process, uneven thickness occurs at the interpenetration parts, the surface of the subsequent product is uneven, or the continuity of fibers cannot be ensured, the internal quality of the product cannot be ensured, and the integral strength of the structure is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides a shell forming method with grid ribs and a reinforcing area, so as to solve the problems that the forming method in the prior art has uneven layering or has poor continuity to influence the strength.
The above purpose of the present application is mainly achieved by the following technical solutions:
a method of forming a shell having grid ribs and reinforcing regions, the method comprising the steps of:
arranging a layering mold;
taking prepreg, paving the prepreg in the first direction along the first direction in the grid rib grooves in the first direction, paving the prepreg in the second direction in the grid rib grooves in the second direction, and repeating the grid rib paving operation until the grid rib grooves are filled;
layering the prepreg on the grid ribs along the first direction or the second direction respectively towards the reinforcing area, folding and layering the prepreg on the reinforcing area in a third direction after the prepreg extends to the junction with the reinforcing area, filling the prepreg in the reinforcing area in the third direction, and repeating the layering of the reinforcing area until the height of the reinforcing area is reached;
and (5) demoulding after curing and forming.
In an alternative embodiment, the first direction and the second direction are perpendicular to each other.
In an alternative embodiment, the angle between the third direction and the first direction or the second direction is 45 °.
In an alternative embodiment, when the grid rib is laid, one end of the prepreg in the grid rib groove in the first direction is turned over to two sides after being dispersed, and laid in the grid rib groove in the second direction along the second direction, and/or one end of the prepreg in the grid rib groove in the second direction is turned over to two sides after being dispersed, and laid in the grid rib groove in the first direction along the first direction.
In an alternative embodiment, the prepreg is taken to fill the reinforcing region in the third direction, and the thickness of the single layer of the reinforcing region is always kept uniform.
In an alternative embodiment, the prepreg extends in a third direction to the boundary of the reinforced region when the reinforced region is laid up and the thickness of the reinforced region is uniform.
In an alternative embodiment, when the reinforcement areas are laid up, a greater thickness is obtained by multiple turns of the prepreg in the third direction when the reinforcement areas are not uniform in thickness.
In an alternative embodiment, the grid rib is laid alternately in the first grid rib groove and in the grid rib groove in the second direction.
In an alternative embodiment, after the grid rib is laid, the grid rib is compacted and repaired until the top of the grid rib is flush with the bottom of the reinforcing area.
In an alternative embodiment, the reinforced area is paved, the temperature is not higher than 100 ℃ and then the tank is pre-pressed, the skin is paved, the die is assembled and the vacuum is packed in sequence, and then the reinforced area is placed in an autoclave for curing and forming.
Compared with the prior art, the advantage of this application lies in:
the shell molding method is used for molding the shell with the grid rib and the reinforcing area, firstly, arranging a layering mold, layering the prepreg in the grid rib groove in the first direction along the first direction, layering the prepreg in the grid rib groove in the second direction along the second direction, repeating the layering of the grid rib until the grid rib groove is filled, layering the prepreg in the first direction or the second direction on the grid rib, folding and layering the prepreg in the third direction onto the reinforcing area after the prepreg extends to the junction with the reinforcing area, filling the prepreg in the reinforcing area in the third direction again, repeating the layering of the reinforcing area until the target height of the reinforcing area is reached, demolding after the final curing molding, and layering in the grid rib area, through first direction spreading and second direction spreading, keep the continuous reliable spreading between the net muscle, when carrying out the reinforcement district spreading, prepreg continues to spread with first direction spreading and second direction spreading in net muscle region, and turn over in the third direction is carried out in the reinforcement district, so that carry out continuous spreading on former net muscle, keep reinforcement district and net muscle continuity, improve overall stability, and keep prepreg continuous extension spreading through turning over while, spread with the third direction, evenly improve overall structural strength, then continue to pack with the third direction, under the prerequisite of satisfying reinforcement district thickness requirement, avoid local thickness to pile up when not destroying prepreg continuity, uncontrollable, the object bulk strength after the shaping is higher, mechanical properties obtains promoting, product internal quality has been guaranteed, the bearing capacity is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the description of the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for forming a shell according to an embodiment of the present application;
fig. 2 is a schematic view of a housing structure according to an embodiment of the present application;
FIG. 3 is a schematic diagram of layering in a first direction and a second direction according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of layering in a first direction, a second direction, and a third direction according to an embodiment of the present disclosure;
in the figure: 100. a reinforcing region; 200. grid ribs.
Detailed Description
The invention is further described with reference to the drawings and specific examples. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention. Specific structural and functional details disclosed herein are merely representative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Fig. 1 is a schematic flow chart of a method for forming a shell according to an embodiment of the present application, fig. 2 is a schematic flow chart of a shell structure according to an embodiment of the present application, fig. 3 is a schematic layering view in a first direction and a second direction according to an embodiment of the present application, and fig. 4 is a schematic layering view in a first direction, a second direction and a third direction according to an embodiment of the present application.
In fig. 3 and 4, a refers to a schematic view of a first-direction lay-up prepreg, b refers to a schematic view of a second-direction lay-up prepreg, and c refers to a schematic view of a third-direction lay-up prepreg.
As shown in fig. 1, a method for forming a shell with grid ribs and reinforcing areas, the method comprising the following steps:
arranging a layering mold;
as shown in fig. 3, taking prepreg, layering along a first direction in the grid rib grooves in the first direction, layering along a second direction in the grid rib grooves in the second direction, and repeating the layering of the grid ribs 200 until the grid rib grooves are filled;
as shown in fig. 4, the prepreg is taken and layered on the grid rib 200 towards the reinforcing area 100 along the first direction or the second direction, after the prepreg extends to the junction with the reinforcing area 100, the prepreg is folded and layered on the reinforcing area 100 along the third direction, and then the prepreg is taken and filled in the reinforcing area 100 along the third direction, and the layering of the reinforcing area 100 is repeatedly operated until the target height of the reinforcing area 100 is reached;
and (5) demoulding after curing and forming.
In some embodiments, the method for forming the shell with the grid ribs and the reinforcing areas is as follows: the shell molding method is used for molding the shell with the grid rib and the reinforcing area, firstly arranging a layering mold, layering the prepreg in the grid rib groove in the first direction along the first direction, layering the grid rib groove in the second direction along the second direction, repeating the layering of the grid rib 200 until the grid rib groove is filled, layering the prepreg on the grid rib 200 towards the reinforcing area 100 along the first direction or the second direction respectively, folding and layering the prepreg on the reinforcing area 100 in the third direction after the prepreg extends to the junction with the reinforcing area 100, filling the prepreg in the reinforcing area 100 in the third direction again, repeating the layering of the reinforcing area 100 until the target height of the reinforcing area 100 is reached, finally demolding after curing molding, layering through the layering in the first direction and layering in the second direction when layering the grid rib 200 area, the continuous and reliable layering between the grid ribs 200 is maintained, when layering is carried out in the reinforcing area 100, the prepreg is continuously layered in the first direction and layered in the second direction in the area of the grid ribs 200, and the reinforcing area 100 is folded in the third direction, so that continuous layering is carried out on the original grid ribs 200, continuity of the reinforcing area 100 and the grid ribs 200 is maintained, overall stability is improved, layering is carried out in the third direction while the prepreg is continuously extended through folding, overall structural strength is uniformly improved, and then the prepreg is continuously filled in the third direction, so that local thickness accumulation and uncontrollable is avoided while the continuity of the prepreg is not damaged on the premise of meeting the thickness requirement of the reinforcing area 100, the overall strength of a molded object is higher, the internal quality of a product is ensured, and the bearing capacity is improved.
In an alternative embodiment, the first direction and the second direction are perpendicular to each other, and on the inner wall of the formed shell, grid ribs 200 are formed and arranged perpendicular to each other, so that the structural performance of the shell is improved, a more stable state is maintained under the condition of bearing external forces in different directions, and in actual operation, the first direction can be arranged to be in a 0-degree direction and the second direction can be arranged to be in a 90-degree direction based on the length or width direction of the shell.
In an alternative embodiment, the included angle between the third direction and the first direction or the second direction is 45 °, and the reinforcing area 100 and the grid rib 200 after the layering is completed are more integrated through the included angle formed between the third direction and the first direction and the second direction, so that the whole reinforcing area is more stable in more complex stress directions.
In an alternative embodiment, when the grid rib 200 is laid, one end of the prepreg in the grid rib groove in the first direction is turned over to two sides after being dispersed, and is laid in the grid rib groove in the second direction along the second direction, and/or one end of the prepreg in the grid rib groove in the second direction is turned over to two sides after being dispersed, and is laid in the grid rib groove in the first direction along the first direction.
As shown in fig. 2, it should be noted that, in order to better control the layering height and uniformity between the first-direction grid rib grooves and the second-direction grid rib grooves, one end of the prepreg in the first-direction grid rib grooves is dispersed to form relatively narrow tows, and then the second-direction prepreg is folded into the second-direction grid rib grooves, or one end of the prepreg in the second-direction grid rib grooves is dispersed to form relatively narrow tows, and then the first-direction prepreg is folded into the second-direction grid rib grooves, so that the thickness of the overlapping part and the thickness of the non-overlapping part are inevitably different when the grid ribs 200 are paved, and the thickness of the prepreg is controlled, and meanwhile, the layering of the grid ribs 200 is avoided, so that the overall structural strength of the grid ribs 200 is greatly reduced, the overall structural strength is maintained, the control thickness is improved, and the forming effect is improved.
In an alternative embodiment, when the prepreg is taken to be filled in the reinforcing area 100 in the third direction, the thickness of the single layer of the reinforcing area 100 is always kept consistent, the single layer is repeatedly paved, the paving operation on the next height is performed after the single layer operation is completed, the single layer is kept to have a complete and continuous structural state, and when the height needs to be adjusted, corresponding measures can be taken between the paving operations.
In an alternative embodiment, when the thickness of the reinforced region 100 is consistent, the prepreg extends to the boundary portion of the reinforced region 100 in the third direction, the thickness of the whole reinforced region 100 is consistent, and the prepreg is directly paved to the boundary portion of the reinforced region 100 in the third direction through continuous and complete prepreg, so that the paving efficiency and the uniformity of the whole thickness of the reinforced region 100 are maintained.
In an alternative embodiment, when the thickness of the reinforcing area 100 is inconsistent, a larger thickness is obtained by repeatedly folding the prepreg in the third direction, different thicknesses are set in different areas on the reinforcing area 100 according to design requirements, the overall weight can be reduced, local reinforcement can be performed according to stress analysis of the housing, the structural strength is improved, the local thickness is flexibly improved under the condition that the prepreg fiber is not cut by repeatedly folding the reinforcing area, and the operation convenience is improved.
In an alternative embodiment, when the grid ribs 200 are paved, the first grid rib grooves and the second grid rib grooves are paved alternately, and the grid ribs 200 improve the connection stability between the grid ribs 200 and the pavement in an alternate paving mode, so that the overall strength is higher, compared with the reinforcing area 100.
In an alternative embodiment, after the grid bar 200 is laid, the grid bar 200 is compacted and repaired until the top of the grid bar 200 is flush with the bottom of the reinforcing section 100.
In an alternative embodiment, the reinforcing area 100 is pre-pressed in a tank at a temperature not higher than 100 ℃ after being paved, and then skin paving, die assembly and vacuum packaging are sequentially performed, and the reinforced area is placed in an autoclave for curing and forming.
In actual operation, the following steps are carried out:
1) Arranging a die and completing assembly;
2) Determining parameter information of the grid ribs 200 and the reinforcing area 100 of the shell, and selecting T800 carbon fibers and bismaleimide resin as prepregs, wherein the curing temperature is 200 ℃;
3) The single-layer thickness of the prepreg is 0.125mm, and the number of layers of the grid rib 200 to be paved is determined according to the height of the grid rib 200; determining the number of layers of the reinforcing area 100 to be paved according to the thickness of the reinforcing area 100;
4) Alternating layering before the grid ribs 200, wherein the layering directions of the grid ribs 200 are all the extending directions of grid rib grooves, when alternating layering is performed, taking prepreg to lay 2 layers in the grid rib grooves of 0 degrees at 0 degrees, then taking prepreg to lay 2 layers in the grid rib grooves of 90 degrees at 90 degrees, and repeating alternating layering until the grid rib grooves on the die are filled;
5) After the grid ribs 200 are paved, compacting the grid ribs 200, and repairing to ensure that the grid ribs are in subsidence and flatness with the reinforcing area 100;
6) Continuously layering the prepreg at the grid rib grooves in the direction of 0 degrees, folding the prepreg after extending to the reinforced area 100, layering the prepreg in the reinforced area 100 in the direction of 45 degrees, continuously layering the prepreg at the grid rib grooves in the direction of 90 degrees, folding the prepreg after extending to the reinforced area 100, and layering the prepreg in the reinforced area 100 in the direction of 45 degrees;
7) Filling the prepreg in the reinforced area 100 in the 45-degree direction, finishing single-layer layering of the reinforced area 100, repeating until the reinforced area 100 reaches the target thickness, and repeatedly folding in the reinforced area 100 with larger thickness to ensure that the prepreg is always stacked for multiple times in the 45-degree direction to finish the layering with increased thickness;
8) Pre-pressing in a tank at-0.09 MPa and 0.3MPa under 90 deg.c for 2 hr;
9) Repairing the material shortage part after pre-pressing the grid ribs 200 and the reinforcing area 100, performing subsequent skin layering, closing the mould after the skin layering is completed, performing vacuum packaging, then sending into an autoclave for curing and forming, wherein the curing vacuum is-0.09 MPa, the autoclave pressure is 0.3MPa, and the curing temperature is 200 ℃;
10 Demoulding, removing the coating material in sequence, and disassembling the mould to obtain a shell with the grid ribs 200 and the reinforcing area 100;
11 Machining the end face of the housing and the opening.
It should be appreciated that the terms first, second, etc. are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.
It should be understood that in the description of the present invention, the terms "upper", "vertical", "inner", "outer", etc. indicate an orientation or a positional relationship in which the disclosed product is conventionally put in use, or an orientation or a positional relationship that is conventionally understood by those skilled in the art, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates to the contrary. It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
In the following description, specific details are provided to provide a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the example embodiments.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Claims (10)
1. A method for forming a shell with grid ribs and reinforcing areas, which is characterized by comprising the following steps:
arranging a layering mold;
taking prepreg, paving the prepreg in the first direction along the first direction in the grid rib grooves in the first direction, paving the prepreg in the second direction in the grid rib grooves in the second direction, and repeating the grid rib paving operation until the grid rib grooves are filled;
layering the prepreg on the grid ribs along the first direction or the second direction respectively towards the reinforcing area, folding and layering the prepreg on the reinforcing area in a third direction after the prepreg extends to the junction with the reinforcing area, filling the prepreg in the reinforcing area in the third direction, and repeating the layering of the reinforcing area until the height of the reinforcing area is reached;
and (5) demoulding after curing and forming.
2. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: the first direction and the second direction are perpendicular to each other.
3. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: the included angle between the third direction and the first direction or the second direction is 45 degrees.
4. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: when the grid rib is paved, one end of the prepreg in the grid rib groove in the first direction is turned over to two sides after being dispersed, and is paved in the grid rib groove in the second direction along the second direction, and/or one end of the prepreg in the grid rib groove in the second direction is turned over to two sides after being dispersed, and is paved in the grid rib groove in the first direction along the first direction.
5. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: when the prepreg is filled in the reinforced area in the third direction, the single-layer thickness of the reinforced area is always kept consistent.
6. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: when the reinforcing area is paved, the prepreg extends to the boundary part of the reinforcing area in a third direction when the thickness of the reinforcing area is consistent.
7. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: when the thickness of the reinforced area is inconsistent, the prepreg is folded for a plurality of times in the third direction to obtain larger thickness.
8. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: and when the grid ribs are paved, the first grid rib grooves and the second grid rib grooves are alternately paved.
9. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: and after the grid rib is paved, compacting the grid rib part and repairing until the top of the grid rib is level with the bottom of the reinforced area.
10. The method of forming a shell having grid ribs and reinforcing areas of claim 1, wherein: and (3) entering a tank for prepressing at the temperature not higher than 100 ℃ after layering in the reinforcing area, sequentially performing skin layering, die assembly and vacuum packaging, and then placing in an autoclave for curing and forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311442029.0A CN117416062A (en) | 2023-10-31 | 2023-10-31 | Shell forming method with grid ribs and reinforcing areas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311442029.0A CN117416062A (en) | 2023-10-31 | 2023-10-31 | Shell forming method with grid ribs and reinforcing areas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117416062A true CN117416062A (en) | 2024-01-19 |
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ID=89526217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311442029.0A Pending CN117416062A (en) | 2023-10-31 | 2023-10-31 | Shell forming method with grid ribs and reinforcing areas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117416062A (en) |
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2023
- 2023-10-31 CN CN202311442029.0A patent/CN117416062A/en active Pending
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