CN219600459U - Composite plate spring die and composite plate spring - Google Patents
Composite plate spring die and composite plate spring Download PDFInfo
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- CN219600459U CN219600459U CN202320791777.9U CN202320791777U CN219600459U CN 219600459 U CN219600459 U CN 219600459U CN 202320791777 U CN202320791777 U CN 202320791777U CN 219600459 U CN219600459 U CN 219600459U
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Abstract
Composite plate spring mold, method for enhancing interlayer strength of composite plate spring and composite plate spring, and relates to the field of composite materials. In order to solve the problems that the interlayer performance of a composite material is much lower than that of a metal material in the prior art, layering and even fiber breakage are generated between layers when a plate spring is subjected to bending deformation, the normal use of an automobile is influenced, and the safety of passengers is possibly threatened, the utility model provides the following technical scheme: composite plate spring mould, mould includes: an upper die, a lower die, an upper preform, and a lower preform; the upper preformed blank and the lower preformed blank are buckled to form a cavity; the upper preform and the lower preform are provided with opposite through holes; the shape of the cavity formed after the upper die and the lower die are buckled is consistent with the external shape of the upper preformed blank and the lower preformed blank after the upper die and the lower die are buckled, and the opposite surfaces of the upper die and the lower die are provided with bulges, and the number and the shape of the bulges are consistent with those of the through holes. Is suitable for engineering application and mass production of products.
Description
Technical Field
Relates to the field of composite materials, in particular to the strength enhancement of a composite material plate spring.
Background
At present, the automobile leaf spring commonly used mostly adopts a metal structure. With the demand of lightweight design of structures, the weight reduction requirements of traditional structures such as metal steel, aluminum alloy and the like are difficult to meet. The fiber composite material has the mechanical characteristics of high specific strength, specific rigidity and the like, and the characteristics of designability and light weight, so that the fiber composite material is widely applied to the fields of rail transit, aerospace and the like.
Compared with the traditional metal material, the composite material can improve the damping performance of the structure and has the weight reduction effect. The fiber composite material has better rigidity, strength and damping property in the fiber direction than the metal material, but the interlayer performance of the composite material is much lower than that of the metal material.
The utility model patent application ZL202121931817.2, published in 2/8 of 2022, discloses a mould for preparing a composite plate spring body, a plate spring body and a plate spring assembly, wherein the mould comprises an upper mould and a lower mould, and the upper mould is arranged above the lower mould; the lower surface of the upper die extends upwards in the central area to form a first groove, the lower surface of the upper die extends upwards in the edge area to form a first step, and a first bulge is formed between the first groove and the first step; the upper surface of the lower die extends downwards in the central area to form a second groove; when the upper die is placed above the lower die, the upper surface of the first step parallel to the upper die is contacted with the upper surface of the surrounding area of the second groove, the space formed by the first groove and the second groove is matched with the appearance of the plate spring body, and a gap is formed between the outer side of the first bulge and the inner side of the second groove. The die can cut burrs or burrs on the basis of guaranteeing the mechanical property of the composite plate spring.
However, although the problem of burrs or flashes is solved, the conventional composite material is still adopted to simply mold the plate spring.
When the plate spring formed by simple die assembly of the traditional composite material is subjected to vehicle-mounted bending deformation, interlayer stress exceeds a material tolerance value to generate layering, even fibers are broken, so that normal use of an automobile is influenced, and safety of passengers is possibly threatened.
Disclosure of Invention
In order to solve the problems that in the prior art, the interlayer performance of a composite material is much lower than that of a metal material, when a plate spring is subjected to vehicle-mounted bending deformation, interlayer stress exceeds a material tolerance value to generate layering and even fiber breakage, the normal use of an automobile is influenced, and the safety of passengers is possibly threatened, the utility model provides the following technical scheme:
a composite leaf spring mold, the mold comprising:
an upper die, a lower die, an upper preform, and a lower preform;
the upper preformed blank and the lower preformed blank are buckled to form a cavity;
the upper preform and the lower preform are provided with opposite through holes;
the shape of the cavity formed after the upper die and the lower die are buckled is consistent with the external shape of the upper preformed blank and the lower preformed blank after the upper die and the lower die are buckled, protrusions are arranged on the opposite surfaces of the upper die and the lower die, and the protrusions are consistent with the through holes in number and shape.
Further, there is provided a preferred embodiment wherein there are 20 through holes in each of the upper and lower preforms.
Further, a preferred embodiment is provided, wherein the through hole is square.
Further, there is provided a preferred embodiment wherein the upper and lower preforms are each of elongated configuration.
Further, there is provided a preferred embodiment wherein the upper and lower preforms are each of flat plate construction.
Further, there is provided a preferred embodiment wherein the upper and lower preforms are each arcuate in configuration.
Further, there is provided a preferred embodiment wherein the upper preform and the lower preform are provided with positioning holes at positions where they are in contact.
Further, there is provided a preferred embodiment wherein the number of the positioning holes is ten, and the positioning holes are uniformly distributed at the contact positions of the upper preform and the lower preform.
Further, there is provided a preferred embodiment wherein the upper preform and the lower preform are provided with bolt holes at positions where they are in contact.
Based on the same inventive concept, the utility model also provides a composite plate spring, wherein the composite layers of the plate spring are reinforced by reinforcing fibers penetrating through the composite.
Compared with the prior art, the technical scheme provided by the utility model has the following advantages:
the method for enhancing the interlayer strength of the composite plate spring provided by the utility model adopts continuous fibers to enhance the interlayer performance of the composite plate spring, and the process molding method improves the problem of low interlayer bearing capacity of the composite plate spring.
The composite plate spring die provided by the utility model is designed into an upper die, a lower die and an upper and lower preform combination mode, and is simple to disassemble and assemble. When the interlayer continuous fiber reinforcement is completed, the operation is convenient.
According to the composite material plate spring mold provided by the utility model, after the upper and lower preformed blanks mold the composite material, the composite material can be reinforced along the axial direction of the through hole through the reserved through hole, and the interlayer bearing capacity of the composite material plate spring is greatly improved after the product is subjected to interlayer reinforcement.
The composite plate spring die provided by the utility model has the advantage that the cost of the product reinforced by the die is lower than that of a customized three-dimensional woven product.
Is suitable for engineering application and mass production of products.
Drawings
Fig. 1 is a schematic perspective view of a composite plate spring mold according to a first embodiment;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a perspective view of an upper preform provided in accordance with one embodiment;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a bottom view of FIG. 4;
FIG. 7 is a perspective view of a lower preform provided in accordance with the first embodiment;
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a bottom view of FIG. 7;
top, front and bottom views of an upper mold according to the first embodiment are shown in fig. 10;
top, front and bottom views of the lower mold according to the first embodiment are shown in fig. 11;
wherein 1 denotes an upper die, 2 denotes a lower die, 3 denotes an upper preform, 4 denotes a lower preform, 5 denotes a through hole, 6 denotes a protrusion, and 7 denotes a positioning hole.
Detailed Description
In order to make the advantages and benefits of the technical solution provided by the present utility model more apparent, the technical solution provided by the present utility model will now be described in further detail with reference to the accompanying drawings, in which:
embodiment one, described with reference to fig. 1-11, provides a composite leaf spring mold comprising:
an upper die 1, a lower die 2, an upper preform 3 and a lower preform 4;
the upper preform 3 and the lower preform are buckled to form a cavity;
the upper preform 3 and the lower preform are provided with opposite through holes 5;
the shape of the cavity formed after the upper die 1 and the lower die 2 are buckled is consistent with the external shape of the upper preformed blank 3 and the lower preformed blank after being buckled, protrusions 6 are arranged on the opposite surfaces of the upper die 1 and the lower die 2, and the protrusions 6 are consistent with the through holes 5 in number and shape.
After the upper preform 3 and the lower preform 4 are clamped, interlayer performance enhancement is performed at the openings of the upper preform 3 and the lower preform 4, and continuous fibers are adopted to pass through the through holes 5. At each through hole 5, a specific number of fibre reinforcements can be made through the layers, the location and number of openings being determined by calculation.
Specifically, the using method of the composite plate spring die comprises the following steps:
clamping the composite material by using the upper preform 3 and the lower preform 4;
after the die is assembled, the composite material is reinforced through the through holes 5;
after reinforcement, the upper preform 3 and the lower preform 4 are clamped by the upper mold 1 and the lower mold 2.
Specifically, after the interlayer of the preformed product is reinforced, the upper preformed blank 3 and the lower preformed blank 4 after die assembly are integrally placed in the lower die 2, and the protruding small blocks of the lower die 2 are in one-to-one correspondence in the through holes 5 of the lower preformed die through positioning holes 7;
after the upper preform 3 and the lower preform 4 are fixed with the lower die 2, the upper die 1 is fixed with the lower die, and the protrusions 6 in the upper die 1 are in one-to-one correspondence with the through holes 5 in the upper preform 3 through positioning and guiding devices;
after the upper die 1 and the lower die 2 are assembled and clamped with the upper preformed blank 3 and the lower preformed blank 4, pressure can be applied to the upper die 1 and the lower die 2 through a press or a bolt fastener, and meanwhile, pressure is applied to the middle upper preformed blank 3 and the lower preformed blank 4, so that pressure is applied to a composite plate spring product, and the product quality is ensured;
the product is subjected to heat sealing, solidification and demoulding to obtain a finished product; after the upper die 1, the lower die 2, the upper preform 3 and the lower preform 4 are subjected to die clamping by pressure, and the interlayer continuous fibers are reinforced, the porosity of the composite plate spring is low, the surface quality is good, the interlayer performance is greatly improved, and the composite plate spring can be used for vehicles with larger load such as commercial vehicles, heavy trucks and the like.
The position and number of openings of the upper preform 3 and the lower preform 4 are related to the degree of reinforcement between the product layers;
the composite plate spring is of a cambered surface layer plate structure, and the composite material preformed body can be formed by adopting various processes such as winding, laying, hand pasting, RTM and the like. After the plate spring main body is molded in the upper preform 3 and the lower preform 4, interlayer Z-direction continuous fiber reinforcement is performed at the openings designed in the upper preform 3 and the lower preform 4, so that the interlayer bearing capacity of the plate spring is increased, and the bearing efficiency is improved.
The upper preform 3 and the lower preform 4 are connected together through the positioning holes 7 and the bolt holes, so as to fix the fibers in the preform product, prevent the movement of the fibers and further strengthen the layers.
In the second embodiment, the present embodiment is further limited to the composite plate spring mold provided in the first embodiment, and the number of through holes 5 in each of the upper preform 3 and the lower preform is 20.
In the third embodiment, this embodiment is described with reference to fig. 4 to 9, and is further limited to the composite plate spring mold provided in the first embodiment, and the through hole 5 is square.
In a fourth embodiment, this embodiment is further defined by the composite plate spring mold provided in the first embodiment, and the upper preform 3 and the lower preform are each of an elongated structure.
In the fifth embodiment, the present embodiment is further limited to the composite plate spring mold provided in the fourth embodiment, and the upper preform 3 and the lower preform are each of a flat plate structure.
In a sixth embodiment, this embodiment is further defined by a composite plate spring mold according to the fourth embodiment, and the upper preform 3 and the lower preform are each arc-shaped.
The present embodiment is further defined on the composite plate spring mold provided in the first embodiment, and the positioning holes 7 are provided at the contact positions of the upper preform 3 and the lower preform.
In the eighth embodiment, the present embodiment is further defined by a composite plate spring mold provided in the seventh embodiment, and the number of the positioning holes 7 is ten, and the positioning holes are uniformly distributed at the contact position between the upper preform 3 and the lower preform.
In a ninth embodiment, the composite plate spring mold according to any one of the first to eighth embodiments is further defined, wherein bolt holes are provided at positions where the upper preform 3 and the lower preform contact each other.
The tenth and the present embodiments provide a composite plate spring in which the composite layers are reinforced with reinforcing fibers penetrating the composite.
The composite plate spring provided by the embodiment is realized by the composite plate spring die.
The technical solution provided by the present utility model is described in further detail through several specific embodiments, so as to highlight the advantages and benefits of the technical solution provided by the present utility model, however, the above specific embodiments are not intended to be limiting, and any reasonable modification and improvement, reasonable combination of embodiments, equivalent substitution, etc. of the present utility model based on the spirit and principle of the present utility model should be included in the scope of protection of the present utility model.
In the description of the present utility model, reference is made to the preferred embodiments of the utility model, which should not be construed as limiting the scope of the utility model; furthermore, the descriptions of the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "N" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Claims (10)
1. Composite material leaf spring mould, its characterized in that, the mould includes:
an upper die, a lower die, an upper preform, and a lower preform;
the upper preformed blank and the lower preformed blank are buckled to form a cavity;
the upper preform and the lower preform are provided with opposite through holes;
the shape of the cavity formed after the upper die and the lower die are buckled is consistent with the external shape of the upper preformed blank and the lower preformed blank after the upper die and the lower die are buckled, protrusions are arranged on the opposite surfaces of the upper die and the lower die, and the protrusions are consistent with the through holes in number and shape.
2. The composite leaf spring mold of claim 1 wherein there are 20 through holes in each of the upper and lower preforms.
3. The composite leaf spring mold of claim 1 wherein the through holes are square.
4. The composite leaf spring mold of claim 1 wherein the upper and lower preforms are each of elongated configuration.
5. The composite leaf spring mold of claim 4 wherein the upper and lower preforms are each of flat plate construction.
6. The composite leaf spring mold of claim 4 wherein the upper and lower preforms are each arcuate in configuration.
7. The composite leaf spring mold of claim 1 wherein the upper and lower preforms are provided with locating holes at locations where they meet.
8. The composite leaf spring mold of claim 7 wherein there are ten of the alignment holes evenly distributed in the contact between the upper and lower preforms.
9. The composite leaf spring mold of any one of claims 1-8 wherein the upper and lower preforms are provided with bolt holes at locations where they meet.
10. A composite leaf spring, characterized in that the composite layers of the leaf spring are reinforced by reinforcing fibers penetrating the composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320791777.9U CN219600459U (en) | 2023-04-12 | 2023-04-12 | Composite plate spring die and composite plate spring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320791777.9U CN219600459U (en) | 2023-04-12 | 2023-04-12 | Composite plate spring die and composite plate spring |
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| CN219600459U true CN219600459U (en) | 2023-08-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245942A (en) * | 2023-11-02 | 2023-12-19 | 哈尔滨远驰航空装备有限公司 | Composite material airborne component, forming die and forming method |
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- 2023-04-12 CN CN202320791777.9U patent/CN219600459U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117245942A (en) * | 2023-11-02 | 2023-12-19 | 哈尔滨远驰航空装备有限公司 | Composite material airborne component, forming die and forming method |
| CN117245942B (en) * | 2023-11-02 | 2024-04-02 | 哈尔滨远驰航空装备有限公司 | Composite material airborne component, forming die and forming method |
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