Composite material forming device and forming method thereof

Abstract

The present disclosure provides a composite material forming device and a forming method thereof, wherein the composite material forming device comprises: a forming chamber, a clamping plate, a perforated plate and a fiber preform; the clamping plate is fixedly connected to the walls at both ends of the forming chamber; the perforated plate is arranged in the cavity of the forming chamber and is arranged in the forming chamber along a first direction; the fiber preform is passed through the perforated plate, and both ends of the fiber preform are fixedly connected to the walls at both ends of the forming chamber and are clamped between the walls at both ends of the forming chamber and the clamping plate. The present disclosure can accurately position the fiber preform in the forming chamber, and can simulate fiber preforms of different structural forms by designing the position, arrangement and angle of the holes on the perforated plate, thereby avoiding the equipment adjustment investment required for studying different fiber reinforced structures, reducing the development cost of new materials, and shortening the development cycle.

Description

Technical Field

[0001] The present disclosure relates to the field of power equipment, and in particular to a composite material molding device and a molding method thereof. Background Art

[0002] Composite materials are made of two or more materials with different properties, generally including matrix materials and fiber reinforcement materials (usually fiber materials), and the fiber reinforcement materials and matrix materials are bonded through interfaces. Composite structures and material properties have the advantage of being designable. Fiber reinforcement materials are dispersed in the matrix material according to certain design requirements through artificial methods. By changing the arrangement and spatial orientation of fiber reinforcement materials (such as fibers), the comprehensive performance of materials and structures can be significantly affected. At present, the methods for studying the influence of fiber reinforcement materials (such as fibers) on the performance of composite materials include numerical simulation calculations and experimental verification methods. The numerical simulation method has low calculation accuracy for composite materials and there is a large difference with the actual situation. In terms of experiments, many current structures cannot accurately realize the designed structural form, which further limits the further research of materials.

[0003] At present, the domestic methods for studying the influence of different fiber arrangements and morphologies on the mechanical properties of the matrix are relatively simple. They mainly involve manufacturing the fiber-reinforced material into a prefabricated fiber braid (fiber-reinforced structure) in advance, then adding the matrix material (such as matrix material or liquid material), and conducting performance testing research after the matrix material is cured. At this time, the prefabricated fiber braid formed by the fiber-reinforced material is more different from the expected morphology before forming, making it impossible to complete accurate corresponding analysis, which introduces additional errors.

[0004] In addition, the fiber arrangement and density have an important influence on the material strength after it is combined with the matrix material. However, in the actual development process, a large number of material structures need to be designed and woven to verify the above performance. The weaving of fiber structures requires special equipment, and when it is used to manufacture woven fabrics of different specifications, the special equipment needs to be frequently adjusted, which results in high costs in the development process and a long cycle, which seriously affects the progress of new material development. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The present disclosure provides a composite material forming device and a forming method thereof to solve the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] According to one aspect of the present disclosure, there is provided a composite material forming device, comprising:

[0009] The molding cabin is a cavity structure;

[0010] A clamping plate fixedly connected to the walls at both ends of the molding chamber;

[0011] a perforated plate, arranged in the molding chamber cavity and arranged in the molding chamber along a first direction; the first direction is the direction of a line connecting two ends of the molding chamber; and

[0012] The fiber preform is passed through the orifice plate, and both ends of the fiber preform are fixedly connected to the walls at both ends of the molding chamber and clamped between the walls at both ends of the molding chamber and the clamping plate.

[0013] In some embodiments of the present disclosure, it further includes:

[0014] The sensor is connected to the wall of the molding chamber and is used to detect the pressure and temperature of the molding chamber cavity.

[0015] In some embodiments of the present disclosure, it further includes:

[0016] The cover plate is arranged on the opening and is movably connected with the wall body on the side of the molding chamber; the opening is arranged on the wall body on the side of the molding chamber.

[0017] In some embodiments of the present disclosure, the number of the orifice plates is m, where m≥1; when m=1, the distances between the orifice plates and the walls at both ends of the forming chamber are equal and / or unequal; when m>1, the distances between any two adjacent orifice plates are equal and / or unequal.

[0018] In some embodiments of the present disclosure, the orifice plate is perpendicular to the axis of the molding chamber in the first direction; or

[0019] The orifice plate forms an angle with the axis of the molding chamber in the first direction.

[0020] In some embodiments of the present disclosure, the orifice plate is provided with through holes, and the fiber preform passes through the through holes provided on the orifice plate; the number of the through holes provided on each orifice plate is n, wherein n≥1.

[0021] In some embodiments of the present disclosure, the axis of the via hole is perpendicular to the surface where the orifice plate is located; or there is an angle between the axis of the via hole and the surface where the orifice plate is located.

[0022] In some embodiments of the present disclosure, including:

[0023] A perforated plate is installed inside the molding chamber, and the fiber preform is fixed on the guide pin. The guide pin drives the fiber preform to pass through the through hole set on the perforated plate. The guide pin is removed, and the two ends of the fiber preform are fixedly connected to the wall bodies at the two ends of the molding chamber, so as to form a fiber preform space network structure inside the molding chamber;

[0024] Installing clamping plates on the walls at both ends of the molding chamber, and sandwiching the fiber preform between the walls at both ends of the molding chamber and the clamping plates; and

[0025] The matrix material is filled in the molding chamber cavity until a preset capacity is reached to form a composite material in the composite material molding device.

[0026] In some embodiments of the present disclosure, after the matrix material is filled in the molding chamber cavity until a preset capacity is reached, before the composite material is formed in the composite material molding device, the method further includes:

[0027] Covering the mold with a cover plate, and applying a predetermined pressure to the matrix material in the molding chamber cavity through the cover plate; and

[0028] The sensor detects the internal parameters of the molding chamber cavity.

[0029] In some embodiments of the present disclosure, the matrix material includes an organic material and an inorganic material; the matrix material includes a paste, a gel or a powder.

[0030] (III) Beneficial effects

[0031] It can be seen from the above technical solutions that the composite material forming device and forming method disclosed herein have at least one or part of the following beneficial effects:

[0032] (1) The present invention can accurately position the fiber preform in the molding chamber, avoiding the introduction of additional errors in the precise analysis of the material due to the liquid or powder matrix material disrupting the fiber preform structure during the process of filling the molding chamber, thereby improving the accuracy of material molding.

[0033] (2) The present invention realizes different spatial structural arrangements of fiber preforms by arranging and combining, translating and flipping the orifice plates, and adjusting the arrangement and combination and angle of the through holes, thereby avoiding the equipment adjustment investment required for studying different fiber reinforced structures, reducing the development cost of new materials, shortening the development cycle, and being able to meet actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of a composite material forming device according to an embodiment of the present invention.

[0035] Figure 2 It is a schematic top view of a composite material forming device according to an embodiment of the present invention.

[0036] Figure 3 It is a cross-sectional view of the composite material forming device according to an embodiment of the present invention along the line AA.

[0037] Figure 4 It is a BB cross-sectional view of the composite material forming device according to an embodiment of the present invention.

[0038] Figure 5 Schematic diagram of fiber distribution and fixation of a composite material molding device according to an embodiment of the present invention.

[0039] Figure 6 Schematic diagram of the orifice plate structure of the composite material forming device according to an embodiment of the present invention.

[0040] Figure 7 It is a schematic cross-sectional view of a via structure in a perforated plate structure of a composite material forming device according to an embodiment of the present invention.

[0041] Figure 8 Schematic diagram of a composite material molding method according to an embodiment of the present invention.

[0042] Fig. 9 Schematic diagram of the insertion of guide pins in the composite material forming device according to an embodiment of the present invention.

[0043] [Description of the main component symbols of the embodiment of the present disclosure in the accompanying drawings]

[0044] 1- Molding cabin;

[0045] 2-well plate;

[0046] 21- vias;

[0047] 3- Clamping plate;

[0048] 4- Fasten the screws;

[0049] 5-cover plate;

[0050] 6- Sensor;

[0051] 7-fiber preform;

[0052] 8-base material;

[0053] 9-Introduction of needle. DETAILED DESCRIPTION

[0054] The present disclosure provides a composite material forming device and a forming method thereof, wherein the composite material forming device comprises: a forming chamber, a clamping plate, a perforated plate and a fiber preform; the clamping plate is fixedly connected to the walls at both ends of the forming chamber; the perforated plate is arranged in the cavity of the forming chamber and is arranged in the forming chamber along a first direction; the fiber preform is passed through the perforated plate, and both ends of the fiber preform are fixedly connected to the walls at both ends of the forming chamber and are clamped between the walls at both ends of the forming chamber and the clamping plate. The present disclosure can accurately position the fiber preform in the forming chamber, avoid the equipment adjustment investment required for studying different fiber reinforced structures, reduce the development cost of new materials, and shorten the development cycle.

[0055] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0056] Certain embodiments of the present disclosure will be described more fully below with reference to the accompanying drawings, some but not all of which are shown. In fact, the various embodiments of the present disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure satisfies applicable legal requirements.

[0057] In an exemplary embodiment of the present disclosure, a composite material molding device is provided. Figure 1 Schematic diagram of a composite material forming device according to an embodiment of the present invention. Figure 1 As shown, the composite material molding device disclosed in the present invention comprises: a molding cabin 1, a perforated plate 2, a clamping plate 3, a fastening screw 4, a cover plate 5, a sensor 6 and a fiber preform 7.

[0058] The clamping plate 3 is fixedly connected to the walls at both ends of the molding chamber 1; the orifice plate 2 is arranged in the cavity of the molding chamber 1 and is arranged in the molding chamber 1 along a first direction. The first direction is the direction of the line connecting the two ends of the molding chamber.

[0059] The fiber preform 7 punctures the through hole 21 on the perforated plate 2 to form a set fiber arrangement structure, and then the fiber preform 7 is fixed by the clamping plates 3 at both ends so that the position of the fiber preform 7 does not change during the powder laying or resin filling process, thereby ensuring the molding accuracy of the fiber preform 7 arrangement structure.

[0060] The fiber preform 7 is, for example, carbon fiber, glass fiber, etc., which are not listed one by one.

[0061] An opening is provided on the wall of the side of the molding chamber 1, and the cover plate 5 is provided on the opening. The solidified powder is filled into the composite material forming device and compacted by the top cover plate 5. The cover plate 5 is movably connected to the wall of the side of the molding chamber 1, and the cover plate 5 can move freely to provide different pressures for the molding of the composite material.

[0062] The composite material forming device is placed in a heating furnace or other heating unit. The sensor 6 is connected to the wall of the forming chamber 1 to detect the temperature, pressure, humidity and other conditions in the cavity of the forming chamber. After the structure is cured, performance testing of the fiber arrangement structure is carried out to obtain a material structure form whose strength, stiffness and impact resistance meet the design requirements.

[0063] Figure 2 Schematic diagram of a top view of a composite material forming device according to an embodiment of the present invention. Figure 1 and Figure 2As shown, a plurality of orifice plates 2 are designed and inserted at both ends of the molding chamber 1 and inside the cavity, and the fiber-reinforced material 7 passes through the orifice plates 2 and forms different arrangements and combinations in the cavity of the molding chamber 1. The walls at both ends of the molding chamber 1 are fitted and clamped by clamping plates 3 and fixed by fastening screws 4. The cover plate 5 arranged on the top of the molding chamber 1 applies the necessary pressure required for molding the base material 8. A sensor 6 is arranged inside the cavity of the molding chamber 1 to monitor the changes in parameters such as temperature and pressure in the molding chamber 1 to ensure the accurate molding of the base material 8.

[0064] Figure 3 It is a cross-sectional view of the composite material forming device according to an embodiment of the present invention along the line AA. Figure 4 FIG. 2 is a BB cross-sectional view of a composite material forming device according to an embodiment of the present invention. Figure 3 and Figure 4 As shown, the interaction between the matrix material 8 and the fiber reinforced structure in the molding chamber 1. The two ends of the fiber reinforced material 7 are fixed by the clamping plate 3, so the position and structure of the fiber reinforced material 7 in the molding chamber 1 are precisely defined. The matrix material 8 is filled in the cavity of the molding chamber 1 and fills the pores of the fiber reinforced structure composed of the fiber reinforced material 7, which is used to finally form the matrix part of the composite material. The sensor 6 can be set in the matrix material 8 filled in the composite material molding device.

[0065] Figure 5 Schematic diagram of fiber distribution and fixation of composite material forming device according to an embodiment of the present invention. Figure 5 As shown, the orifice plate 2 structure can be translated (direction as Figure 5 As shown, it is not limited to translation along the first direction (such as direction A in the figure), but can also be translated along the directions shown in directions B and D in the figure) and flipped to achieve different spatial positioning capabilities for the fiber-reinforced material 7.

[0066] In Example 1, only one orifice plate 2 is provided, and the orifice plate 2 is perpendicular to the axis of the molding chamber 1 in the first direction (the direction of the line connecting the two ends of the molding chamber, such as direction A in the figure), then the distance between the orifice plate 2 and the wall at one end of the molding chamber 1 is equal to the distance between the orifice plate 2 and the wall at the other end of the molding chamber 1.

[0067] In Example 2, only one orifice plate 2 is provided, and the orifice plate 2 is adjusted to form an angle with the axis of the molding chamber 1 in the first direction by flipping (as shown in the direction C in the figure), and the distance between the orifice plate 2 and the wall at one end of the molding chamber 1 is not equal to the distance between the orifice plate 2 and the wall at the other end of the molding chamber 1.

[0068] In Example 3, two or more orifice plates 2 are provided, and the distance between the orifice plate 2 and one end wall of the molding chamber 1 and the distance between two adjacent orifice plates 2 can be adjusted by translating the orifice plate 2 to move it along the first direction (the direction of the line connecting the two ends of the molding chamber, such as direction A in the figure).

[0069] In Example 4, the orifice plates 2 are flipped over based on Example 3. The flipping directions of the plurality of orifice plates 2 may be consistent or inconsistent, and the flipping directions are adjusted according to the fiber reinforced structure to be obtained.

[0070] Figure 6 Schematic diagram of the orifice plate structure of the composite material forming device according to the embodiment of the present invention. Figure 6 As shown, the structure of the orifice plate 2 can be realized by different spatial positions and arrangements of the vias on its surface, such as Figure 6 (a) and (b) are two orifice plates 2 with different spatial positions and arrangements to achieve the molding capability for different fiber-reinforced material structures.

[0071] Figure 7 FIG. 1 is a schematic cross-sectional view of a through-hole structure in a hole plate structure of a composite material forming device according to an embodiment of the present invention. Figure 7 As shown, the structure of the orifice plate 2 can achieve contact between the fiber reinforcement material 7 and the orifice plate 2 through different via structures on its surface. For example, the via diameters are different, the axis of the via is perpendicular to the surface of the orifice plate, and there is an angle between the axis of the hole and the surface of the orifice plate.

[0072] Specifically, the edge of the through hole contacting the orifice plate 2 is designed with a rounded corner to avoid friction between the fiber-reinforced material 7 and the orifice plate 2, thereby improving the service life of the material and the accuracy of testing the mechanical properties.

[0073] This structure can be used not only in the research of fiber arrangement design structure of fiber reinforced organic materials, but also in the structural research of fiber reinforced inorganic materials. The sensor 6 can accurately obtain the internal temperature and pressure of the material.

[0074] In an exemplary embodiment of the present disclosure, a composite material molding method is provided. Figure 8 FIG. 1 is a schematic diagram of a composite material forming method according to an embodiment of the present invention. Figure 8 As shown, the composite material forming method disclosed herein comprises:

[0075] S1: Install the orifice plate inside the molding chamber, and fix the fiber preform on the guide pin (such as Fig. 9 As shown), the lead pin drives the fiber preform to pass through the through hole set on the orifice plate, and the lead pin is removed. The two ends of the fiber preform are fixedly connected to the walls at both ends of the molding chamber, forming a fiber preform space network structure inside the molding chamber.

[0076] S2: Clamping plates are installed on the walls at both ends of the molding chamber, and the fiber preform is clamped between the walls at both ends of the molding chamber and the clamping plates. The fiber preform is designed with different solutions of the orifice plate to form different fiber spatial distribution forms, such as adjusting the spacing of the orifice plate, the angle of the orifice plate, the distribution of the through holes on the orifice plate, the angle of the through holes passing through the orifice plate, etc., to form a spatial three-dimensional structure composed of the fiber preform.

[0077] S3: Filling the molding chamber cavity with matrix material until the preset capacity is reached.

[0078] Specifically, the molding chamber is filled with a matrix material, which may be a powder material or a liquid resin material, which will not be listed here one by one. The molding chamber is filled with the matrix material to a predetermined height, which may generally be 1 mm-100 mm.

[0079] S4: Cover the cover plate and apply a predetermined pressure to the base material in the molding chamber cavity through the cover plate. The predetermined pressure is generally set to the pressure required for material molding, under which the stress deformation of the molding chamber meets the design requirements. The base material in the molding chamber cavity can also be heated through the top cover plate.

[0080] S5: The sensor detects the internal parameters of the molding chamber cavity and forms the composite material in the composite material molding device, such as Fig. 9 The internal parameters include temperature, pressure, humidity, dimensional strain, etc., but are not limited thereto. In order to facilitate the formation of composite materials as parameter setting targets, they are not listed one by one here.

[0081] So far, the embodiments of the present disclosure have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0082] According to the above description, those skilled in the art should have a clear understanding of the composite material forming device and forming method disclosed herein.

[0083] In summary, the present disclosure provides a composite material molding device and a molding method thereof, which can accurately position the fiber-reinforced material in the molding chamber, avoid the equipment adjustment investment required for studying different fiber-reinforced structures, reduce the development cost of new materials, and shorten the development cycle.

[0084] It should also be noted that the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "back", "left", "right", etc., are only reference directions of the drawings and are not intended to limit the scope of protection of the present disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure.

[0085] Moreover, the shapes and sizes of the components in the figures do not reflect the real size and proportion, but only illustrate the contents of the embodiments of the present disclosure. In addition, in the claims, any reference symbols between brackets shall not be constructed as limiting the claims.

[0086] Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

[0087] In addition, unless the steps are specifically described or must occur in sequence, the order of the above steps is not limited to the above list, and can be changed or rearranged according to the required design. And the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0088] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various disclosed aspects, in the above description of the exemplary embodiments of the present disclosure, the various features of the present disclosure are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the following intention: the claimed disclosure requires more features than the features explicitly recited in each claim. More specifically, as reflected in the claims below, the disclosed aspects are less than all the features of the single embodiment disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present disclosure.

[0089] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above description is only a specific embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A composite material molding device, comprising: The molding cabin is a cavity structure; A clamping plate fixedly connected to the walls at both ends of the molding chamber; a perforated plate, arranged in the molding chamber cavity, and arranged in the molding chamber along a first direction; the first direction is the direction of a line connecting two ends of the molding chamber; A fiber preform is passed through the orifice plate, and two ends of the fiber preform are fixedly connected to the walls at two ends of the molding chamber and clamped between the walls at two ends of the molding chamber and the clamping plate; and A cover plate is arranged on the opening and is movably connected to the wall body on the side of the molding chamber; the opening is arranged on the wall body on the side of the molding chamber; Wherein, the orifice plate forms an angle with the axis of the molding chamber in the first direction; The orifice plate is provided with a through hole, and the fiber preform is passed through the through hole provided on the orifice plate; There is an angle between the axis of the through hole and the surface where the orifice plate is located.

2. The composite material forming device according to claim 1, wherein: Also includes: The sensor is connected to the wall of the molding chamber and is used to detect the pressure and temperature of the molding chamber cavity.

3. The composite material forming device according to claim 1, wherein: The number of the orifice plates is m, where m≥1; When m=1, the distances between the orifice plate and the walls at both ends of the molding chamber are equal or unequal; When m>1, the distance between any two adjacent orifice plates is equal or unequal.

4. The composite material forming device according to claim 1, wherein: The number of the through holes arranged on each of the orifice plates is n, wherein n≥1.

5. A molding method using the composite material molding device according to any one of claims 1 to 4, comprising: A perforated plate is installed inside the molding chamber, and the fiber preform is fixed on the guide pin. The guide pin drives the fiber preform to pass through the through hole set on the perforated plate. The guide pin is removed, and the two ends of the fiber preform are fixedly connected to the wall bodies at the two ends of the molding chamber, so as to form a fiber preform space network structure inside the molding chamber; Install clamping plates on the walls at both ends of the molding chamber, and sandwich the fiber preform between the walls at both ends of the molding chamber and the clamping plates; as well as Filling the molding chamber cavity with a matrix material until a preset capacity is reached, covering it with a cover plate, and applying a predetermined pressure to the matrix material in the molding chamber cavity through the cover plate to form a composite material in a composite material molding device; Wherein, the orifice plate forms an angle with the axis of the molding chamber in the first direction; There is an angle between the axis of the through hole and the surface where the orifice plate is located.

6. The molding method according to claim 5, wherein: After the matrix material is filled in the molding chamber cavity until the preset capacity is reached, before the composite material is formed in the composite material molding device, the method further includes: The sensor detects the internal parameters of the molding chamber cavity.

7. The molding method according to claim 5, wherein: The matrix material includes organic material and inorganic material; the matrix material includes paste, gel or powder.

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