Composite material cabin plate forming process and square cabin body

Abstract

The invention discloses a composite material cabin plate forming process and a square cabin body. According to the composite material cabin plate forming technology, a cabin plate comprises a skin and a framework, the skin forming technology comprises the step that the skin is subjected to vacuumizing pressing forming through a first mold and a second mold, and the framework forming technology comprises the step that the framework is subjected to vacuum bag pressing forming, the framework is machined after forming, the surface flatness is improved, and a first assembling face is formed on the framework; and a second assembling face is formed on the skin, the second assembling face is attached to the first assembling face and adheres to the first assembling face, the skin and the framework are subjected to hot press forming after being adhesively bonded, and the cabin plate is formed. According to the composite material cabin plate forming process, the surface flatness of the skin and the framework can be improved, particularly, the flatness requirement can be met without machining after the skin is pressed and formed, the machining steps are reduced, and the forming quality can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of material forming technology, and more specifically, to a composite cabin panel forming technology and a cabin body. Background Art

[0002] The commonly used composite cabin panels currently use a vacuum bagging adsorption molding process in the molding process, and vacuum bagging adsorption molding is performed on the composite skin and the composite frame respectively. Since the woven bags used for vacuum bagging have textures during the molding process, the surfaces of the skin and the frame are uneven and have textures after molding. Therefore, when the cabin panels are molded, the skin and the frame are crimped together. Due to the uneven surfaces of the frame and the skin, the surface of the cabin panels after molding is uneven, thereby reducing the flatness index of the cabin panels. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention innovatively provides a composite cabin panel forming process and a cabin body, which can solve the technical problem of uneven cabin panels in the prior art.

[0004] In order to achieve the above technical objectives, the first aspect of the present invention discloses a composite material cabin panel forming process, the cabin panel comprises a skin and a frame, wherein:

[0005] The skin forming process comprises the following steps: the skin is formed by vacuum pressing through a first mold and a second mold,

[0006] The skeleton forming process includes forming the skeleton by vacuum bag pressing, and machining the skeleton after forming to improve the surface flatness.

[0007] The frame is formed with a first assembly surface, the skin is formed with a second assembly surface, and the second assembly surface is attached to and bonded to the first assembly surface.

[0008] The skin is bonded to the frame and then hot pressed to form the cabin panel.

[0009] Furthermore, the skin forming process includes:

[0010] The resin is soaked into each component layer of the skin by brushing glue.

[0011] Then the constituent layers are laid layer by layer on the first mold, and then the second mold is placed on the constituent layers.

[0012] A vacuum operation is performed between the first mold and the second mold, so that the first mold and the second mold press-form the plurality of constituent layers to form the skin, and any side of the skin can be used as the second assembly surface.

[0013] Further, both the first mold and the second mold are fiberglass flat molds, and the surfaces of the first mold and the second mold that contact the skin are both flat surfaces.

[0014] Further, the skeleton forming process includes setting a processing layer on the surface of the skeleton that contacts the vacuum bag, and the processing layer is integrally compression molded with the skeleton.

[0015] Further, a pressing flat plate is arranged between the vacuum bag and the processing layer, and the vacuum bag presses the processing layer through the pressing flat plate.

[0016] Further, after the skeleton is compression molded, the processing layer is milled to form the first assembly surface on the processing layer.

[0017] Further, the hollow part of the skeleton is filled with a foam board, and the thickness of the foam board is the same as the thickness of the skeleton.

[0018] Clean the first assembly surface and the second assembly surface, apply structural adhesive on the first assembly surface, and apply large panel adhesive on the bonding surface of the foam board.

[0019] Attach the skin to the skeleton, and bond the second assembly surface to the first assembly surface and the bonding surface.

[0020] Further, the skin is fixed to the skeleton by self-tapping screws.

[0021] In the second aspect of the present invention, a cabin body of a mobile cabin is disclosed, including a cabin board formed by the above-mentioned composite material cabin board forming process.

[0022] The beneficial effects of the present invention are as follows:

[0023] The composite material cabin board forming process provided by the present invention can improve the surface flatness of the skin and the skeleton. In particular, after the skin is compression molded, it can meet the flatness requirements without machining, reducing the processing steps and ensuring the forming quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Showing an exploded structural schematic diagram of a composite material cabin board;

[0025] Figure 2 Showing a schematic diagram of skin pressing in an embodiment of the present invention;

[0026] Figure 3 Showing a schematic diagram of the skeleton structure in an embodiment of the present invention;

[0027] Figure 4 Showing a schematic diagram of the structure of the pressing flat plate in an embodiment of the present invention;

[0028] Figure 5 Exploded structural schematic diagram of the framework of an embodiment of the present invention (including a pressing plate);

[0029] Figure 6 Schematic diagram of the framework pressing of an embodiment of the present invention.

[0030] In the figure,

[0031] 1. Skin; 2. Framework; 21. Processing layer; 22. Pressing plate; 3. Foam board; 41. First mold; 42. Second mold; 5. Vacuum bag. Detailed implementation mode

[0032] The following combines the description drawings of the specification to give a detailed explanation and description of the composite material cabin panel forming process and the cabin body of the shelter provided by the present invention.

[0033] By analyzing the structure of the composite material cabin panel, on the basis of realizing the lightweight of the cabin panel, the present invention optimizes the forming methods of the composite material skin and the framework, improves the surface flatness of the skin and the framework, and ensures that during the pressing and forming process of the composite material cabin panel, due to the flat butt joint bonding surface of the skin and the framework, the tight and flat bonding of the skin and the framework is realized, thereby improving the flatness of the surface of the formed composite material cabin panel.

[0034] The composite material cabin panel forming process provided by the present invention can improve the surface flatness of the skin and the framework. In particular, after the skin is pressed and formed, it can meet the flatness requirements without machining, reducing the processing steps and ensuring the forming quality. The following introduces the present invention in detail with specific embodiments:

[0035] In some embodiments, the present invention provides a composite material cabin panel forming process for processing the composite material shelter cabin panel. As Figure 1 shown, the composite material cabin panel generally mainly consists of an inner and outer skin 1, a framework 2 and a foam board 3. The foam board 3 is mainly placed inside the framework 2. When the skin 1 and the framework 2 are pressed and bonded to form, after the foam board 3 is compressed by pressure, it is mainly the framework 2 that plays a supporting role. Optionally, the framework 2, the skin 1 and the foam board 3 are all made of composite materials to realize the lightweight of the cabin panel.

[0036] The composite material cabin panel forming process includes a skin 1 forming process and a framework 2 forming process. Among them, the skin 1 is formed by vacuum pressing. Specifically, as Figure 2As shown in the figure, the forming process of the skin 1 includes forming the skin 1 by vacuum pressing with the first mold 41 and the second mold 42; the forming process of the framework 2 includes forming the framework 2 by pressing with a vacuum bag 5, and after forming, machining the framework 2 to improve the surface flatness. A first assembly surface is formed on the framework 2, and a second assembly surface is formed on the skin 1. The second assembly surface is attached to the first assembly surface and bonded, and after the skin 1 and the framework 2 are bonded, hot pressing is performed to form a cabin panel.

[0037] In some embodiments, the forming process of the skin 1 includes: soaking each constituent layer of the skin 1 by brushing glue to soak the resin, then laying the constituent layers on the first mold 41 layer by layer, then placing the second mold 42 on the constituent layers, and performing a vacuum operation between the first mold 41 and the second mold 42, so that the first mold 41 and the second mold 42 press and form the multiple constituent layers to form the skin 1. Optionally, both the first mold 41 and the second mold 42 are fiberglass flat molds, the surfaces of the first mold 41 and the second mold 42 in contact with the skin 1 are both flat surfaces, and any surface of the skin 1 can be used as the second assembly surface without the need for further machining to achieve the required surface flatness.

[0038] In some embodiments, as Figure 3 shown, the forming process of the framework 2 includes setting a processing layer 21 on the surface of the framework 2 in contact with the vacuum bag 5. The processing layer 21 is integrally formed with the framework 2 by pressing. After pressing and forming, the processing layer 21 can be milled by a machine tool to achieve the required flatness. The setting of the processing layer 21 can ensure the thickness of the framework 2 and does not damage the continuity of the composite material in the framework 2. Optionally, the processing layer 21 and the framework 2 are made of the same composite material, which is pre-processed and then integrally pressed with the framework 2.

[0039] Optionally, as Figure 4 、 Figure 5 、 Figure 6 shown, a pressing flat plate 22 is arranged between the vacuum bag 5 and the processing layer 21. The pressing flat plate 22 is made of epoxy resin, has a certain strength, and is reusable. The vacuum bag 5 presses the processing layer 21 through the pressing flat plate 22, which can avoid the direct contact between the vacuum bag 5 and the framework 2, thereby avoiding the formation of the texture of the vacuum bag 5 on the framework 2 and improving the surface flatness of the framework 2.

[0040] Furthermore, after the framework 2 is pressed and formed, the processing layer 21 is milled to form a first assembly surface on the processing layer 21. Optionally, the lower mold for vacuum pressing of the framework 2 is a fiberglass mold, and a flat surface is formed on the other side of the framework 2. After pressing and forming, no further machining is required to meet the flatness requirement, and first assembly surfaces are formed on both sides of the framework 2.

[0041] In some embodiments, the assembly process of the cabin board includes: filling the hollow part of the framework 2 with a foam board 3 and making the thickness of the foam board 3 consistent with that of the framework 2. Clean the first assembly surface on the framework 2 and the second assembly surface on the skin 1, apply structural adhesive on the first assembly surface, and apply large panel adhesive on the bonding surface of the foam board 3. Then attach the skin 1 to the framework 2 so that the second assembly surface is bonded to the first assembly surface and the bonding surface, that is, cover one skin 1 on each side of the framework 2 and attach it to the framework 2. Optionally, the skin 1 is fixed to the framework 2 with self-tapping screws to prevent the skin 1 from shifting during the hot pressing process. Then place the bonded framework 2 and skin 1 structure in a large panel press, perform high-temperature pressing and forming through the large panel press, and clean the overflowing glue after forming.

[0042] In some embodiments, the present invention also provides a shelter cabin body. The cabin board of the cabin body is the cabin board processed and formed by the above composite material cabin board forming process, which can make the cabin body achieve lightweight.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and defined, the terms "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the description of this specification, the descriptions referring to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present invention shall be included within the protection scope of the present invention.

Claims

1. A composite material cabin panel forming process, characterized in that: The cabin panel includes skin and frame, among which: The skin forming process comprises the following steps: the skin is formed by vacuum pressing through a first mold and a second mold, The skeleton forming process includes forming the skeleton by vacuum bag pressing, and machining the skeleton after forming to improve the surface flatness. The frame is formed with a first assembly surface, the skin is formed with a second assembly surface, and the second assembly surface is attached to and bonded to the first assembly surface. The skin is bonded to the frame and then hot pressed to form the cabin panel.

2. The composite cabin panel forming process according to claim 1, characterized in that: The skin forming process comprises: The resin is soaked into each component layer of the skin by brushing glue. Then the constituent layers are laid layer by layer on the first mold, and then the second mold is placed on the constituent layers. A vacuum operation is performed between the first mold and the second mold, so that the first mold and the second mold press-form the plurality of constituent layers to form the skin, and any side of the skin can be used as the second assembly surface.

3. The composite cabin panel forming process according to claim 2, characterized in that: The first mold and the second mold are both glass fiber reinforced plastic flat molds, and the surfaces of the first mold and the second mold that are in contact with the skin are both flat.

4. The composite cabin panel forming process according to claim 2, characterized in that: The skeleton forming process includes arranging a processing layer on the surface of the skeleton in contact with the vacuum bag, and the processing layer and the skeleton are integrally pressed and formed.

5. The composite cabin panel forming process according to claim 4, characterized in that: A pressing plate is arranged between the vacuum bag and the processing layer, and the vacuum bag presses the processing layer through the pressing plate.

6. The composite cabin panel forming process according to claim 4 or 5, characterized in that: After the frame is press-formed, the processing layer is milled to form the first assembly surface on the processing layer.

7. The composite cabin panel forming process according to claim 5, characterized in that: The hollow part of the frame is filled with a foam board, and the thickness of the foam board is consistent with the thickness of the frame. Clean the first assembly surface and the second assembly surface, apply structural adhesive on the first assembly surface, and apply large board adhesive on the bonding surface of the foam board. The skin is attached to the frame so that the second assembly surface is bonded to the first assembly surface and the bonding surface.

8. The composite cabin panel forming process according to claim 7, characterized in that: The skin is fixed on the frame by self-tapping screws.

9. A shelter cabin, characterized in that: A cabin panel formed by the composite cabin panel forming process according to any one of claims 1 to 8.

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