Mold for vacuum bag process

Abstract

The utility model provides a mold for a vacuum bag process, and relates to the technical field of composite material glass fiber reinforced plastic product forming. The mold comprises a mold body, a positioning block, a positioning column and a positioning plate, wherein the mold body comprises a variable thickness area; the positioning block is embedded into the variable-thickness area, the surface of the positioning block is flush with the molded surface of the variable-thickness area, and a positioning hole is formed in the positioning block; one end of the positioning column extends into the positioning hole, and the other end of the positioning column extends towards one side deviating from the mold body; the positioning plate is provided with a through hole for the positioning column to penetrate through, the positioning column is sleeved with the through hole, the shape of the positioning plate is consistent with the profile of the thickness-variable area, and the peripheral contour of the positioning plate is consistent with the contour of the thickness-variable area.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material glass fiber reinforced plastic product molding, in particular to a mold used in a vacuum bag process. Background Art

[0002] In the fields of aerospace, automobile manufacturing, wind power generation, etc., glass fiber composite materials are widely used due to their light weight, high strength, corrosion resistance and other characteristics. The vacuum bag process is one of the important technologies for composite material molding: by laying multiple layers of fiber cloth on the mold, resin is infused in a vacuum environment, and the resin is solidified and formed under certain curing conditions. In some specific application scenarios, such as when structural parts need to withstand complex stresses or need to optimize weight distribution, it is often necessary to introduce thinning or thickening areas in the product design. Precise control of the laying position of each layer of fiber cloth, especially the positioning of the thinning area / thickening area, is crucial to ensuring the final performance of the product. Traditional layer positioning methods rely heavily on manual experience and marking, which are prone to errors and inefficiency, and can easily lead to problems such as misalignment between layers and uneven thickness. Utility Model Content

[0003] In view of the above problems existing in the prior art, the utility model provides a mold for a vacuum bag process to improve the problems of inter-layer misalignment and uneven thickness during the preparation of glass fiber composite materials.

[0004] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present invention provides a mold for a vacuum bag process, wherein the mold includes a mold body, a positioning block, a positioning column and a positioning plate, the mold body including a variable thickness area; the positioning block is embedded in the variable thickness area, the surface of the positioning block is flush with the profile of the variable thickness area, and a positioning hole is provided on the positioning block; one end of the positioning column extends into the positioning hole, and the other end extends to the side away from the mold body; a through hole is provided on the positioning plate for the positioning column to pass through, the through hole is mounted on the positioning column, the shape of the positioning plate is consistent with the profile of the variable thickness area, and the edge contour of the positioning plate is consistent with the contour of the variable thickness area.

[0005] In one embodiment of the present invention, the positioning block is cylindrical.

[0006] In an embodiment of the present invention, the mold body is fixedly connected to the positioning block.

[0007] In one embodiment of the present invention, the variable thickness area includes any one or both of a thinning area and a thickening area.

[0008] In one embodiment of the present invention, the positioning plate is a steel plate.

[0009] In one embodiment of the present invention, the positioning plate is a glass fiber reinforced plastic plate.

[0010] In one embodiment of the present invention, the variable thickness area is provided with at least two positioning blocks.

[0011] In an embodiment of the present invention, the positioning block is pluggably connected to the positioning post.

[0012] The mold for the vacuum bag process of the utility model is provided with a positioning block on the mold body, and the positioning column is inserted into the positioning hole of the positioning block, and a positioning plate is mounted on the positioning column, and the shape of the positioning plate is consistent with the profile of the mold body. When laying the layers, the fiber cloth in the variable thickness area is cut along the edge of the positioning plate, and the fiber cloth in the variable thickness area can be accurately positioned to improve product consistency. The operation process is simplified, production efficiency is improved, and production costs are reduced. Furthermore, after the layers are laid, the positioning plate is placed on the surface of the layers and poured together with the layers, which can ensure that the inner and outer surfaces of the obtained composite material in the variable thickness area are flat and the thickness is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic structural diagram of a mold for a vacuum bag process according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic structural diagram of a mold body in one embodiment of a mold for a vacuum bag process according to the present invention;

[0016] Figure 3 This is a schematic diagram of the cooperation between the mold body and the positioning block in one embodiment of the mold for the vacuum bag process of the present invention;

[0017] Figure 4 The figure is a schematic diagram of the cooperation between the mold body, the positioning block and the positioning column in one embodiment of the mold for vacuum bag process of the present invention.

[0018] Component number description:

[0019] 10. Lamination; 100. Mold body; 110. Variable thickness area; 120. Accommodating cavity; 200. Positioning block; 210. Positioning hole; 300. Positioning column; 400. Positioning plate. DETAILED DESCRIPTION

[0020] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless there is a conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific implementation methods, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0021] When numerical ranges are given in the examples, it should be understood that unless otherwise specified herein, both endpoints of each numerical range and any value between the endpoints may be used. Unless otherwise defined, all technical and scientific terms used in this utility model are consistent with the prior art as understood by those skilled in the art and the description of this utility model. Any prior art methods, equipment, and materials similar or equivalent to those in the examples of this utility model may also be used to implement this utility model.

[0022] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0023] See also Figures 1 to 4 The present invention provides a mold for a vacuum bag process, which includes a mold body 100, a positioning block 200, a positioning column 300 and a positioning plate 400. The mold body 100 includes a variable thickness area 110; the positioning block 200 is embedded in the variable thickness area 110, and the surface of the positioning block 200 is flush with the profile of the variable thickness area 110. A positioning hole 210 is provided on the positioning block 200; one end of the positioning column 300 extends into the positioning hole 210, and the other end of the positioning column 300 extends to a side away from the mold body 100; a through hole for the positioning column 300 to pass through is provided on the positioning plate 400, and the through hole is mounted on the positioning column 300; the shape of the positioning plate 400 is consistent with the profile of the variable thickness area 110, and the edge contour of the positioning plate 400 is consistent with the contour of the variable thickness area 110.

[0024] See also Figure 2 and Figure 3The positioning block 200 can be any three-dimensional structure, such as a cylinder, a prism, a cuboid, and a cube. The variable thickness area 110 is provided with a receiving cavity 120 for placing the positioning block 200. The shape of the receiving cavity 120 matches the shape of the positioning block 200. For example, if the positioning block 200 is cylindrical, the receiving cavity 120 is also cylindrical; if the positioning block 200 is a cuboid, the receiving cavity 120 is also a cuboid; if the positioning block 200 is a cube, the receiving cavity 120 is also a cube. In one embodiment, the material of the mold body 100 is cast fiberglass. In order to reduce the difficulty of manufacturing the mold body 100, the positioning block 200 and the receiving cavity 120 are regular shapes. For example, the positioning block 200 is cylindrical. There is no restriction on the size of the positioning block 200 here, and it can be adjusted according to actual needs. In this embodiment, the mold body 100 is fixedly connected to the positioning block 200. For example, fixing glue is coated on the side wall of the accommodating cavity 120, and the mold body 100 is fixedly connected to the positioning block 200 by the fixing glue.

[0025] See also Figure 1 In one embodiment, the profile of the variable thickness region 110 is planar, and the positioning plate 400 is made of steel plate. The thickness of the steel plate is not restricted. A positioning plate 400 that is too thick will be inconvenient to operate, while a positioning plate that is too thin will provide insufficient support. For example, to facilitate operation while ensuring good support for the positioning plate 400, the steel plate is set to a thickness of 1 mm. In another embodiment, the profile of the variable thickness region 110 is non-planar, and the positioning plate 400 is made of a paste-formed fiberglass plate, the shape of which matches the profile of the variable thickness region 110. The thickness of the fiberglass plate is also not restricted and can be adjusted according to actual needs. For example, to ensure good strength, the fiberglass plate is set to a thickness of 2 mm. The positioning plate 400 can be laser cut to a shape that matches the profile of the variable thickness region 110. To improve the precision of the fixing plate, a CNC (Computer Numerical Control) machine tool is used to engrave the cutting lines on the fixing plate before cutting.

[0026] See also Figure 1In one embodiment, the variable thickness zone 110 includes any one or both of a thinning zone and a thickening zone. For example, the variable thickness zone 110 only includes a thinning zone, or the variable thickness zone 110 only includes a thickening zone, or the variable thickness zone 110 includes both a thinning zone and a thickening zone. Here, the thinning zone means that the thickness of the composite material is thinned at this location, and the thickening zone means that the thickness of the composite material is thickened at this location. In this embodiment, the variable thickness zone 110 includes both a thinning zone and a thickening zone. There is no restriction on the specific positions and quantities of the thinning zone and the thickening zone, and they can be adjusted according to actual needs. The layup of the mold body 100 includes multiple layers of fiber cloth, and the thinning / thickening layers of different variable thickness zones 110 are different. For example, when preparing the composite material 10, eight layers of fiber cloth need to be laid on the mold body 100. Some variable thickness areas 110 are thickened in the third layer, some variable thickness areas 110 are thickened in the fifth layer, and some variable thickness areas 110 are thinned in the third layer. In order to quickly identify the position and thickness of the variable thickness area 110, it can be marked on the positioning plate 400. For example, the thickness of different variable thickness areas 110 can be marked with different colors (the same thickness uses one color).

[0027] See also Figure 4 In one embodiment, each variable thickness area 110 is provided with two positioning blocks 200, each positioning block 200 is provided with a positioning post 300, and each positioning plate 400 is mounted on the two positioning posts 300, which can prevent the positioning plate 400 from rotating and causing the angle of the positioning plate 400 to shift, resulting in inaccurate positioning. Furthermore, three or more positioning blocks 200 can be provided in each variable thickness area, and each positioning block 200 is provided with a positioning post 300. The placement position of the positioning plate 400 can be determined by the three positioning posts 300, preventing the angle of the positioning plate 400 from being incorrect, avoiding the need to confirm the placement angle of the positioning plate 400 in advance each time the positioning plate 400 is placed, simplifying the operation process and improving efficiency. In other embodiments, if the shape of the variable thickness area 110 is circular, a positioning block 200 can also be provided in each variable thickness area 110 for ease of operation. Specifically, a positioning block 200 can be provided at the center of the variable thickness region 110, and a positioning hole 210 can be provided at the center of the positioning block 200. The positioning post 300 can be placed within the positioning hole 210. A through-hole matching the positioning post 300 can then be provided at the center of the positioning plate 400. The through-hole of the positioning plate 400 can be fitted over the positioning post 300, and the positioning plate 400 can be used to position the ply 10. In this embodiment, the positioning block 200 and the positioning post 300 are connected in a plug-in manner.

[0028] See also Figure 1The method of using the mold for the vacuum bag process in this application is as follows: when laying the layers on the mold body 100, insert the positioning column 300 into the positioning hole 210 on the positioning block 200, and when laying the variable thickness area 110, cut the cloth of the variable thickness area 110 along the edge of the variable thickness area 110. Specifically, if the variable thickness area 110 needs to be thinned, the fiber cloth of the variable thickness area 110 is removed; if the variable thickness area 110 needs to be thickened, the fiber cloth outside the variable thickness area 110 is removed. After the fiber cloth is completed, the positioning plate 400 is placed on the surface of the fiber cloth of the variable thickness area 110, and a vacuum bag is placed on the mold surface of the mold body 100 so that the positioning plate 400 and the fiber cloth are poured together, which can ensure that the inner and outer surfaces of the variable thickness area 110 of the composite material 10 are flat and uniform in thickness. It should be noted that conventional pouring methods in this field can be used for pouring, which will not be described here.

[0029] The mold for the vacuum bag process of the present invention is provided with a positioning block on the mold body, and the positioning column is inserted into the positioning hole of the positioning block, and a positioning plate is installed on the positioning column, and the shape of the positioning plate is consistent with the profile of the mold body. When laying the layers, the fiber cloth in the variable thickness area is cut along the edge of the positioning plate, and the fiber cloth in the variable thickness area can be accurately positioned to improve product consistency. The operation process is simplified, production efficiency is improved, and production costs are reduced. Furthermore, after the layers are laid, the positioning plate is placed on the surface of the layers and poured together with the layers, which can ensure that the inner and outer surfaces of the prepared composite material in the variable thickness area are flat and the thickness is uniform. Therefore, the present utility model effectively overcomes some practical problems in the prior art and has high utilization value and use significance.

[0030] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A mold for vacuum bag process, characterized in that, The mold comprises: A mold body (100) including a variable thickness region (110); a positioning block (200) embedded in the variable thickness area (110), the surface of the positioning block (200) being flush with the profile of the variable thickness area (110), and a positioning hole (210) being provided on the positioning block (200); a positioning post (300), one end of which extends into the positioning hole (210) and the other end of which extends toward a side away from the mold body (100); A positioning plate (400) is provided with a through hole for the positioning column (300) to pass through, the through hole being mounted on the positioning column (300), the shape of the positioning plate (400) being consistent with the profile of the variable thickness area (110), and the peripheral contour of the positioning plate (400) being consistent with the contour of the variable thickness area (110).

2. The mold for vacuum bag process according to claim 1, characterized in that: The positioning block (200) is cylindrical.

3. The mold for vacuum bag process according to claim 1, characterized in that: The mold body (100) is fixedly connected to the positioning block (200).

4. The mold for vacuum bag process according to claim 1, characterized in that: The variable thickness region (110) includes any one or both of a thinning region and a thickening region.

5. The mold for vacuum bag process according to claim 1, characterized in that: The positioning plate (400) is a steel plate.

6. The mold for vacuum bag process according to claim 1, characterized in that: The positioning plate (400) is a glass fiber reinforced plastic plate.

7. The mold for vacuum bag process according to claim 1, characterized in that: The variable thickness area (110) is provided with at least two positioning blocks (200).

8. The mold for vacuum bag process according to claim 1, characterized in that: The positioning block (200) is pluggably connected to the positioning column (300).

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