Method for forming a high-sealing glass fiber reinforced plastic radar antenna housing base

Abstract

The application discloses a forming structure and method of a high-sealing glass fiber reinforced plastic radar antenna cover base, wherein the metal base of the forming structure is arranged at two ends of a metal pedestal, a sealing gasket is arranged between the metal base and the metal pedestal, both sides of a forming die are covered on the side surface of the metal base, and the inner side surface of the forming die is a forming surface. In the method, an outer skin is laid on the inner side surface of the forming die and extends to the space between the forming die and the metal base; a honeycomb plate is arranged on the inner side surface of the outer skin and located on the top surface of the metal base at both ends; an inner skin is laid on the inner side surface of the honeycomb plate, the inner skin covers the top surface and the inner side surface of the metal base at both ends and extends to the sealing gasket; after the outer skin, the inner skin and the metal base are solidified into an integrated whole, the metal pedestal is removed by bolts and demoulded from the forming die, and the antenna cover base composed of the outer skin, the inner skin, the metal base and the honeycomb plate is obtained. The forming structure and method enhance the hardness of the antenna cover base, guarantee the flatness of the contact surface, and thus the antenna cover base has better sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antennas, and in particular to a method for forming a high-sealability fiberglass reinforced plastic radar antenna cover base. Background Art

[0002] A radome forms an enclosed space around a radar antenna, housing it and protecting it from the direct effects of the atmospheric environment. This significantly improves the radar antenna's operating environment. It also significantly reduces routine maintenance and repairs, extending its service life. The performance of the radome is crucial to ensuring the long-term operation of the radar antenna. The sealing performance of the radome, a crucial aspect of its performance, places higher demands on its materials and molding methods.

[0003] Traditional fiberglass molding processes often produce radome bases with a solid mounting surface. This surface suffers from poor hardness, workability, and flatness. This surface is susceptible to aging and deformation in the natural environment, significantly compromising the sealing performance of the radome base and causing leaks and other issues, which can affect the radome's performance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a molding method for a high-sealing fiberglass radar antenna cover base. The molding structure and method enhance the hardness of the antenna cover base, ensure the flatness of the contact surface, and improve the sealing performance of the antenna cover base, so that the antenna cover base can obtain better sealing after being connected to the radar antenna base, and prevent the antenna cover base from being deformed due to long-term aging in the later stage, resulting in a gap with the radar antenna base, thereby causing abnormal phenomena such as water leakage, thereby ensuring the normal use of the antenna cover base.

[0005] In order to solve the above technical problems, the molding structure of the high-sealing fiberglass radar antenna cover base of the present invention includes a molding mold, a metal base, bolts, a sealing gasket and a metal base. The metal base is arranged at both ends of the metal base and is fastened to each other by the bolts. The sealing gasket is arranged between the metal base and the metal base. The two sides of the molding mold are covered on the side of the metal base, and the inner side of the molding mold is the molding surface of the radar antenna cover base.

[0006] Furthermore, a gap is provided between the forming mold and the metal base.

[0007] A method for forming a high-sealability fiberglass reinforced plastic radar antenna cover base based on the above-mentioned forming structure comprises the following steps:

[0008] Step 1: Lay the outer skin on the inner side of the forming mold, and the outer skin extends between the forming mold and the metal base;

[0009] Step 2: A honeycomb panel is arranged on the inner side of the outer skin, with both ends of the honeycomb panel located on the top surface of the metal base;

[0010] Step 3: Lay the inner skin on the inner side of the honeycomb panel, and the two ends of the inner skin respectively cover the top surface and the inner side of the metal base and extend to the sealing gasket;

[0011] Step 4: After the inner and outer skins are solidified and integrated with the metal base, the bolts are removed to remove the metal base and demold it from the mold, resulting in a radome base consisting of the inner and outer skins, metal base, and honeycomb panels. Furthermore, the outer and inner skins are made of high-strength fiberglass composite panels.

[0012] Furthermore, the outer skin, inner skin and honeycomb panel are solidified into one body with the metal base by using epoxy resin bonding and vacuum bagging process.

[0013] The present invention employs the aforementioned technical solution to form a highly sealable fiberglass reinforced plastic radome base. Specifically, the metal base of the forming structure is positioned at both ends of a metal base and fastened together by bolts. A sealing gasket is positioned between the metal bases. The two sides of the forming mold overlap the sides of the metal base, and the inner side of the forming mold serves as the forming surface of the radome base. This method involves laying an outer skin on the inner side of the forming mold, extending between the forming mold and the metal base. A honeycomb panel is positioned on the inner side of the outer skin, with both ends of the honeycomb panel positioned on the top surface of the metal base. An inner skin is laid on the inner side of the honeycomb panel, with both ends of the inner skin covering the top and inner side of the metal base and extending to the sealing gasket. After the inner and outer skins are cured and integrated with the metal base, the bolts are removed, the metal base is removed, and the base is demolded from the forming mold, resulting in a radome base comprised of the inner skin, outer skin, metal base, and honeycomb panel. This forming structure and method enhance the hardness of the radome base and ensure the flatness of the contact surface, thereby improving the sealing performance of the radome base. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the molding structure of the high-sealability fiberglass reinforced plastic radar antenna cover base of the present invention;

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle. DETAILED DESCRIPTION

[0017] Implementation example Figure 1 and Figure 2As shown, the molding structure of the high-sealing fiberglass radar antenna cover base of the present invention includes a molding mold 1, a metal base 5, bolts 6, a sealing gasket 7 and a metal base 8. The metal base 5 is arranged at both ends of the metal base 8 and is fastened to each other by the bolts 6. The sealing gasket 7 is arranged between the metal base 5 and the metal base 8. The two sides of the molding mold 1 are covered with the side surfaces of the metal base 5, and the inner side surface of the molding mold 1 is the molding surface of the radar antenna cover base.

[0018] Preferably, a gap is provided between the forming mold 1 and the metal base 5 .

[0019] The advantage of this structure is that the flatness accuracy of the mounting surface of the traditional fiberglass structure antenna cover base is much lower than the flatness of the metal base mounting surface. This structure uses a metal base to replace the traditional fiberglass base, which greatly increases the flatness of the mounting surface of the antenna cover base, thereby making the product have better sealing.

[0020] A method for forming a high-sealability fiberglass reinforced plastic radar antenna cover base based on the above-mentioned forming structure comprises the following steps:

[0021] Step 1: Lay the outer skin 3 on the inner side of the forming mold 1, and the outer skin 3 extends between the forming mold 1 and the metal base 5;

[0022] Step 2: Set the honeycomb panel 2 on the inner side of the outer skin 3, and the two ends of the honeycomb panel 2 are located on the top surface of the metal base 5;

[0023] Step 3: Lay the inner skin 4 on the inner side of the honeycomb panel 2, and the two ends of the inner skin 4 respectively cover the top surface and the inner side surface of the metal base 5 and extend to the sealing gasket 7;

[0024] Step 4: After the inner skin 4 and the outer skin 3 are solidified into one with the metal base 5, remove the bolts 6 to remove the metal base 8, and demold it from the forming mold 1 to obtain the antenna cover base composed of the inner skin 4, the outer skin 3, the metal base 5 and the honeycomb panel 2.

[0025] Preferably, the outer skin 4 and the inner skin 3 are high-strength glass fiber composite panels.

[0026] Preferably, the outer skin 4, the inner skin 3 and the honeycomb panel 2 are solidified into one body with the metal base 5 by epoxy resin bonding and vacuum bagging process.

[0027] Compared to the traditional FRP radome base molding process, this method offers faster molding time and higher efficiency. This process eliminates the traditional drilling process for the FRP radome base. The holes are machined during the metal base manufacturing process, achieving higher hole accuracy than the post-drilling process of traditional FRP products. The screw holes used to secure the metal base to the metal pedestal can also serve as the screw holes for connecting the metal base to the radar antenna base.

[0028] This molding structure utilizes a sandwich structure between the molding die and the metal base, which is secured with bolts and a metal base, with a sealing gasket positioned between the metal bases. When molding the radome base, epoxy resin serves as the matrix material, while the outer and inner skins of high-strength fiberglass serve as the reinforcements. Honeycomb panels serve as the core layer. During production, the outer skin is first placed in the molding die, the honeycomb panels and metal base are placed atop the outer skin, and the inner skin is placed on the surface of the metal base. The inner and outer skins are bonded to the honeycomb panels and metal base with epoxy resin and then cured using vacuum bagging. The epoxy resin matrix material has a temperature tolerance of less than 120°C, and the honeycomb panel material has a temperature tolerance of less than 120°C. This molding structure and the resulting radome base are suitable for radomes in various frequency bands that require high sealing performance.

[0029] The materials used in this molding structure have excellent temperature resistance, which can ensure that the antenna cover base has good heat resistance. Its molding process is simple and practical. The inner and outer skins are bonded to the honeycomb panels and the metal base through epoxy resin and are respectively cured into one body by vacuum bag pressing. The two are firmly combined. In addition, due to the processability and flatness of the metal base, it has good structural strength and extremely high sealing.

Claims

1. A method for forming a high-sealability fiberglass reinforced plastic radar antenna cover base, wherein the forming structure of the radar antenna cover base includes a forming mold, a metal base, bolts, a sealing gasket and a metal base, wherein the metal base is provided at both ends of the metal base, the metal base is fastened to the metal base by the bolts, the sealing gasket is provided between the metal base and the metal base, the two sides of the forming mold are covered with the side surfaces of the metal base, and the inner side surface of the forming mold is the forming surface of the radar antenna cover base, characterized in that The steps include: Step 1: Lay the outer skin on the inner side of the forming mold, and the outer skin extends between the forming mold and the metal base; Step 2: A honeycomb panel is arranged on the inner side of the outer skin, with both ends of the honeycomb panel located on the top surface of the metal base; Step 3: Lay the inner skin on the inner side of the honeycomb panel, and the two ends of the inner skin respectively cover the top surface and the inner side of the metal base and extend to the sealing gasket; Step 4: After the inner skin and outer skin are solidified into one with the metal base, remove the bolts to remove the metal base and demold it from the forming mold to obtain the antenna cover base composed of the inner skin, outer skin, metal base and honeycomb panel.

2. The method for forming a high-sealability fiberglass reinforced plastic radome base according to claim 1, characterized in that: The outer skin and the inner skin are high-strength glass fiber composite panels.

3. The method for forming a high-sealability fiberglass reinforced plastic radome base according to claim 1 or 2, characterized in that: The outer skin, inner skin and honeycomb panel are solidified into one body with the metal base by using epoxy resin bonding and vacuum bag pressing process.

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