JPH0557763B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing an antenna, particularly a grid antenna.

[Conventional technology]

FIG. 6 is a sectional view showing a conventional method of manufacturing a grid antenna. In the figure, 1 is a mold,
It has grooves 1a on the surface. 2 is a metal wire such as molybdenum wire, 3 is a mirror side skin material made of FRP,
Numeral 4 is a core material such as a honeycomb core, and numeral 5 is a rear skin material made of FRP, which is formed into a sandwich structure.

The conventional method for manufacturing a grid antenna with metal wires is to set a metal wire 2 in a groove 1a of a mold 1, and then place a mirror side skin material 3 made of uncured prepreg, a core material 4, and an uncured prepreg thereon. A grid with a sanderch structure in which metal wires 2 are fixed at arbitrary positions on the mirror side skin material 3 by laminating the back skin material 5 made of prepreg, molding and adhering by heating and pressurizing, and then removing the mold. Manufacture antennas.

[Problem that the invention seeks to solve]

However, in the conventional antenna manufacturing method as described above, the metal wire 2 is directly embedded in the groove 1a of the mold 1, so if the metal wire 2 is thin, when the antenna is removed from the mold 1, the metal wire 2 is directly embedded in the groove 1a of the mold 1. 2 came off from the mirror surface side skin material 3.

The present invention has been made to solve these problems, and an object of the present invention is to provide a method of manufacturing an antenna in which the metal wire does not come off when the antenna is removed from the mold.

[Means for Solving the Problems] The method for manufacturing an antenna according to the present invention is a method for manufacturing a Sanderch type antenna consisting of a mirror side skin material, a metal wire, a core material, and a back side skin material. After molding, an uncured resin is applied to the core material side of the mirror side skin material, a metal wire is bonded to this resin, and the core material and back side skin material are laminated and formed into a sandwich structure. be.

[Effect]

In this invention, all or part of the mirror-side surface material is molded in advance on a mold, an uncured resin is applied thereon, and the metal wire is bonded with this resin. An antenna with a sandwich structure is manufactured by laminating, molding, and gluing the skin materials. In this case, the metal wire is placed inside the sanderch plate constituting the antenna, thereby preventing the metal wire from getting caught in the mold.

〔Example〕

Figures 1 to 4 show each process of an embodiment of the present invention, Figure 1 is a perspective view showing the state in which the mirror side skin material is molded and uncured resin is applied, and Figure 2 is a metal FIG. 3 is a cross-sectional view showing the state in which the wires are bonded; FIG. 3 is a perspective view showing the state in which the metal wires are bonded to the uncured resin applied to the mirror-side surface material formed in advance;
FIG. 4 is a sectional view showing a state in which a sanderch structure is formed. In the figure, 1 to 5 indicate the same or equivalent parts as in FIG.
is not formed. Reference numeral 6 denotes a resin that is applied to the core side of the mirror-side skin material 3 to bond the metal wire 2, and the same resin as that used for the skin materials 3 and 5 can be used. Reference numeral 7 denotes a positioning jig for the metal wire 2, which has a comb-shaped cross section. In this example, the metal wire 2
The case where the core material 4 is placed next is shown.

As shown in Fig. 1, the method for manufacturing the antenna is to first set a prepreg in a mold 1, heat and pressurize it to form a specular side skin material 3, and then attach the prepreg to the core material 4 side of the specular side skin material 3. Apply uncured resin 6. After that, as shown in FIG.
The metal wire 2 is positioned and bonded to the resin 6 using a . This situation is shown in FIG. Thereafter, as shown in FIG. 4, the core material 4 and the back skin material 5 are laminated and molded into a sandwich structure, so that the metal wire 2 does not get caught in the mold 1 when demolding, and the grid antenna can be manufactured. The core material 4 is bonded using a film adhesive or the like.
Further, the back side skin material 5 can be formed and hardened in advance and adhered with a film adhesive or the like, but it is also possible to laminate prepregs and heat and pressurize them to harden and adhere them. Skin material 3, 5
The molding or curing, molding, etc. of the entire sanderch structure are carried out in the same manner as before. For example, heating
The entire mold 1 is placed in a pressurized container, covered with a film, and evacuated, followed by heating and pressurizing by introducing heated and pressurized air to harden the resin. The metal wire 2 can be bonded with the resin 6 initially at room temperature, and then cured at the stage of finally forming the sanderch structure.

In addition, in the above embodiment, the metal wire 2 is bonded to the mirror surface side skin material 3, and the core material 4 is bonded to this.
As shown in FIG. 5, after dividing the specular side skin material 3 into a specular side part 3a and a core material side part 3b and molding only the specular side part 3a of the specular side skin material 3 in advance, uncured resin 6 After that, the core material 4 and the back skin material 5 are laminated via the core material side part 3b of the mirror side skin material 3, and the antenna is formed into a sandwich structure in the same way. Similar effects can be obtained by manufacturing. In this case, the core material side portion 3b of the mirror surface side skin material 3 may be formed in advance and bonded, or may be formed using prepreg,
May be cured.

〔Effect of the invention〕

As explained above, the present invention is capable of attaching the metal wire to the antenna by molding part or all of the mirror-side skin material, applying resin, and bonding the metal wire to the core material side of the mirror-side skin material. This has the effect of preventing the metal wire from coming off when the antenna is removed from the mold.

[Brief explanation of drawings]

1 to 4 show each process of an embodiment of the present invention, and FIGS. 1 and 3 are perspective views, and FIGS.
4 and 4 are cross-sectional views, FIG. 5 is a cross-sectional view of another embodiment, and FIG. 6 is a cross-sectional view showing a conventional method. In each figure, the same reference numerals indicate the same or equivalent parts, 1 is the mold, 2 is the metal wire, 3 is the mirror side skin material, 3a is the mirror side part, 3b is the core material side part, 4 is the core material, 5 6 is a resin, and 7 is a positioning jig.

[Claims]

1 Grid lines are formed by attaching a conductive film to the surface material of the reflector in advance, applying a liquid resist thereon, exposing it to a laser, and then etching it. Method of manufacturing a reflector. 2. The method for manufacturing a grid reflector according to claim 1, wherein the conductive film is a copper foil.