JP2003089161A - Method for producing punched honeycomb panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively produce a honeycomb panel in which a honeycomb member is held between two plate-shaped members one of which is punched. SOLUTION: A plate-shaped material 16 is mounted on a molding jig 10 (a) with a pin 14 installed in a flexible sheet 12. A hole is bored in the first plate-shaped material 16 by the pin 14 (b). A cover sheet 18 is mounted (c) and pressurized with these integrally (d). The cover sheet 18 is detached, and a honeycomb material 22 and the second plate-shaped material 24 are mounted on the first plate-shaped material (16) and laminated (e and f). The laminated materials are pressurized and heated (g), the molding jig 10 is detached, and the honeycomb panel 34 is obtained (h). By heat-curing the first and second plate-shaped materials 16 and 24 and the honeycomb material 22 integrally, heat-curing processes are unified, and a production process is simplified to reduce costs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a laminated body in which a planar member and a honeycomb member are laminated, and in particular, a plate-shaped member is a perforated member having a large number of holes perforated. The present invention relates to a panel manufacturing method.

[0002]

2. Description of the Related Art A honeycomb panel is known as a lightweight and high-strength structural material. The honeycomb panel is configured such that a honeycomb-shaped honeycomb member is sandwiched between two plate-shaped members. In addition, in the present specification, the cross section of the honeycomb member in the plane orthogonal to the plane forming the honeycomb member is not limited to the honeycomb-shaped hexagon, but includes other polygons. When such a honeycomb panel is used as a sound absorbing member, a large number of holes of a plate-shaped member have been formed in order to improve sound absorbing characteristics.

Conventionally, such a honeycomb panel has been manufactured by press-molding a plate-shaped material having holes to obtain a plate-shaped member, and then bonding the plate-shaped member and the honeycomb material.

[0004]

As described above, in the conventional method for manufacturing a perforated honeycomb panel, the molding of the plate-shaped material and the integration of the honeycomb material and the plate-shaped material are separately performed by pressure molding, Machining to make a large number of holes in the plate-shaped material, or hole formation with a pin-type jig makes it difficult to remove from the curved surface of the jig, increasing the number of manufacturing processes and increasing costs. It was high.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an inexpensive method for manufacturing a perforated honeycomb panel.

In order to solve the above-mentioned problems, a method for manufacturing a perforated honeycomb panel according to the present invention is a molding jig in which a plurality of projections are erected on a flexible sheet.
The first plate-shaped material before curing is placed in a state where the projection penetrates, and the honeycomb material before curing is also laminated on the first plate-shaped material, and the second plate-shaped material is further laminated thereon. Place and cure these materials in an integrated state with the molding jig,
It is integrally molded. After the integral molding, remove the molding jig. At this time, due to the flexibility of the sheet of the molding jig, the molding jig can be easily removed from the honeycomb panel after molding.

Before the honeycomb material is placed, the surface of the first plate-shaped material placed on the forming jig is smoothed, and the projection tips of the forming jig are prevented from protruding. The cover sheet may be placed on the first plate-shaped material in an overlapping manner, and they may be integrally pressed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention (hereinafter referred to as embodiments) will be described below with reference to the drawings. Figure 1
It is a figure which shows the schematic process of the manufacturing method of the perforated honeycomb panel of this embodiment. The molding jig 10 is formed by embedding a pin 14 made of a hard material such as metal in a flexible plate-shaped sheet 12 (FIG. 1a). Pin 1
Reference numeral 4 projects from the surface of the sheet 12 and serves as a projection of a molding jig. On the surface of the molding jig 10 provided with the protrusions,
A plate-shaped material 16 which is a resin material before being cured, which is one plate-shaped member of the honeycomb panel, is placed (FIG. 1b). At this time, the portion of the pin 14 embedded in the plate-shaped material 16 has a substantially cylindrical shape, and the portion protruding from the plate-shaped material 16 has a substantially conical shape. Thereby, the diameter of the hole of the plate-like material 16 is made substantially constant over the length thereof, and the hole can be formed in the plate-like material 16.

Further, the cover sheet 18 is placed on the plate-shaped material 16 in an overlapping manner (FIG. 1c). The cover sheet 18 has flexibility, and the pin 1 protruding from the upper surface of the plate-shaped material 16
It is arranged so as to cover the tip of No. 4. In a state where the molding jig 10, the plate-shaped material 16 and the cover sheet 18 are laminated, these are housed in a vacuum bag 20 and pressurized (FIG. 1).
d). This pressure smoothes the surface of the plate-shaped material.

After removing the plate-shaped material 16 and the like from the vacuum bag 20, the cover sheet 18 is removed, and the plate-shaped material 1 is removed.
The honeycomb material 22 is placed on 6 (FIG. 1e). The honeycomb material 22 has a hexagonal honeycomb shape in cross section. However, the cross-sectional shape is not limited to this, and it is also possible to use a shape in which other polygons are combined.

A second plate-shaped material 24 is placed on the honeycomb material 22 so as to be overlaid thereon, and the first and second plate-shaped materials 1 are placed.
The honeycomb material 22 is sandwiched between 6 and 24 (FIG. 1f). Put them in a vacuum bag 26 in a stacked state,
Pressurize and heat the first and second plate-shaped materials 16 and 2
The resin constituting 4 is cured (FIG. 1g). Then, the honeycomb member 28 is taken out from the vacuum bag 26 and removed by peeling off the forming jig 10 to remove the honeycomb member 28.
A honeycomb panel 34 sandwiched between the perforated plate member 30 and the plate member 32 without holes is obtained (FIG. 1h). Since the sheet 12 of the molding jig 10 has flexibility as described above,
It can be easily removed from the cured honeycomb panel 34.

According to the above manufacturing method, the step of molding and hardening the material is only one step, and the manufacturing cost can be reduced.

FIG. 2 is a diagram showing an example of a manufacturing process of the molding jig 10. A metal or resin first die 40, which is composed of a frame 36 and a pin die 38 provided upright inside the frame 36, is prepared (FIG. 2a). Resin is poured into the mold 40 and cured (FIG. 2b). This resin is a material that is flexible even after curing. Utilizing this flexibility, the flexible sheet 12 is removed from the mold 40 to obtain the flexible sheet 12 (see FIG. 2).
c).

Next, the sheet 12 is placed in the second mold 44 (FIG. 2d). The second mold 44 is provided with a substantially conical hole 48 at a position corresponding to the hole 46 of the sheet 12 formed by the pin mold 38. Therefore, the second mold 4
4 when the seat 12 is placed in the seat hole 46
The hole 48 of the mold is one continuous hole. The molten metal 50 is poured there (FIG. 2d). The metal 50 is preferably poured in an amount sufficient to fill the holes 46 in the sheet and the holes 48 in the mold. The metal 50 hardens to become the above-mentioned pin 14, which is removed from the second mold 44 to obtain the molding jig 10 (FIG. 2e).

[Brief description of drawings]

FIG. 1 is a diagram showing a manufacturing process of a perforated honeycomb panel according to the present embodiment.

FIG. 2 is a diagram showing a manufacturing process of the molding jig 10.

[Explanation of symbols]

10 forming jig, 12 flexible sheet, 14 pins (projections), 16 first plate material, 18 cover sheet, 20 vacuum bag, 22 honeycomb material, 24 second
Plate material, 26 vacuum bag, 28 honeycomb member,
30 Perforated plate member, 32 Plate member, 34 Honeycomb panel.

Continued front page    F-term (reference) 4F100 AR00A AS00C BA03 BA07                       BA08 BA10A BA10C DC01B                       DC11A EH032 EJ082 EJ171                       EJ331 JH01 JK17A                 5D061 BB02 BB13 DD11

Claims (2)

[Claims] 1. A step of placing a plate-shaped material on a molding jig in which a plurality of protrusions are provided upright on a flexible sheet so that the protrusions penetrate, and the first plate-shaped material Pressurizing together with a jig, placing a honeycomb material on the first plate-like material, placing a second plate-like material on the honeycomb material, And a step of curing and integrally molding the second plate-shaped material and the honeycomb material in a state of being integrated with the molding jig, and from the integrally molded first and second plate-shaped materials and the honeycomb material. And a step of removing the forming jig to obtain a perforated honeycomb panel, the method for manufacturing a perforated honeycomb panel. 2. The method of manufacturing a perforated honeycomb panel according to claim 1, wherein after the step of placing the first plate-shaped material on the forming jig, the protrusion of the forming jig is further formed. A step of placing a cover sheet on the first plate-shaped material so as not to project the tip, and a step of pressurizing the first plate-shaped material and the molding jig together,
A method for manufacturing a perforated honeycomb panel, which is a step of applying pressure including the cover sheet.