JPH0361579B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold for adhesive molding of Sandersch structural curved panels.

Conventionally, for example, when adhesively molding a sandwich structure curved panel using honeycomb material or the like as a core material, the core material and the surface plate, each of which has been formed into a substantially predetermined curved surface, are coated with an adhesive and temporarily assembled. For example, a pair of adhesive molding molds consisting of a male mold and a female mold made of metal or the like were used to adhesively mold a sandwich curved panel by applying pressure and heating. Therefore, in order to adhesively mold a high-quality sandwich structure curved panel with excellent surface accuracy and strength, it is necessary to
Since a pair of precision adhesive molding molds with excellent mold surface accuracy is required, adhesive molding is especially recommended when the sandwich-shaped curved panel to be adhesively molded is large and has a special curved surface. The mold is extremely expensive, and therefore, when producing small quantities of large-sized sanderch structure curved panels having such special curved surfaces, the cost of the panels is extremely high.

The present invention has been made in view of the above-mentioned circumstances, and involves bending one mold having a known configuration having a mold surface of a predetermined curved shape, and a core material and a surface plate constituting a Sanderuch structural curved panel to be adhesively molded. A predetermined pressure is applied in the cell axis direction to each cell wall located at a portion corresponding to the mold surface of the one mold on one cell end surface of the honeycomb material whose compressive strength is greater after buckling than the resistance force. A pair of adhesive molding molds is constructed by forming a honeycomb material mold with a mold surface that matches the mold surface of the front one mold, which is formed by buckling a part of the mold. It is possible to inexpensively provide an adhesive molding mold capable of adhesively molding a high-quality sandwiched structure curved panel, and is particularly useful when producing small quantities of large-sized sandwiched structure curved panels having a special curved surface. The purpose of the present invention is also to enable production of such panels at low cost.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

In FIG. 1 and FIG. 2, 1 is one mold, and this one mold 1 is made of, for example, metal, wood,
It has a known construction made of a suitable material such as plastic, and has a mold surface 2 of a predetermined curved shape formed on its surface. 3 is a honeycomb material mold forming a pair with one mold 1, and this honeycomb material mold 3
is structured as follows. That is, 4 has a predetermined thickness to form the main body of the honeycomb material mold 3, and is adhesively molded, for example, a surface plate 7b of a large curved surface panel 7 with a sandwich structure having a core material 7a of honeycomb material, plastic foam, etc. It is a honeycomb material whose compressive strength after buckling, which will be described later, is greater than the bending resistance of 7b and core material 7a, and whose compressive strength before buckling is smaller than that of one type 1, and its smooth bottom side A bottom plate 5 is bonded to the end face of the cell. Reference numeral 6 denotes a mold surface formed on the cell end surface on the mold surface side of the honeycomb material 4 and having a shape that matches the mold surface 2 of the one mold 1 described above, and this mold surface 6 corresponds to the mold surface 2 of the one mold 1. It is formed by applying a predetermined pressure in the axial direction of the cell wall 4b forming each cell 4a located at a portion where the cell wall 4b is partially buckled.

As explained above, the adhesive molding mold for the Sandersch structure curved panel according to the present invention includes one mold having a known configuration and a part of the cell wall 4b attached to one cell end surface of the honeycomb material 4 having a predetermined compressive strength. The honeycomb material mold 3 has a mold surface 6 having a predetermined curved shape formed by buckling the honeycomb material.

Next, an example of the main steps of manufacturing the honeycomb material mold 3 having the above structure will be explained with reference to FIGS. 3a and 3b. FIG. 3a is a sectional view showing the state of the honeycomb material mold 3 before forming the mold surface 6 of a predetermined curved shape on the cell end face on the mold surface side, and the honeycomb material mold 3 is formed to have a predetermined thickness and has a predetermined compressive strength. A bottom plate 5 is bonded to the bottom side cell end face of the honeycomb material 4 having the following structure. The cell end face on the mold surface side of the honeycomb material making mold 3 in this state is made to correspond to the mold surface 2 of one mold 1, and the honeycomb material 4
By applying a predetermined pressure P greater than the compressive strength of the honeycomb material 4 in the axial direction of the cells 4a and pressing the cell end face on the mold surface side to the mold surface 2 of one of the molds 1, the third
As shown in Figure b, the cell walls 4b on the cell end surface on the mold surface side of the honeycomb material mold 3 are buckled by the mold surface 2, and the cell end surface on the mold surface side has a mold with a predetermined curved shape that matches the mold surface 2. A surface 6 is formed.

Honeycomb material mold 3 formed by the above method
has a compressive strength greater than the bending resistance of the Sandersch structural curved panel 7 to be adhesively molded, and its mold surface 6 completely coincides with the mold surface 2 of one mold 1. Since the mold surface 6 is formed by a series of cell walls 4b having a constant width that are crushed by buckling, the contact area is large and the mold surface 6 comes into surface contact with the molded object, so it is a sandwich structure curved surface that is adhesively molded. It is possible to pressurize the panel 7 uniformly, and the surface plate 7 of the panel 7
It won't hurt b. Therefore, a high-quality sandwich structure curved panel 7 with excellent surface accuracy and strength etc.
can be adhesively molded.

In addition, when the surface plate 7b used for the sandwiched structure curved panel 7 to be adhesively molded is made of an extremely thin material,
Or in the case of soft materials, etc., especially the surface plate 7
If high precision is required for quality such as smoothness of b, adhesive molding may be performed using, for example, a mold face plate formed in advance into a predetermined mold curved surface between the mold face 6 and the face plate 7b. Alternatively, the configuration of the honeycomb material mold 3 may be such that a mold face plate is attached to the mold surface 6 by adhesive or the like.

As described above in detail, the mold for adhesive molding of a sandwich curved structure panel according to the present invention includes one mold having a known configuration and having a mold surface having a predetermined curved shape;
A mold that matches the mold surface of one mold and is formed by buckling a part of the mold surface side cell wall of a honeycomb material having a predetermined compressive strength that forms the mold body against the mold surface of one mold. Since it is composed of a honeycomb material mold with a surface, it is possible to easily manufacture a mold for adhesive molding of a pair of sanderch structure curved panels whose mold surfaces perfectly match each other, thereby improving surface accuracy. It has become possible to provide molds for adhesively molding high-quality sanderch structure curved panels with excellent strength etc. at an extremely low cost, and in particular, to produce small quantities of large sanderch structure curved panels with special curved surfaces. Even in such cases, the effects of the present invention are significant, such as making it possible to produce such panels at low cost.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a cross-sectional view showing the state of adhesive molding of a sandwich structure curved panel, Fig. 2 is a perspective explanatory view of the main part of honeycomb material molding, and Fig. 3 a , b are cross-sectional views sequentially showing the main manufacturing steps of the honeycomb material mold. In the figure, 1 is one mold, 2 is a mold surface, 3 is a honeycomb material mold, 4 is a honeycomb material, 4a is a cell, 4b is a cell wall, 5 is a bottom plate, 6 is a mold surface, 7 is a sandwich structure curved panel, 7a is a core material, and 7b is a surface plate.

Claims (1)

[Claims] 1 The compressive strength after buckling is determined by the bending resistance of one mold having a known configuration with a mold surface of a predetermined curved shape, and the core material and surface plate that make up the Sandersch structure curved panel that is adhesively molded. It is formed by applying a predetermined pressure in the cell axial direction to each cell wall located at a portion corresponding to the mold surface of the one mold on one cell end face of a large honeycomb material, causing a part of it to buckle. and a honeycomb material mold having a mold surface that matches the mold surface of the one mold, forming a pair of molds.