JPH07108508A - Flash board manufacturing method - Google Patents

Abstract

(57) [Summary] [Objective] To provide a manufacturing method capable of mass-producing a curved curved flash plate at low cost. [Structure] A large number of comb-teeth-shaped grooves 7 ... Are formed in a rod-shaped core member 2 in the width direction, and the core member 2 is sandwiched between them to form a plate 3.
The back plate 4 and the back plate 4 are overlapped with each other with the adhesive layer 8 interposed therebetween, and they are put into a mold 14 having a curved convex portion 12 and / or a curved concave portion 13 and pressed to cure the adhesive layer 8 and bend the curved surface. Form a planar flash plate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for manufacturing a flash plate.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a curved curved flash plate used for a door or the like, a curved core material having a predetermined shape is made in advance, and then a plywood is bonded along the curved core material.
It was fixedly manufactured.

[0003]

Therefore, there is a problem that mass production is difficult and the cost is high.

Therefore, it is an object of the present invention to provide a manufacturing method capable of inexpensively mass-producing a curved flash plate.

[0005]

In order to achieve the above-mentioned object, the present invention forms a large number of comb-teeth-shaped grooves in a rod-shaped core member in the width direction and sandwiches the core member between them. The front plate and the back plate are overlapped with each other via the adhesive layer, put into a mold having a curved convex portion and / or a curved concave portion, and pressed to cure the adhesive layer to form a curved flash. Form a plate.

Further, a large number of comb-teeth-shaped grooves are formed in a bar-shaped core material in the width direction, and the core material is sandwiched between the plate and the back plate to form a heat-activatable adhesive layer. Then, it is put into a heating mold having a stack, a curved convex portion and / or a curved concave portion, and is heated and pressed to cure the adhesive layer to form a curved flash plate.

[0007]

[Operation] With a mold having a curved convex portion and / or a curved concave portion,
When the core material, the front plate and the back plate are pressed, the core material bends together with the front plate and the back plate due to the expansion (or contraction) of the comb-shaped grooves, and the adhesive layer is cured, The core material, the front plate and the back plate are adhered to each other, the expanded state (or contracted state) of the above-mentioned comb-shaped groove of the core material is fixed, and the front plate and the back plate are maintained and fixed on a predetermined curved surface. To be done.

If a heat-activatable adhesive layer and a heating type are used, curing of the adhesive layer is promoted and the adhesive layer is firmly adhered, and the curved surface is maintained and fixed in a short time simultaneously with the formation of the flash plate.

[0009]

The present invention will be described in detail below with reference to the drawings illustrating the embodiments.

FIG. 1 is a front view of an embodiment of a flash plate 1 molded by the manufacturing method according to the present invention, and FIG. 2 is a sectional view thereof.

The flash plate 1 is formed by adhering a plate 3 and a back plate 4 on a plurality of rod-shaped core materials 2 ...
The flash plate 1 is formed into a curved surface having a convex shape on the front plate 3 side.

On the long side end faces 5 and 5 of the flash plate 1,
Vertical columns 6 and 6 are fixed. In this way, the flash board 1
The one configured as shown in the figure has a door, a partition,
Used as wall material.

The flash plate 1 is manufactured as follows. That is, as shown in FIG. 3, a large number of comb-teeth-shaped grooves 7 ... Are formed in a square pole-shaped core material 2 in a width direction (a direction along a short side of the core material 2) at a predetermined pitch to form grooves. By contracting or expanding 7 ..., The core material 2 is configured to be bendable toward the discontinuous one end face 10 side or the opposite other end face 11 side.

As shown in FIG. 4, the core material 2 is placed so that the plate 3 faces the one end surface 10 of the core material 2 and the other end surface 11 of the core material 2 faces the back plate 4. Then, the plate 3 and the back plate 4 which are exposed in a sandwich form are overlapped with each other via the adhesive layers 8 to form a laminate 9. At this time, an appropriate number of core members 2 are provided between the front plate 3 and the back plate 4 (as shown in FIG. 1) with a predetermined mutual interval.

Next, a first molding portion 15 having a curved convex portion 12 corresponding to the shape of the back plate 4 side (as shown in FIG. 2),
The laminated body 9 is put into a mold 14 having a second molding portion 16 in which a curved concave portion 13 corresponding to the shape on the front surface 3 side (as shown in FIG. 2) is formed, and the back plate 4 From the side facing the plate 3, pressure is applied by the curved concave and convex portions 13 and 12.

Then, as shown in FIG. 5, the core member 2 has the front plate 3 and the back plate 4 by expanding the grooves 7 ... (In the illustrated example).
Bent with. In this way, the adhesive layers 8 are cured while the laminated body 9 is curved.

When the adhesive layers 8 and 8 are cured, the core material 2, the front plate 3 and the back plate 4 are adhered to each other to fix the expanded state of the grooves 7 ... The plate 4 is maintained on a predetermined curved surface. Then, the flash plate 1 thus completed is taken out from the mold 14.

As the front plate 3 and the back plate 4, for example, plywood, fine particle board called MDF board, plastic board, or the like is used. In this case, the front plate 3 and the back plate 4 may be made of the same material or different materials. Further, as the core material 2, for example, wood or MDF board is used. When plywood is used, so-called parallel plywood shall be plywood in which the grain directions of laminated unit boards are the same.

Various kinds of adhesives can be used as the adhesive constituting the adhesive layer 8, and for example, about 100 ° C.
When a heat-activatable urethane-based adhesive that produces adhesive force by heat of 150 ° C. is used as the adhesive layer 8, a heating die equipped with a heater or the like is used for the mold 14 to heat the laminate 9. The pressure is applied, and the adhesive layer 8 is cured in that state to form the flash plate 1 having a curved surface shape.

In this way, the curing of the adhesive layer 8 is promoted and the adhesive layer 8 is firmly adhered, and the curved surface is maintained and fixed in a short time, so that the flash plate 1 can be easily and quickly formed.

Next, FIG. 6 shows a case where the flash plate 1 is formed in a complicated curved surface shape in which irregularities are continuous.

In this case, the grooves 7 of the core material 2 are formed at predetermined positions on the one end face 10 and the other end face 11, but they may be formed on either one of the one end face 10 and the other end face 11. Further, as shown in the figure, the first molding portion 15 of the mold 14 has a curved convex portion 12 and a curved concave portion 13
And the second molding portion 16 is also formed with the curved convex portion 12 and the curved concave portion 13. Using this mold 14, the flash plate 1 is formed in the same manner as in the previous embodiment.

5 and 6, either the first molding part 15 or the second molding part 16 of the mold 14 is made of rubber material or plastic such as rubber as shown in FIG. As the formed elastic molding portion 17, the flat body 18 may press the laminated body 9 against the molding portion of the other party to bend the laminated body 9 to form the flash plate 1.

The curved surface shape of the flash plate 1 is not limited to the example shown in the figure.

[0025]

Since the present invention is constructed as described above, it has the following great effects.

It is possible to mass-produce the flash plate 1 having a curved surface shape, and to reduce the cost. In addition, not only the flash plate 1 having a single concave curved surface or a single convex curved surface, but also the flash plate 1 having a complicated curved surface with continuous unevenness, which is rich in design, can be easily performed. Can be manufactured.

If the heat-activatable adhesive layers 8 and 8 and the heating mold 14 are used, the flash plate 1 can be formed easily and quickly (because the curing time of the adhesive can be shortened), and the work efficiency is improved. To do.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a flash plate manufactured by a manufacturing method of the present invention.

FIG. 2 is a sectional view of a flash plate.

FIG. 3 is a perspective view of a main part of a core material.

FIG. 4 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 5 is a cross-sectional view illustrating the manufacturing method of the present invention.

FIG. 6 is a cross-sectional view showing another embodiment.

FIG. 7 is a sectional view showing another embodiment.

[Explanation of symbols]

 2 core material 3 front surface 4 back surface 7 groove 8 adhesive layer 12 curved convex portion 13 curved concave portion 14 type

Claims (2)

[Claims] 1. A plurality of comb-shaped grooves 7 formed in a rod-shaped core member 2 ...
Are formed in the width direction, the core material 2 is sandwiched between them, and the plate 3 and the back plate 4 are overlapped with each other via the adhesive layer 8 to form the curved convex portion 12 and / or the curved concave portion 13. A method of manufacturing a flash plate, which comprises placing the mold in a mold 14 and holding the mold to cure the adhesive layer 8 to form a curved flash plate. 2. A bar-shaped core member 2 and a plurality of comb-shaped grooves 7 ...
Is formed in the width direction, and the core material 2 is sandwiched between the plate 3 and the back plate 4 with the heat-activatable adhesive layer 8 interposed therebetween.
It is characterized in that it is superposed and put in a heating mold 14 having a curved convex portion 12 and / or a curved concave portion 13 and heated and pressed to cure the adhesive layer 8 to form a curved flash plate. Flash board manufacturing method.