JP2862070B2 - Method of manufacturing core material for honeycomb panel - Google Patents

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 core material for a honeycomb panel, and more particularly to a method for manufacturing a cylindrical core material interposed between a pair of surface plates.

[0002]

2. Description of the Related Art In general, honeycomb panels are widely used for outer wall materials, roof materials, interior materials and the like. As this honeycomb panel, a pair of rectangular aluminum alloy surface plates, a frame material formed of an extruded aluminum alloy material interposed between peripheral portions of these surface plates, and both surface plates There is known a structure in which a honeycomb core material interposed in a space formed by a frame material and a honeycomb core material are integrally formed by brazing.

[0003] In the honeycomb panel configured as described above, the honeycomb core material is formed in a hexagonal cylindrical shape by bonding a plurality of strips made of, for example, an aluminum alloy in a staggered manner and pulling the strips in a direction perpendicular to the bonding surface. A hollow body and a hexagonal cylindrical hollow body formed by bonding an aluminum alloy bent plate that has been bent in a trapezoidal wave shape in advance are used.

[0004] However, the honeycomb panel using the honeycomb core material integrally formed as described above has the following problems. That is, when manufacturing honeycomb panels of different types such as dimensions and shapes, it is necessary to cut the honeycomb core material into a predetermined shape, so that cutting not only requires a lot of labor and time, but also the honeycomb core material The shape is lost, and the strength, heat insulation and sound insulation of the honeycomb panel are reduced. In a honeycomb core material using a bent plate, there is a problem that a hollow body such as a circle or a triangle cannot be formed.In addition, when a honeycomb panel is formed using this kind of honeycomb core material, Since it is necessary to prepare a honeycomb core material cut in accordance with the space constituted by the surface plate and the frame material, it takes time and effort to set the honeycomb core material, resulting in poor workability. When forming a bent panel having a curved surface on a surface plate, the bending direction of the core material is constant two-dimensional, and it is difficult to form a spherical three-dimensional bent panel.
When the bent panel is formed, a gap is formed between the core material and the face plate, and therefore, the gap must be filled with a filling. There was such a problem.

Accordingly, as a means of solving the above problem, the applicant has developed a honeycomb panel in which a core material is formed of a group of a large number of independent cylindrical single bodies, as a means for solving the above-mentioned problem (Japanese Utility Model Application Laid-Open No. H05-158,1992). -43211). According to this honeycomb panel, since a tubular single body can be easily interposed in the space between the surface plates, there is an advantage that any of the planar and curved honeycomb panels can be easily manufactured. .

[0006]

Incidentally, the cylindrical single body constituting the core material of the honeycomb panel disclosed in Japanese Utility Model Application No. 5-43211 is formed of a hollow extruded shape made of an aluminum alloy. An aluminum alloy plate material formed by bending a cylindrical shape can be used. However, in the case of forming with a hollow extruded profile, it is necessary to cut the extruded profile into a predetermined length (dimensions equivalent to the thickness of the panel) after forming the hollow extruded profile. In addition, there is a problem that it takes a considerable amount of time to provide an air vent hole for preventing clogging by the evaporating brazing material on the side surface of the cylindrical body at a high temperature during panel molding. On the other hand, in the method of forming a cylindrical body by bending a plate material, it is possible to easily provide an air vent hole by punching the plate material with a tool such as a punch.
There is a problem that a large amount of labor is required for providing air vent holes in a large number of cylindrical bodies and for bending each of them.

The present invention has been made in view of the above circumstances, and provides a method of manufacturing a core material for a honeycomb panel in which a tubular core material having an air vent hole is easily formed from a plate-shaped core material to improve productivity. It is intended to provide a method.

[0008]

In order to achieve the above object, a method of manufacturing a core material for a honeycomb panel according to the present invention comprises: a cutting step of cutting a plate-shaped core material into a predetermined length; Drilling process of forming air vent holes in the material, and moving the pressure roller in parallel with the core material while pressing the pressure roller against the surface of the core material with the air vent holes, and forming a cylindrical shape from the core material A bending step of forming a core material,
An extraction step of extracting a cylindrical core material from the pressure roller,
(Claim 1).

In the present invention, the cutting step and the drilling step may be performed separately, but it is preferable to perform the cutting step and the drilling step simultaneously (claim 2). The number of air vent holes formed in the hole making step may be one or more.

In the bending step, the pressing roller is pressed against the surface of the core material placed on the supporting table having a friction surface, and the pressing roller is moved in parallel with the pressing table in the pressed state. It is preferable to carry out the process (claim 3). It is possible to select and use a cylindrical roller and a conical roller as necessary.

[0011]

According to the present invention, a plate-shaped core material is cut into a predetermined length, and an air vent hole is formed at a predetermined position of the cut core material. By moving the pressure roller in parallel with the core material while pressing, a cylindrical core material can be formed from the core material. Then, the cylindrical core material can be manufactured by taking out the cylindrical core material from the pressure roller (claim 1).

In this case, by simultaneously performing the cutting step and the drilling step, the cutting operation and the drilling operation of the plate-shaped core material can be rapidly performed.

Further, by pressing a pressure roller against the surface of a core material placed on a support having a friction surface, and moving the pressure roller in a state of being pressed in parallel with the support, a core material is provided. A frictional action is generated between the core material and the friction surface, and the core material can be reliably bent into a cylindrical shape.

[0014]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a perspective sectional view of a honeycomb panel having a core material manufactured by the manufacturing method of the present invention, and FIG. 2 is a cross-sectional view of a main part thereof.

The honeycomb panel includes a pair of surface plates 1, 1 formed in, for example, a rectangular shape, a frame member 2 interposed in a peripheral portion between the surface plates 1, 1, and a pair of surface plates 1, 1. And a core part 3 interposed in a space formed by the frame material 2.

The surface plate 1 is made of an aluminum alloy plate, and the frame 2 is made of an extruded aluminum alloy. Further, the core part 3 is
Each of them is formed by a group of a large number of independent cylindrical core members 4 to form a large number of partitioned hollow portions.
Therefore, a hollow part similar to the hollow part partitioned by the inner part can be formed also at the panel peripheral part.

In this case, at least the core member 4 of the surface plate 1, the frame member 2 and the core member 4 is made of an aluminum clad material using a brazing material (JIS A4045 or the like) on the outer surface thereof. Is formed. Therefore,
Even when the core member 4 is formed by bending an aluminum alloy plate, the separated portions at both ends of the plate are joined by brazing after the honeycomb panel is formed, and the core 4 becomes completely cylindrical. It is also possible to form any one of the surface plate 1, the frame material 2 and the core material 4 with an aluminum clad material using a brazing material on the surface thereof, or alternatively, the surface plate 1, the frame material 2 and the core material Instead of using the aluminum clad material for any of the materials 4, a brazing material may be interposed between them, and the brazing material may be melted and brazed during the heat treatment. In this case, the flux is a non-corrosive flux such as KF + AlF ₃ or KAlF ₄ + K ₃ Al
It is more preferable to bond the surface plate 1, the frame member 2 and the core member 4 using a flux such as F ₆ + K ₂ AlF ₅ .H ₂ O.

The core member 4 is formed of a cylindrical cylindrical body obtained by bending a plate-shaped core material made of, for example, an aluminum alloy, and a side surface of the core member 4 is disposed in the axial direction of the core member 4. A plurality (three are shown in the drawings) of air vent holes 5 are formed in a direction in which the air vent holes are biased (FIGS. 2 and 3).
reference). By providing the plurality of air vent holes 5 on the side surface of the core material 5 in this way, the air vent holes 5 of the adjacent core materials 4 do not completely coincide with each other, and the air vent portions are not blocked.
Air can be reliably removed during brazing.

Next, the manufacturing procedure of the core material 4 will be described.
This will be described with reference to FIG. First, a roll-shaped plate-shaped core material 6 having a predetermined width A (corresponding to the thickness of the panel) formed of an aluminum clad material is set in the supply unit 7, and the plate-shaped core material 6 is illustrated in the drawing. The core material 6 is pulled out by the first transporting means and transported to the cutting / perforating portion 8 by the cutter 9 and the punch 10 at the cutting / perforating portion 8. (Length of a minute), and an air vent hole 5 is formed (cutting / drilling step: see FIG. 4A).

Next, the core material 6 having the cut and air vent holes 5 formed as described above is subjected to a friction surface 12a arranged on the bending portion 11 by a second conveying means (not shown).
Is transported onto the support table 12 having Then, the support table 1
The pressure roller 13 disposed above the lower surface 2 descends to press the surface of the core material 6, and in this state, the pressure roller 13 moves in a direction parallel to the support table 12, and the friction surface 12 a The core material 6 is bent so as to be wound along the outer shape of the pressure roller 13 due to the frictional action between the core material 6 and the cylindrical core material 4 from the plate-shaped core material 6. (Bending process: see FIG. 4B).

Then, the core material 4 is taken out from the pressure roller 13 by a core material take-out device 14 disposed on the side of the end point of the movement of the pressure roller 13, for example, a push rod 14 a protruding by extension of an air cylinder. Thus, the production of one core material 4 is completed (a take-out step: see FIG. 4C). In this case, the core material take-out device 14 is formed by an air cylinder. However, instead of the air cylinder, the core material 4 wound around the pressure roller 13 may be taken out by, for example, injection of air.

By performing the above-mentioned cutting step, punching step, bending step and take-out step continuously,
From this, the cylindrical core material 4 can be manufactured continuously.
Further, by preparing a plurality of plate-shaped core materials 6 having different widths A, the core material 4 corresponding to the honeycomb panels having different panel thicknesses can be formed. Further, by appropriately setting the cutting dimension B, the core members 4 having different diameters can be appropriately selected and molded.

In the above embodiment, the case where the core material 4 is formed in a cylindrical shape has been described. However, the shape of the core material 4 may be a cylindrical shape other than the cylindrical shape, for example, a truncated conical cylindrical shape as shown in FIG. It is also possible to form the tapered core material 4A. In this case, the pressing roller 13 may be a frusto-conical tapered pressing roller 13a as shown in FIG.

Next, an example of forming a honeycomb panel having the core member 4 formed as described above will be described. First, a frame member 2 is provided around the peripheral surface of one of the surface plates 1, a plurality of core members 4 are arranged in a state of being in contact with each other on the upper surface of this surface plate, and the other surface plate 1 is put on the upper surface. After that, it is fixed with a mold (not shown). Then, the pair of fixed surface plates 1, the frame member 2 and the core member 4 in a fixed state are inserted into a heat treatment furnace, heat-treated at an appropriate temperature, and integrally formed by brazing. At this time, since the inflated air in the core material 4 escapes from the air vent hole 5, the pressure can be adjusted in a short time, and the deformation of the surface plate 1 can be prevented. Further, even when the air shrinks due to the temperature drop to the room temperature after the heat treatment, the pressure can be adjusted through the air vent hole 5, and the deformation of the surface plate 1 can be prevented.

[0025]

As described above, according to the method for manufacturing a core material for a honeycomb panel of the present invention, the following excellent effects can be obtained.

1) According to the method for manufacturing a core material for a honeycomb panel according to the first aspect, the plate-shaped core material is cut into a predetermined length, and an air vent hole is formed in a predetermined position of the cut core material. After forming the cylindrical core material from the core material by moving the pressure roller in parallel with the core material while pressing the pressure roller against the surface of the core material, Since the cylindrical core material can be manufactured by taking out the material, a cylindrical core material having an air vent hole standardized to a predetermined dimension can be easily manufactured, and productivity can be improved. .

2) According to the method for manufacturing a core material for a honeycomb panel according to the second aspect, since the cutting step and the punching step are performed simultaneously, the cutting operation and the punching operation of the plate-shaped core material can be performed quickly. Thus, productivity can be further improved in addition to the above 1).

According to the third aspect of the present invention, the pressing roller is pressed against the surface of the core material placed on the support having the friction surface, and the pressed state is maintained. By moving the pressure roller in parallel with the support table, a cylindrical core material can be formed from a plate-shaped core material. In addition to the above 1), the shape and dimensions of the core material can be made more constant. And improvement in accuracy and yield can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view of a honeycomb panel having a core material molded according to the present invention.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is a perspective view showing an example of a core material according to the present invention.

FIG. 4 is an explanatory view showing a procedure of a manufacturing method of the present invention.

FIG. 5 is a perspective view of another core material formed according to the present invention.

FIG. 6 is a schematic perspective view showing a pressure roller for bending the core material of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surface plate 2 Frame material 3 Core part 4 Core material 4A Tapered core material 5 Air vent hole 6 Core material 7 Supply part 8 Cutting / drilling part 9 Cutter 10 Punch 11 Bending part 12 Support base 12a Friction surface 13 Pressure roller 13a Pressure roller with taper 14 Take-out device 14a Push rod

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Akio Matsunaga 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture Inside Nikkei Giken Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) B21D 51/10

Claims (3)

(57) [Claims] 1. A cutting step of cutting a plate-shaped core material into a predetermined length, a drilling step of forming an air vent hole in the cut core material, and a surface of the core material having an air vent hole formed therein. Moving the pressure roller in parallel with the core material while pressing the pressure roller, a bending step of forming a cylindrical core material from the core material, and an extraction step of taking out the cylindrical core material from the pressure roller,
A method for producing a core material for a honeycomb panel, comprising: 2. The method for manufacturing a core material for a honeycomb panel according to claim 1, wherein the cutting step and the drilling step are performed simultaneously. 3. The bending step includes: pressing a pressure roller against a surface of a core material placed on a support having a friction surface, and moving the pressure roller in a state of being pressed in parallel with the support. The method for producing a core material for a honeycomb panel according to claim 1, wherein the method is performed.