KR100946969B1 - Three dimensional honeycomb core having multi-face and sandwich panel thereof - Google Patents

Abstract

The present invention relates to a three-dimensional honeycomb core having a polyhedral structure and a sandwich panel using the same. Its configuration is that the projecting piece 6 is bent in a direction perpendicular to the width direction from the upper end and the lower end of the core member 4 to partially make surface contact with the plate member 10 joined to the upper or lower surface; The protruding pieces 6 may include first and second unit cores 2 ′ and 2 ″ in the form of a flat plate having an area that may be bonded to the plate member 10 by spot welding or laser welding; A plurality of connectors 20 interposed and connected by spot welding or laser welding to the connection portions of the first and second unit cores 2 'and 2 ″ to form a three-dimensional shape having a multi-sided structure. Characterized in that it comprises a.

Honeycomb, core, wall, sandwich panel, paint, coloring, spot welding

Description

Three-dimensional honeycomb core having multi-face and sandwich panel

The present invention relates to a honeycomb core and a sandwich panel using the same, and more particularly, to a three-dimensional honeycomb core having a multi-sided structure and a sandwich panel using the same.

The sandwich panel is a panel in which a plate is attached to and fixed to the upper and lower surfaces of a honeycomb core by bonding means such as adhesive or welding. As a useful means for maintaining high rigidity with low density in forming walls, it is widely used in the fields of architecture, interior, furniture and the like.

Honeycomb core manufacturing methods include expansion (expansion) production method, corrugation (corrugation) production method, molding (molding), extrusion roll forming (roll forming) and the like. In addition, the method of adhering the plate to the upper and lower surfaces of the honeycomb core includes adhesive electrodeposition, brazing welding and the like.

In general, a honeycomb core cell having a hexagonal cross section is limited in size in order to increase the surface pressure strength of the sandwich panel. For this reason, the core and the plate were difficult to be joined by spot welding because of the small cell size. Therefore, the manufacturing cost of the sandwich panel is expensive or did not have a satisfactory adhesive strength.

In order to solve a number of problems including this problem, the applicant filed a patent application No. 10-2007-0019839 with the Korean Patent Office regarding 'Honeycomb core and sandwich panel using the same' and received a patent registration. A brief description thereof is to form a joint surface capable of spot or laser welding by bending the upper and lower ends of the core member constituting the honeycomb at right angles.

More specifically with reference to Figures 1 to 2 as follows. 1 is a perspective view of a conventional honeycomb core to which the present invention is applied. 2 is an exploded perspective view of a part of a conventional sandwich panel to which the present invention is applied.

The honeycomb core 106 has a wide plate shape having a predetermined thickness by a group of cells continuous in a two-dimensional plane direction. Protruding pieces 104 protrude from the top and bottom of the core member 102 constituting the honeycomb 106 in an uneven manner. The protruding piece 104 is bent in a direction perpendicular to the thickness direction of the honeycomb core 106. As a result, the honeycomb core 106 is partially in surface contact with the plate member 110 joined to the upper and lower surfaces thereof. The protruding piece 104 has an area of 6 to 10 mm in a short side so that the protruding piece 104 can be bonded to the plate 110 by spot welding or laser welding.

According to this, the honeycomb 106 and the sandwich panel 100 using the same are provided, which can be applied to an automatic line by a robot, thereby maximizing production efficiency and further increasing the surface pressure strength and saving materials.

The present invention is a technology on the continuous line of the above patent application, it was proposed to propose a sandwich panel of various forms using a honeycomb and a honeycomb core connecting means and connected honeycomb core. In addition, it was proposed to propose a method for preventing rust of honeycomb core.

Conventional honeycomb sandwich panels are painted only to reduce rust generation on the outer portion of the sandwich panel. That is, after the core and the upper and lower plates are bonded to each other, it is impossible to paint the core to prevent rust, and aluminum, stainless steel, and the like, which are difficult to produce rust even if expensive, are used. Such a limiting factor is directly related to an increase in the manufacturing cost of the sandwich panel.

In addition, a method of connecting a sandwich panel with another sandwich panel has been disclosed in International Patent Application No. PCT / GB2004 / 000704. According to this, the method of butt welding with the channel-shaped connection member is proposed.

Also, as a method of manufacturing a three-dimensional sandwich panel, a plastic deformation is applied to a honeycomb core using a mold as described in US Pat. No. 6,372,322 B1, and a method of bonding the top plate and the bottom plate to the modified honeycomb core is provided. .

However, according to the above technology, in order to produce a very large three-dimensional honeycomb core sandwich panel (a folded honeycomb core sandwich panel), a large mold is required, there is an unreasonable side, there is a problem that the connection is weak.

In particular, when plastic deformation of honeycomb cores, the hexagonal cell structure cannot be deformed to a certain shape, and a part that is severely deformed in the cell column to generate a desired shape is generated. This partially tearing phenomenon occurs.

An object of the present invention for the above problem is to provide a honeycomb core and sandwich panel of a new structure or form using the technology filed by the applicant of the present invention to the Korean Intellectual Property Office. More specifically, it is possible to paint for rust prevention, and to provide a connecting means for connecting honeycomb cores at a predetermined angle in a condition that strength is not impaired, thereby providing a sandwich panel having a three-dimensional shape. For the purpose of

The above object is to be joined to the upper or lower surface by forming a projection piece protruding unevenly from the upper end and the lower end of the plurality of core members formed of a long width of the metal sheet having a constant width bent in a direction perpendicular to the width direction. Make partial surface contact with the plate; The protruding pieces may include first and second unit cores having a flat shape having an area of about 6 mm to about 10 mm so as to be joined to the plate by spot welding or laser welding.

The first and second unit cores comprises a plurality of connectors intermittently connected by spot welding or laser welding to the connection portion of the first and second unit cores to create a three-dimensional shape having a multi-faceted structure, It is achieved by the honeycomb core of the three-dimensional shape having a.

Here, the connector comprises two rectangular plates integrally formed with two legs (leg) open at a predetermined angle; It may include first and second connection protrusions protruding from the upper and lower ends of the leg in a direction perpendicular to the angle forming plate, respectively.

Another object of the present invention is achieved by a sandwich panel characterized in that the plate material 10 is bonded to both surfaces of the honeycomb core 2 by welding or adhesive to have a three-dimensional shape of a multi-faceted structure.

Another object of the present invention is achieved by drilling a plurality of paint holes on the core member of the honeycomb core so that the liquid paint flows into the various places.

According to the above configuration, the honeycomb core folded by welding of the connector can be produced without mechanical deformation work, there is no stress deformation in the folded part because there is no mechanical deformation work, there is no local tearing of the core part, Since the strength of the folded part in the core having the finished folded shape is determined by the strength of the connector, it is easy to adjust the strength of the folded part, and the shape of the folded core is determined according to the shape of the connector. The sandwich panel using the same can be provided at low cost. In addition, since the paint hole is drilled in the cell wall, the honeycomb core can be painted to reduce the occurrence of rust in the sandwich panel in which the mechanical bonding is completed.

Hereinafter, with reference to the accompanying drawings in the detailed description of the present invention will be described in more detail. 3 is a perspective view of a honeycomb core according to an embodiment of the present invention. 4 is a partially cutaway perspective view of the sandwich panel using the honeycomb core of FIG. 5 is a perspective view of a connector according to an embodiment of the present invention. 6 is a developed view of a core member of a honeycomb core according to another embodiment of the present invention. 7 is a perspective view of a honeycomb core using the core member of FIG. 6. 8 is a partial trial of a sandwich panel according to another embodiment of the present invention.

The honeycomb core 2 according to an embodiment of the present invention has a three-dimensional shape by connecting two or more first and second unit cores 2 'and 2 "to have a predetermined angle by a plurality of connectors 20. Each unit core 2 ', 2 "has the same flat plate configuration as the conventional honeycomb core 106 shown in FIG. Each unit core 2 ', 2 "is composed of a plurality of core members 4, each of which is formed by bending an elongated metal sheet having a predetermined width in the longitudinal direction. The core member 2 is similar to the conventional art. Protruding pieces 4 protruding from the top and bottom of the concave-convex type are bent in a direction perpendicular to the width direction, which is joined to both sides of the honeycomb core 2 when the sandwich panel is manufactured in the future. Partial surface contact with the

Although the angles of the first and second unit cores 2 'and 2 "may be variously determined according to the shape of the connector 20, they are usually formed at right angles.

The connector 20 includes an angle forming plate 22 in which two rectangular plates are integrated, and two legs 23, 25 and legs are opened at a predetermined angle (at right angles as shown); And first and second connection protrusions 24 and 26 protruding from the upper and lower ends of the legs 23 and 25 at right angles to the angle forming plate 22, respectively. The angle formed by the first connection protrusion piece 24 and the second connection protrusion piece 26 is equal to the angle of the first and second unit cores 2 'and 2 "which are intended to be connected. It is formed by bending the first and second connecting projection pieces 24 and 26 after cutting the plate into a predetermined shape.

The area of the first and second connection protrusion pieces 24 and 26 has an area capable of spot welding or laser welding. According to FIG. 4, the predetermined part of the spot welding is shown by the dotted line. The joints of the legs 23 and 25 constituting the angle forming plate 22 are attached with a gush 22a to reinforce rigidity.

In addition, the connection end 30 is protruded and extended at the end of the unit core (2 ', 2 ") to be connected so that it can be bonded to the angle forming plate 22 of the connector. The angle forming plate 22 of the connector is joined to both sides of the connecting end 30 of the honeycomb core 2 so that the two plates support the connecting portion, so there is no problem in rigidity at all.

The connector 20 should be shaped according to the characteristics (thickness, connection strength, etc.) of the desired sandwich panel. Therefore, the shape of the connector 20 is not limited to that shown.

According to the connector 20, as shown in Fig. 4, the two plate members 10 are bonded to the first and second protrusions 24 and 26 of the connector by spot welding or laser welding to form a predetermined angle. A three-dimensional sandwich panel 1 is provided. That is, the sandwich panel 1 of the bent form which consists of two planes is provided. According to this, the ease of construction on site is improved and the finish of the joint is beautiful because it is provided as a single product. The sandwich panel 1 according to the present embodiment includes a first plate 10a and a second plate 10b that are each bent at a predetermined angle or curvature. Expanding this concept can assume the sandwich panel (1) shown in FIG. The bent angle can be set variously other than the right angle.

The first plate 10a and the second plate 10b may be selectively used according to needs of different materials (for example, copper alloy, aluminum alloy, carbon steel, stainless steel or galvanized sheet, synthetic resin, etc.) or color. have. In some cases, as the material of the plate 10, a non-metallic material such as glass or acrylic may be selected.

According to another embodiment of the present invention, a known material which can function as heat insulation, sound insulation or non-combustibility in the empty space of the cell of the honeycomb core 2 may be filled in the form of a foam. The material may be arbitrarily selected as needed, polystyrene, urethane or glass fiber. In this case, the material of the core member 2 may be a paper or synthetic resin, and the like, and a chemical adhesive will be used for the bonding method. Further, the plate 10 may be combined two or more different materials.

6 to 7 are an exploded view and a perspective view of a honeycomb core of the core member according to another embodiment of the present invention. According to this, a paint hole 40 capable of passing the paint on the core member 4 of the honeycomb core 2 described in the previous embodiment is punched in various places by punching. This is a means for coloring the honeycomb core 2 to a desired color. As shown in FIG. 6, a plurality of paint holes 40 are drilled to avoid bending lines before bending the core member 4. The number and diameter of the paint hole 40 will be determined by the technical common knowledge of those skilled in the art based on the use environment.

In other words, the liquid paint flows through the paint hole 40 so that coloring may be performed on the complex surface of the honeycomb core 2. It should be enough that the mechanical strength does not cause a problem by the painter 40. Naturally, the paint hole 40 may be perforated in the connector 20 as well. When the finished sandwich panel having the paint hole 40 is immersed in the paint tank, the paint penetrates to the honeycomb core 2 so that the whole honeycomb is uniformly colored. According to this, it is possible to provide a low-cost sandwich panel that can prevent corrosion by using a cheap and easy-to-use metal material by painting.

1 is a perspective view of a conventional honeycomb core to which the present invention is applied.

2 is an exploded perspective view of a part of a conventional sandwich panel to which the present invention is applied.

3 is a perspective view of a honeycomb core according to an embodiment of the present invention.

4 is a partially cutaway perspective view of the sandwich panel using the honeycomb core of FIG.

5 is a perspective view showing a connector according to an embodiment of the present invention.

6 is a developed view of a core member of a honeycomb core according to another embodiment of the present invention.

7 is a perspective view of a honeycomb core using the core member of FIG. 6.

8 is a partial perspective view of a sandwich panel according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

One ; Sandwich panel 2; Honeycomb Core

4 ; Core member 6; Protrusion

10; Plate 20; Connector

22; Angled plates 24, 26; First and second connection protrusion

40; Painter

Claims (6)

The protruding pieces 6 protruding unevenly from the upper end and the lower end of the plurality of core members 4 are formed by bending an elongated metal sheet having a constant width in a longitudinal direction, and are bent in a direction perpendicular to the width direction, thereby forming an upper or lower surface. Partial surface contact with the plate member 10 to be bonded to the plate member, the protruding piece 6 has a flat shape having an area of 6 ~ 10mm short side so as to be bonded to the plate member 10 by spot welding or laser welding First and second unit cores (2 ', 2 ") of the; Intervening connection of the first and second unit cores (2 ', 2 ") by spot welding or laser welding to the connecting portion of the first and second unit cores (2', 2") to create a three-dimensional shape having a multi-sided structure. Honeycomb core of the three-dimensional shape having a multi-faceted structure, characterized in that it comprises a plurality of connector 20. 2. The connector (20) according to claim 1, wherein the connector (20) comprises two rectangular plates integrally formed with two legs (23, 25, legs) open at a predetermined angle; And a first and second connection protrusions 24 and 26 protruding from the upper and lower ends of the legs 23 and 25 at right angles to the angle forming plate 22, respectively. Honeycomb core of three-dimensional shape. Sandwich panel, characterized in that the three-dimensional structure of the multi-layer structure by the plate member 10 is bonded to both sides of the honeycomb core (2) by welding or adhesive. The sandwich panel according to claim 3, wherein the plate (10) is any one or more of metal, glass, stone, and wood. The sandwich panel according to claim 3, wherein the plate (10) is a metal material and is bonded by spot welding or laser welding. The honeycomb core according to claim 1, wherein a plurality of paint holes (40) are formed on the core member (4) of the honeycomb core (2).

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