A honeycomb core board and its processing technology

Abstract

The present invention relates to a honeycomb core board and its processing technology, and the processing technology includes the following steps: Folding: Fix the raw material board on the mold and fold it so that its surface has a number of folding structures with the same spacing and in the same direction; Grooving: Cut a number of evenly distributed grooves on the surface of the folding structure; Film coating: Apply a film on the surface of the folding structure of the raw material board; Interleaving: Interleave the folding structures of two raw material boards so that the grooves of the two folding structures are cross-connected to form a honeycomb core board. The beneficial effects of the present invention are: The process is simple, greatly reducing the processing cost; The structure of the honeycomb core board is simple and the cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of honeycomb core board processing, and in particular to a honeycomb core board and its processing technology. Background Art

[0002] A honeycomb core board is a kind of board with low material consumption, high specific strength and specific stiffness, and light weight. It has excellent buffering and vibration isolation functions, as well as heat insulation and sound insulation properties. It is widely used in the construction, furniture manufacturing and packaging industries. The existing structure of the honeycomb core board is formed by bonding two upper and lower boards with the honeycomb core material in the middle. The structures of the honeycomb core materials are different, including honeycomb shape, cylindrical shape and polygon.

[0003] The processing of the honeycomb core mainly includes thermoforming, hot pressing and injection molding. For example, a commonly used honeycomb core adopts the thermoforming process. After heating the honeycomb core material, it is thermoformed on both the front and back sides, and then two thin boards are bonded with glue, and finally cut. The disadvantage of this process is that it can only process thin honeycomb core materials. The structure of the honeycomb core is relatively soft and has low strength, but the cost is low, the core material has good elasticity, and it is generally used for packaging, but it cannot be used in other fields.

[0004] For the cylindrical honeycomb core board, polypropylene particles are first heated and extruded into round tubes. Then, after arranging several round tubes, they are baked at high temperature into a honeycomb shape, and finally cut into honeycomb cores. Boards are bonded on both the upper and lower sides to form a honeycomb core board. This kind of honeycomb core board has high strength and good indexes in all aspects, but the process is complex, the cost is high, and the market price is expensive.

[0005] For example, Patent WO 2008 / 141688 A2 discloses an elastic honeycomb board, production process and production equipment. Its honeycomb core material is to thermoform a polypropylene board into multiple arranged semi-honeycomb shapes, and then fold it in half in the middle and bond it by hot melting to form several neatly arranged complete honeycomb shapes, forming a honeycomb core with a hexagonal shape. A layer of thermoplastic polymer, fiber composite material, plastic deformation paper or metal sheet is bonded on the upper and lower surfaces of the honeycomb core to form a honeycomb board. This honeycomb core board has elasticity, but the processing is complex and requires folding and bonding after thermoforming.

[0006] The processing technology and defects of the above honeycomb core board are that the processing technology is complex and the cost is high, and the product structures are all composites of upper and lower boards and honeycomb core materials. Summary of the Invention

[0007] To overcome the defects in the above technology, the present invention provides a honeycomb core board and its processing technology. The structure of the honeycomb core board is simple, the processing is simple, and the cost is greatly reduced. It is realized through the following technical solutions.

[0008] A processing technology for a honeycomb core board includes the following steps:

[0009] Folding: Fix the raw material board on the mold and fold it to make its surface have several folding structures with the same spacing and in the same direction.

[0010] Grooving: Cut several evenly distributed grooves on the folding structure.

[0011] Laminating: Apply a film on the surface of the folding structure of the raw material board.

[0012] Interleaving: Interleave the folding structures of two raw material boards so that the grooves of the two folding structures are cross - connected to form a honeycomb core board.

[0013] A honeycomb core board includes a first raw material board and a second raw material board. A number of parallel first folding structures are provided on the first raw material board, and first grooves are spaced on the first folding structures. A number of parallel second folding structures are provided on the second raw material board, and second grooves are spaced on the second folding structures. The folding structures of the first raw material board and the second raw material board are inserted relatively so that the first grooves and the second grooves are plugged and engaged with each other to form a honeycomb core board.

[0014] The beneficial effects of the present invention are: The process is simple, greatly reducing the processing cost; The structure of the honeycomb core board is simple and the cost is low. Description of the Drawings

[0015] Figure 1 It is a schematic process flow diagram of the first embodiment of the present invention.

[0016] Figure 2 It is a schematic process flow diagram of the second embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of the creasing process of the first embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of the folding process of the first embodiment of the present invention.

[0019] Figure 5 It is a schematic diagram of the grooving process of the first embodiment of the present invention.

[0020] Figure 6 It is a schematic diagram of the laminating process of the first embodiment of the present invention.

[0021] Figure 7 It is a schematic diagram of the interleaving process of the first embodiment of the present invention.

[0022] Figure 8 It is a schematic diagram after the process flow of the first embodiment of the present invention is completed.

[0023] Figure 9 It is a schematic diagram of the structure of the honeycomb core board of the first embodiment of the present invention.

[0024] Figure 10 It is a schematic diagram of the explosion structure of the honeycomb core board according to the first embodiment of the present invention.

[0025] Figure 11 It is a schematic diagram of the structure of the honeycomb core board according to the second embodiment of the present invention.

[0026] Figure 12 It is a schematic diagram of the explosion structure of the honeycomb core board according to the second embodiment of the present invention Specific implementation manners

[0027] The following further elaborates the present invention in conjunction with embodiments. The described embodiments are only a part of the embodiments of the present invention. These embodiments are only used to explain the present invention and do not constitute any limitation to the scope of the present invention.

[0028] The flowcharts shown in the drawings are only illustrative examples, not necessarily including all contents and operations / steps, nor necessarily executed in the described order. For example, some operations / steps can also be decomposed, combined or partially merged. Therefore, the actual execution order may be changed according to the actual situation.

[0029] As Figure 1 shown, in the first embodiment of the present invention, a processing technology of a honeycomb core board includes the following steps:

[0030] Folding: Folding the raw material board through a mold so that its surface has a number of folding structures with the same spacing and in the same direction;

[0031] Grooving: Cutting a number of uniformly distributed grooves on the folding structure;

[0032] Laminating: Laminating on the surface of the folded raw material board, and the lamination is on the surface of the folding structure;

[0033] Interleaving: Interleaving the folding structures of two raw material boards so that the grooves of the two folding structures are cross-connected to form a honeycomb core board.

[0034] In the embodiment of the present invention, the board can be made of various materials, such as polypropylene board, cardboard, thin metal sheet or other sheet-shaped plastic boards, rubber boards, etc. The present invention takes polypropylene as an example. Polypropylene is the most widely used material for honeycomb core boards in this field.

[0035] As Figure 4 shown, placing a whole polypropylene board 10 on the profiling mold 30, and the polypropylene board is shaped along the profiling mold so as to present a number of folding structures with the same spacing, and the spacing of the folding structures is the same.

[0036] The profiling mold is provided with a number of metal sheets 31 at intervals on a flat plate. The metal sheets are parallel and perpendicular to the flat plate. With the bottom edge of the flat plate as a reference, the orientation of the metal sheets is inclined, parallel or perpendicular within the range of 0° to 90°.

[0037] The metal sheet 31 has a number of strip-shaped grooves 32 with the same spacing.

[0038] As Figure 3 shown, before folding, it also includes a step of pressing creases. Specifically: Press creases on the surface of the polypropylene plate through the molds (20, 21), so that the polypropylene plate can be folded along the creases. The creases can be formed by roll pressing or by using the die 22 of a precision punching machine to press out creases on the surface of the polypropylene plate. The creases are in a parallel shallow groove-like structure, which is convenient for folding. The spacing of the creases should consider the width and spacing of the metal sheet.

[0039] As Figure 5 shown, grooving: Adopt cutting grooving. Through the blade or saw blade 41 of the cutting die 40, cooperate with the strip-shaped groove 32 to cut out grooves on the folding structure. The depth of the grooves is about half of the height of the folding structure, and the width of the grooves is consistent with the thickness of the folding structure. The thickness of the folding structure is twice the thickness of the polypropylene plate, and the height of the folding structure can be adjusted as needed.

[0040] In other embodiments of the present invention, hot melt grooving can be adopted, and hot melt grooving is suitable for polypropylene plates.

[0041] After grooving is completed, a number of grooves 102 are formed on the folding structure 101.

[0042] As Figure 6 shown, film laminating: Through the film laminating device 50, laminate a layer of polypropylene film 51 on the surface of the polypropylene plate, covering the side with the folding structure. Film laminating enables the two polypropylene plates to be bonded together when they are inserted in opposite directions. The polypropylene film can be replaced with other films having a sticking function.

[0043] In other embodiments of the present invention, the polypropylene film can be replaced with glue, which is used to bond the upper and lower folded raw material plates together to form a honeycomb core board with upper and lower surfaces and a honeycomb layer.

[0044] As Figure 7 shown, inserting in opposite directions: Press the two polypropylene plates (10a, 10b) processed according to the above steps in opposite directions, so that the grooves on the folding structure are inserted in opposite directions.

[0045] Specifically, directly apply pressure to the two profiling molds (30a, 30b) in opposite directions, so that the polypropylene plates (10a, 10b) on the two profiling molds (30a, 30b) move relative to each other and are inserted into the grooves of their folding structures. The polypropylene film 51 enables the polypropylene plates (10a, 10b) to be bonded together to form a honeycomb core board.

[0046] As Figure 8As shown, by removing the upper and lower profiling dies (30a, 30b) to form the honeycomb core board 1, it can be used as a honeycomb board; it can also be used as a honeycomb core, with plates attached to both the upper and lower surfaces to increase strength.

[0047] The folding structures of two polypropylene plates are connected in an interleaved manner through grooves, making them into several rhombuses, squares or rectangles. The interleaved connection of the folding mechanism forms a honeycomb structure with several continuous rhombuses, squares or rectangles. Therefore, the honeycomb core has a stable structure, thus making the honeycomb board with this honeycomb core have high strength.

[0048] In another embodiment of the present invention, the folding can be carried out by thermoforming. The polypropylene plate is preheated on a mold, and then the folding structure is presented by means of vacuum adsorption. Then, through processes such as grooving, film laminating and inserting (the same as the process flow of the first embodiment), a honeycomb core board is formed.

[0049] As Figure 2 shown, it is the process flow chart of the second embodiment of the present invention. Taking the polypropylene plate as an example, the steps are as follows:

[0050] Cutting: Fix the polypropylene plate on the mold and cut the plate through a knife die, so that a number of parallel cutting structures are evenly distributed on the raw material plate. The cutting spacing should consider the width and spacing of the metal sheet. In addition to the knife die, cutting can also be carried out through a knife roll.

[0051] Shaping: Shape the cut part along the blade so that its surface has a number of folding structures with the same spacing and in the same direction; that is, place the cut polypropylene plate on the profiling die 30. When the vacuum adsorption device on the profiling die 30 adsorbs the polypropylene plate, the cut part is shaped along the blade to form a vertical cutting structure, and the cutting structure is equivalent to the folding structure.

[0052] Grooving: Cut a number of evenly distributed grooves on the cutting structure / folding structure;

[0053] Film laminating: Film laminate the surface of the raw material plate after grooving;

[0054] Inserting: Along the opposite directions of the folding structures of two plates, insert the grooves on the folding structures to form a honeycomb core board.

[0055] In the embodiment of the present invention, the metal sheet of the mold in the first embodiment is replaced with a blade, which is suitable for cutting the plate to form a folding structure.

[0056] Except for cutting and folding, other processes are the same as those in the first embodiment and will not be described repeatedly here.

[0057] As Figures 9 - 10As shown in the figure, the honeycomb core board 1 processed by the first embodiment includes a first board 10a and a second board 10b. A plurality of parallel first folding structures 101a are provided on the first board, and first grooves 102a are arranged at intervals on the first folding structures. A plurality of parallel second folding structures 101b are provided on the second board, and second grooves 102b are arranged at intervals on the second folding structures. The first board 10a and the second board 10b are inserted relatively, so that the first grooves 102a and the second grooves 102b are inserted and engaged with each other to form the honeycomb core board 1 that can be used in two ways as a core board.

[0058] As Figures 11 - 12 As shown in the figure, the honeycomb core board 1` processed by the second embodiment includes a first board 10a` and a second board 10b`. A plurality of parallel first folding structures 101a` are cut on the first board, and first grooves 102a` are arranged at intervals on the first folding structures 101a`. A plurality of parallel second folding structures 101b` are cut on the second board, and second grooves 102b` are arranged at intervals on the second folding structures. The first board and the second board are inserted relatively, so that the first grooves 102a` and the second grooves 102b` are inserted and engaged with each other to form a honeycomb core board.

[0059] After cutting, a plurality of rectangular through holes 103 are formed, which can be used as a honeycomb core board in special scenarios, such as: packaging materials that require ventilation.

[0060] Compared with the prior art, the technical solution of the present invention can make the honeycomb core board be used as both a honeycomb core board and a honeycomb core. Compared with the structure of the upper board, honeycomb core and lower board in the prior art, the structure of the present invention is more simplified, and it is a honeycomb core board formed by folding / cutting the upper and lower raw material boards.

[0061] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A processing technology for a honeycomb core board, characterized in that Including the following steps: Folding: Fix the raw material sheet on the profiling die. When folding, press creases on the surface of the raw material sheet through the die, so that the raw material sheet folds along the creases. Specifically, a number of parallel metal sheets are arranged at intervals on the profiling die. The metal sheets are parallel and perpendicular to the flat plate, and have a number of strip-shaped grooves with the same spacing. The angle of the metal sheet facing the bottom edge is 0° to 90°. Shape the raw material sheet along the profiling die to present a number of folding structures with the same spacing; Grooving: Cut a number of evenly distributed grooves on the folding structure. Through the blade or saw blade of the cutting die, cooperate with the strip-shaped groove to cut out grooves on the folding structure; Laminating: Apply a layer of film with adhesive function on the surface of the folding structure of the raw material sheet; Interfitting: Apply pressure in the opposite direction, and interfit the folding structures of two raw material sheets, so that the grooves of the two folding structures are cross-connected to form a honeycomb core board.

2. The processing technology of a honeycomb core board according to claim 1, characterized in that The crease can be formed by roll pressing or by the punching die of a precision punching press to press a crease on the surface of the polypropylene board. The crease is a parallel shallow groove structure, so that the raw material sheet generates a folding structure along the crease.

3. A honeycomb core board, adopting the processing technology of the honeycomb core board described in any one of claims 1-2, characterized in that, Including a first raw material sheet and a second raw material sheet. A number of parallel first folding structures are arranged on the first raw material sheet, and first grooves are arranged at intervals on the first folding structure. A number of parallel second folding structures are arranged on the second raw material sheet, and second grooves are arranged at intervals on the second folding structure. The folding structures of the first raw material sheet and the second raw material sheet are inserted relatively, so that the first grooves and the second grooves are inserted and engaged with each other to form a honeycomb core board.

4. A honeycomb core panel according to claim 3, characterized in that, When the first grooves and the second grooves are inserted and engaged with each other, a number of rhombic, square or rectangular cross structures are formed between the first sheet and the second sheet.

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