CN113071129A

CN113071129A - Hexagonal honeycomb core with vertical gluten and manufacturing method thereof

Info

Publication number: CN113071129A
Application number: CN202110367002.4A
Authority: CN
Inventors: 朱华平
Original assignee: Jiangsu Qiyi Technologies Co ltd
Current assignee: Jiangsu Qiyi Technologies Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-07-06
Anticipated expiration: 2041-04-06
Also published as: CN113071129B

Abstract

The invention discloses a preparation method and equipment of a hexagonal honeycomb core with vertical gluten at intervals, wherein the honeycomb core comprises a core unit chain consisting of a plurality of trapezoidal hollow stand columns arranged in rows; the two adjacent core body unit chains are folded along the rotating shaft and symmetrically attached to form a cylinder in an interval and staggered mode; the side walls of the columns comprise a supporting layer and an adhesion layer, the supporting layer and the adhesion layer are made of different materials, the melting temperature of the adhesion layer is lower than the softening point of the supporting layer, longitudinally adjacent units are connected through longitudinally arranged connecting walls and vertical face ribs, and adjacent side walls of transversely adjacent units are attached through the adhesion layer of the main body unit and the adhesion layer on the vertical face ribs.

Description

Hexagonal honeycomb core with vertical gluten and manufacturing method thereof

Technical Field

The invention relates to the technical field of honeycomb structures, in particular to a hexagonal honeycomb core with vertical gluten and a manufacturing method thereof.

Background

The honeycomb material has the advantages of light weight, high rigidity/mass ratio, high strength/mass ratio, high compressive strength and the like, and is widely applied to various fields requiring light weight, such as aramid fiber honeycombs and aluminum honeycombs on airplanes, thermoplastic PP honeycombs in the field of transportation, paper honeycombs in the packaging industry, backing plates of light weight components in the photovoltaic industry and the like.

It is known that the honeycomb produced by the existing honeycomb production technology mainly has tubular honeycomb and semi-closed folded honeycomb. Tubular honeycombs were mainly produced in a segmented, i.e., discontinuous, production process, which was the first commercial thermoplastic honeycomb, using materials such as Polycarbonate (PC) and Polyetherimide (PEI) in addition to the most commonly used polypropylene (PP), the mechanical properties of which are largely dependent on the density and tube diameter of the honeycomb core. Tubus Bauer, Plascore, Induplast and Newcourt are all manufacturers of tubular honeycomb, and in recent years, such core materials are combined with a glass fiber reinforced polypropylene skin layer and applied to automobile spare wheel covers.

In addition, the extruded core tube is a hexagonal honeycomb core plate, such as the honeycomb core plate produced by Induplast and Newcourt, the extruded blocks are long, but the planar size of the core is only 150mm × 150mm, so that a plurality of blocks need to be bonded together and cut to a required thickness by a saw or a hot wire, the automation degree of the whole production process is low, and the cost is relatively high.

Based on the development that Hexcel corporation developed a complex process for the production of PP and PET honeycombs, called Cecore, each cell being formed independently by the movement and bonding of tools, Hexcel introduced a thermoplastic honeycomb made of nonwoven fabric, named HexWeb EM, in 2001. Versacore recently proposed that traditional thermoplastic automation processes and applications have been established, and in 2002 Versacore/Thermostack equipment was introduced on the market. The two processes can continuously and automatically produce the thermoplastic honeycomb core, thereby reducing the cost. However, in the production of honeycomb cores having small pore diameters, the production speed is limited because the ribbons need to be welded one by a tool.

Recently, Sodesa developed a process for continuously extruding honeycomb cores by extruding the molten material through a die into strips with a regular pattern and stretching the strips to form the desired honeycomb shape, which is known as Hexacore. Wacotech corporation developed an excellent technique for forming thermoplastic honeycombs from a continuous film via "braiding", but the production speed was limited due to the need for vertically removing the die from the already formed honeycomb, and the internal structure of the material was less than ideal.

The manufacturing process of the semi-closed folded honeycomb comprises the following steps: firstly, coating an adhesive on the surface of flat paper to form adhesive lines, then arranging the adhesive lines in a staggered manner through multi-layer stacking, and finally cutting and stretching the formed blocks to form the hexagonal honeycomb core. The hexagonal size and thickness of honeycombs made from unimpregnated low cost paper, which is mainly used for component packaging and filling, is typically above 10mm because the smaller the internal hexagonal size, the more time consuming and inefficient the conventional manufacturing process.

Another production process for conventional honeycombs is the corrugated type, which is not commonly used due to its high cost, since it requires manual operations (folding and gluing of the corrugated paper) and is difficult to cut, but if inexpensive corrugated board is used, a heavier but more economical honeycomb core can be produced by this method, the unit size of standard corrugated board is 5mm, the size of the unit size being related to the surface quality, and so paper honeycomb applications are currently usually accomplished manually through a stack of corrugated board. The sandwich structure plate which is formed by reinforcing the surface by glass fiber or natural fiber felt and forming the core layer by honeycomb paper is used for a sun shield, a hard top, a wrapping frame, a spare tire cover and a luggage box bottom plate.

The use of small amounts of raw materials for the production of honeycomb cores makes it possible to provide very economical sandwich materials for automotive parts if appropriate types of raw materials (e.g. paper, PP films) are combined with efficient production methods. However, the high cost of the production process limits its application in the automotive and furniture industries.

Most of the honeycomb production process technologies are discontinuous production process flows, and now more advanced continuous production processes appear in succession, for example, the continuous production processes disclosed in patent numbers CN101084108B and CN105835484A, but there are also places to be improved, as follows:

according to the technical scheme disclosed by the patent number CN101084108B, when the forming (compacting) and folding process (folding) are carried out, each folded honeycomb hexagon is in a separated two-half hexagon state, so that proper lateral pressure cannot be obtained in the process of folding to 90 degrees (vertical), the fusion bonding strength of an individual hexagonal honeycomb and adjacent vertical edges among the hexagonal honeycombs is influenced, and the compression resistance of the honeycomb core is finally influenced. In addition, the process stability of the downstream thermal compounding process is affected, especially when the ratio of the honeycomb thickness to the hexagonal side length or the hexagonal inscribed circle size is large. Meanwhile, the low connection strength can also cause the honeycomb core plate to scatter or break away in the secondary processing and conveying process, thereby influencing the positioning precision of the secondary processing. In addition, the forming mold is complex, and the honeycomb cores with different thickness sizes cannot be changed effectively and quickly.

The patent of patent No. CN105835484A discloses a continuous production technology cuts off for whole, then misplaces and piles up, the error is great, form irregular hexagon structure and reduce holistic intensity, and because its specific forming process, the top or the bottom of its honeycomb core plate's 50% or 100% honeycomb hexagon are sealed, material is heated and can be shrunk in the course of working, middle top material can shrink concave down owing to do not having the support, can not form the bonding with other materials and also can not increase area of contact, cause unnecessary material quantity.

Therefore, a manufacturing process of a polygonal honeycomb core board is urgently needed, the cross section of the manufactured honeycomb core board is in a polygonal shape with a complete structure, the adjacent edges of the manufactured honeycomb core board have good bonding strength, and the manufactured honeycomb core board has excellent mechanical properties under the condition of less material consumption.

The hexagonal honeycomb core in the patent of the invention existing in the applicant is also prepared by firstly preparing half hexagons, synthesizing two half hexagons into hexagonal cylinders, then cutting the hexagonal cylinders up and down and folding the hexagonal cylinders, but the hexagonal honeycomb core cannot bear bonding pressure when a plurality of rows of core body units are attached and is easy to collapse, so that a vertical face rib structure is added on the basis of the prior art, and the process problem is effectively solved.

Disclosure of Invention

In order to solve the technical problem, the invention provides a hexagonal honeycomb core with vertical gluten and a manufacturing method thereof.

In order to achieve the above object, the present invention provides a hexagonal honeycomb core with raised gluten, comprising a plurality of core unit chains arranged in a row, each core unit chain being formed by symmetrically attaching a plurality of core units, each core unit being a trapezoidal cylinder surrounded by sidewalls, the sidewalls comprising a supporting layer and an adhesive layer, the supporting layer and the adhesive layer being made of materials with different melting points, the melting temperature of the adhesive layer being lower than the softening point of the supporting layer, wherein longitudinally adjacent units are connected by longitudinally arranged connecting walls and raised ribs, and adjacent sidewalls of transversely adjacent units are attached by the adhesive layer of the main body unit and the adhesive layer on the raised ribs.

Furthermore, the adhesion layer is made of a material with a melting temperature of 40-60 ℃, and the supporting layer is made of a material with a melting temperature of 150-160 ℃.

Further, the adhesion layer is made of ethylene copolymers, and the ethylene copolymers include EVA (ethylene-vinyl acetate copolymer), EAA (ethylene-acrylate copolymer), and EMA (ethylene-maleic anhydride-acrylate copolymer).

Further, the support layer is made of a polymer material which can be cast and processed, and the polymer material comprises PP (polypropylene), PA (polyamide), PC (polycarbonate) and PET (polyethylene terephthalate).

Furthermore, the structure of the side wall of the column body is two layers, wherein the inner layer is a supporting layer, and the outer layer is an adhesion layer.

Furthermore, the structure of the side wall of the column body is three layers, the inner layer and the outer layer are both adhesion layers, and the middle layer is a supporting layer.

Furthermore, at least one reinforcing rib or reinforcing rib which is staggered or aligned is arranged on the side wall of the upright post and the connecting wall respectively.

On the other hand, the invention also provides a manufacturing method of the hexagonal honeycomb core with the vertical gluten, which comprises the following steps:

s1: forming a core unit by a thermoplastic resin film through a heating compression molding process or a heating vacuum suction molding process, wherein the core unit is in a tooth-shaped structure formed by connecting a plurality of trapezoidal cylinders at the bottom edge through a connecting wall;

s2: cutting the core unit at equal intervals up and down to form cuts which are spaced up and down and are partially connected, wherein the core plates of the core unit are not completely cut off during cutting, but connecting edges are reserved at the cuts to form vertical face ribs of the core unit chains, and a plurality of longitudinally connected core unit chains are manufactured;

s3: and the core plate with the notch is rotated by plus 90 degrees or minus 90 degrees according to the notch direction by taking the notch as a folding position and the connecting edge of the notch as a folding rotating shaft, and the core plate is folded, and the adhesion layers in a hot melting state are heated to form the honeycomb core plate with the side walls of the adjacent units mutually attached and connected.

Further, in step S1, the thermoplastic resin film is a layer, and a layer of thermoplastic resin film for forming gluten is attached after the core unit with the tooth-shaped structure is formed.

Further, in step S1, the thermoplastic resin film is formed in two layers to form two core units of a tooth structure separated from each other in the upper and lower directions.

Further, in step S2, a layer of thermoplastic resin film for making vertical gluten is attached to the connecting portion of the two layers of tooth-shaped structures, and the core units of the two layers of tooth-shaped structures separated from each other up and down are pressed together to form the honeycomb core plate with vertical gluten.

Further, the side wall of the core unit comprises a supporting layer and an adhesion layer, the supporting layer and the adhesion layer are made of materials with different melting points, and the melting temperature of the adhesion layer is lower than the softening point of the supporting layer.

On the other hand, the invention also provides a manufacturing device of the hexagonal honeycomb core material with the vertical gluten, which comprises the following steps:

the multi-layer co-extrusion molding device comprises extruder equipment or a plastic suction molding device, wherein the extruder equipment is used for directly extruding a trapezoidal core unit cylinder with vertical gluten and a connecting wall; the thermoplastic forming device comprises a forming die and an engaging device, the forming die is used for hot-pressing two layers of thermoplastic films to form a vertically separated tooth-shaped structure, and the engaging device is used for pressing the vertically separated tooth-shaped structure to form a core unit;

and the slitting device cuts the core unit chain at equal intervals up and down, but does not cut the core unit chain, and the bottom edges are kept connected to form the cuts at equal intervals up and down.

The core plate with the notches is folded by the indexing and rolling device to form units connected side by side;

and the hot melting device heats the connected units after being folded, so that the adjacent side walls between the units are in hot melting connection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a honeycomb core material obtained by cutting and folding trapezoidal hollow columns according to an embodiment of the present invention;

FIG. 2 is a process flow diagram of first synthesizing a hollow hexagonal prism with raised gluten and then cutting the folded honeycomb core;

FIG. 3 is a schematic view of an extrusion process of a trapezoidal hollow column with reinforcing ribs according to an embodiment of the present invention;

FIG. 4 is a schematic view of extrusion of a trapezoidal hollow column according to an embodiment of the present invention;

FIG. 5 is a schematic view of a trapezoidal hollow column before cutting according to an embodiment of the present invention;

FIG. 6 is a schematic view of another method for manufacturing the trapezoidal hollow pillar of the present invention;

FIG. 7 is a schematic view of a single unit chain of the trapezoidal hollow pillar of the present invention after being cut;

FIG. 8 is a honeycomb core preparation apparatus of the present invention;

fig. 9 is a schematic structural view of an indexing and rolling device in the honeycomb core manufacturing equipment of the present invention.

In fig. 7, 1 trapezoidal hollow column unit chain, 2 trapezoidal hollow column units, 3 side walls, 4 connecting arms, and 5 vertical gluten.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the application.

Example 1

In the embodiment of the honeycomb core of the present invention shown in fig. 1 and 7, the honeycomb core comprises a plurality of unit chains 1 arranged in rows, wherein the unit chains 1 are columns formed by arranging a plurality of trapezoidal hollow columns, wherein longitudinally adjacent units are connected by longitudinally arranged connecting walls 4, and

adjacent side walls

3 or 4 or 5 of transversely adjacent units are attached to each other. In the present embodiment, the cells are trapezoidal hollow columns, but it should be understood that the cross-sectional shape of the cells in the honeycomb core material can be selected according to the needs, and for example, the cells can be polygonal, preferably even-numbered polygonal.

In the present embodiment, the sidewalls of the honeycomb core unit have a two-layer structure, including a support layer and an adhesion layer, wherein the inner layer is the support layer and the outer layer is the adhesion layer, but it should be understood by those skilled in the art that the number and distribution of the sidewalls are not particularly limited in the present invention, as long as it is ensured that the adjacent sidewalls of the laterally adjacent units in the honeycomb core can be connected by hot melting through the adhesion layer, for example, the sidewalls of the honeycomb core unit of the present invention may also have a three-layer structure, in which there is one adhesion layer on each side of the support layer.

In the embodiment, the supporting layer and the adhesion layer in the side wall of the honeycomb core material unit are made of different materials, wherein the supporting layer is made of polypropylene material, the adhesion layer is made of ethylene-vinyl acetate copolymer (EVA) material with 28 of Vinyl Acetate (VA), wherein the softening point of the support layer is 130 deg.C and the melt temperature of the adhesive layer is 60 deg.C, when adjacent sidewalls of laterally adjacent cells are thermally fused, the heating temperature can be controlled between 80-100 ℃ to ensure that the adhesion layer is in a melting state to realize hot melting connection, meanwhile, the heat received by the supporting layer is lower than the softening point, and the supporting layer has mechanical properties at normal temperature, therefore, the supporting layer can provide required supporting force when adjacent units are folded and attached, and the geometric shape of the units is effectively maintained, the higher bonding strength of the adjacent side walls is obtained, and the compressive strength of the honeycomb core material is greatly improved.

Example 2

In one embodiment of the present invention as shown in fig. 4, a honeycomb core is manufactured using a thermoplastic film having a two-layer structure, in which a support layer and an adhesive layer made of different materials are included in the thermoplastic film, and the melting temperature of the adhesive layer is lower than the softening point of the support layer. The support layer is made of polyethylene terephthalate (PET), the adhesive layer is made of EMA, the EMA is made of ethylene and methyl acrylate as raw materials, oxygen or peroxide is used as an initiator, and the EMA is obtained by high-pressure heating polymerization. The preparation method comprises the following steps of softening the supporting layer at 160 ℃, selecting the melting temperature of the bonding layer at 80 ℃, and controlling the heating temperature to be 100-150 ℃:

s1: and (3) respectively and simultaneously passing the two layers of thermoplastic films through an upper forming die and a lower forming die, and forming two tooth-shaped structures which are separated from each other up and down in a heating and vacuum forming mode.

S2: the core plate is formed by connecting two tooth-shaped structures in a pressing mode, wherein the connecting parts of the two tooth-shaped structures are connected in a fitting mode, the two half-hexagon unit parts are spliced to form a complete hexagon, the outer side of the core plate is an adhesion layer, and the inner side of the core plate is a supporting layer.

S3: cutting two core plates formed by tooth-shaped structures at intervals up and down to form upper and lower interval cuts, wherein the core plates are not completely cut off during cutting, but a connecting edge is reserved at the cut, the cutting mode can be carried out by adopting a method known in the prior art according to actual needs so as to meet the production requirements of honeycomb core materials with different thicknesses, and for example, the cutting mode can be carried out by adopting one of the following modes: metal or non-metal blade cutting, laser cutting, high pressure hydraulic cutting, wire cutting, resistance wire cutting, plasma cutting, or the like.

S4: use incision department as folding position, use the connection limit of incision department as the axle, the core that will have the incision is folded, each unit of horizontality is rotatory about 90 degrees on the core, form the unit of connecting side by side, the connecting portion 5 of connecting mutually laminating in the folding core constitutes the connection wall of connecting vertical adjacent unit, adjacent lateral wall is laminated each other between horizontal adjacent unit, the adhesion layer hot melt of the adjacent lateral wall of horizontal adjacent unit after messenger folds through the heating is connected, form the honeycomb core, wherein heating temperature is between the melting temperature of adhesion layer and the softening point of supporting layer, thereby when effectively keeping unit geometry, obtain the joint strength of higher adjacent lateral wall, promote the compressive strength of honeycomb core.

In an alternative embodiment, the honeycomb core obtained by the above method may also be thermally laminated on both sides to form a honeycomb panel.

The method of manufacturing the honeycomb core using the thermoplastic film having the two-layer structure is exemplified in this example, but it will be understood by those skilled in the art that the same method as in this example is also used when a multilayer structure of thermoplastic film is used, for example, when the thermoplastic film has a three-layer structure, i.e., a support layer having an adhesive layer on each side.

Example 3

As shown in fig. 4, in one embodiment of the present invention, a honeycomb core is prepared using a Polycarbonate (PC) thermoplastic film having a single layer structure, and the preparation method includes the steps of:

s1: two layers of thermoplastic films respectively pass through forming dies of an upper part and a lower part at the same time, and form two tooth-shaped structures which are separated from each other up and down in a heating and vacuum forming mode, wherein each tooth-shaped structure comprises a semi-hexagonal unit part and a connecting part which are distributed at intervals.

S2: the core plate is formed by connecting two tooth-shaped structures in a pressing mode, wherein the connecting parts of the two tooth-shaped structures are mutually attached and connected, and the two half-hexagon unit parts are spliced to form a complete hexagon.

S41: a single thermoplastic film in the core board is used as a supporting layer, a layer of Ethylene Acrylic Acid (EAA) film is thermally compounded on the upper surface and the lower surface of the core board respectively to be used as an adhesion layer, the softening temperature of PC is 140 ℃, the melting temperature of the adhesion layer is 60 ℃, and the melting temperature of the adhesion layer is lower than the softening point temperature of the supporting layer; the temperature of the heating area is set to be 80-110 ℃.

S42: folding the core board with the cut by taking the cut as a folding position and taking a connecting edge of the cut as an axis, rotating each unit in a horizontal state on the core board by about 90 degrees to form units connected side by side, forming a connecting wall for connecting longitudinally adjacent units by connecting parts 5 which are mutually attached and connected in the folded core board, and mutually attaching adjacent side walls between the transversely adjacent units;

s43: the adhesion layer hot melt of the adjacent lateral wall of horizontal adjacent unit after the heating messenger folds is connected, forms the honeycomb core, and wherein heating temperature is between the melting temperature of adhesion layer film and the softening point of the individual layer thermoplastic film who is as the supporting layer to when effectively keeping unit geometry, obtain the higher adjacent lateral wall's joint strength, promote the compressive strength of honeycomb core.

Example 4

Fig. 8 shows an embodiment of the apparatus for manufacturing honeycomb core material according to the present invention, which includes a conveyor belt device, a thermoforming device, a slitting device, an indexing and rolling device, and a hot-melting device.

Wherein, the conveyer belt device transmits the film material among all devices of the manufacturing equipment, thereby realizing the continuous manufacturing process.

The thermoplastic forming device can comprise an upper forming die, a lower forming die and infrared heating equipment, wherein two layers of thermoplastic films are respectively subjected to thermoforming through the upper forming die and the lower forming die to form a tooth-shaped structure which is separated from the upper layer and the lower layer, and the tooth-shaped structure comprises semi-hexagonal unit parts and connecting parts which are distributed at intervals; the two tooth-shaped structures enter the meshing position of the upper forming die and the lower forming die, and the connecting part of the two tooth-shaped structures is pressed by the rolling force formed by the gap between the meshing position of the upper forming die and the lower forming die to form the core plate.

The cutting device cuts the core plate formed by the two tooth-shaped structures at intervals up and down to form upper and lower interval cuts, and the core plate is not completely cut off during cutting, but a connecting edge is reserved at the cut; optionally, the cutting device may be a device that performs cutting by means of metal or nonmetal blade cutting, laser cutting, high-pressure hydraulic cutting, wire cutting, resistance wire cutting, or plasma cutting.

As shown in fig. 7, the indexing and counter-rolling device includes a set of rollers with indexing teeth, and can apply pressure to the notches with the thickness of the honeycomb core as an indexing reference, and realize that the honeycomb core units in a horizontal shape after being subjected to the notches are folded and rotated by about 90 degrees by setting the difference between the speed of the conveyor belt device and the linear speed of the indexing wheel on the indexing roller device, and are folded to form units connected side by side.

The unit that connects side by side after hot melt device heatable folding makes the adjacent lateral wall hot melt between the unit connect, forms the honeycomb core, and heating temperature is steerable between the melting temperature on lateral wall adhesion layer and the softening point of supporting layer to when effectively keeping unit geometry, obtain the higher laminating strength of adjacent lateral wall, promote the compressive strength of honeycomb core.

As shown in fig. 8, the honeycomb core manufacturing apparatus of the present invention may further include an extrusion device for preparing a thermoplastic film for extrusion-forming the thermoplastic film used as a raw material.

The honeycomb core material manufacturing equipment can also comprise a pressing device which is used for combining and pressing the formed tooth shapes to form the core plate with the complete unit parts.

The honeycomb core material manufacturing equipment can also comprise a cooling device, wherein the cooling device can be an air cooling device and is used for cooling the core plates formed by pressing two tooth-shaped structures.

The manufacturing apparatus of the present invention may further comprise a thermal compounding device for thermally compounding the face sheets on both sides of the honeycomb core sheet to form a honeycomb panel.

In one embodiment of the present invention, the manufacturing apparatus of the present invention operates in the following manner: extruding by an extruding device to form two thermoplastic films with three-layer structures, wherein the three-layer structures of the thermoplastic films comprise an adhesion layer, a supporting layer and an adhesion layer in sequence, and the melting temperature of the adhesion layer is less than the softening point of the supporting layer; two blocks of thin thermoplastic films enter a thermoplastic forming device, pass through an upper forming die and a lower forming die simultaneously, are thermally formed in a heating and vacuum forming mode to form two tooth-shaped structures which are separated from each other up and down, and each tooth-shaped structure comprises a semi-hexagonal unit part and a connecting part which are distributed at intervals. The two tooth-shaped structures enter the meshing position of the upper forming die and the lower forming die, and the connecting part of the two tooth-shaped structures is pressed by the rolling force formed by the gap between the meshing position of the upper forming die and the lower forming die to form the core plate. The core plate is cooled by the cooling device and then is conveyed to the notching device for cutting, the notching device cuts the core plate formed by the two tooth-shaped structures at intervals up and down to form notches at intervals up and down, the core plate is not completely cut off during cutting, and a connecting edge is reserved at the notches; after cutting, the core board is conveyed to the indexing and rolling device by the conveying belt device, rollers with indexing teeth in the indexing and rolling device apply pressure to the notches, the honeycomb core material units which are horizontally cut are folded and rotated by about 90 degrees to form units which are connected side by side after being folded, then the core board is conveyed to the hot melting device by the conveying belt device, the units which are connected side by side after being folded can be heated by the hot melting device, the heating temperature is controlled between the melting temperature of the adhesion layer and the softening point of the supporting layer, so that adjacent side walls among the units are connected in a hot melting mode, and the honeycomb core material.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hexagonal honeycomb core with found gluten, its characterized in that includes a plurality of core unit chains of arranging the line, and every core unit chain comprises a plurality of core unit symmetry laminating, the core unit is by the lateral wall around the trapezoidal cylinder that forms, and the lateral wall includes supporting layer and adhesion layer, and supporting layer and adhesion layer are made by the material of different melting points, and the melting temperature on adhesion layer is less than the softening point of supporting layer, and wherein connect through the connecting wall and the facade muscle of vertical setting between vertical adjacent unit, and the adhesion layer laminating on adhesion layer and the facade muscle of main unit is passed through to the adjacent lateral wall of horizontal adjacent unit.

2. A hexagonal honeycomb core with raised gluten as claimed in claim 1 wherein the adhesive layer is made of material with melting temperature of 40-60 ℃ and the supporting layer is made of material with melting temperature of 150-160 ℃.

3. A hexagonal honeycomb core with raised gluten as claimed in claim 2 wherein the adhesive layer is made of ethylene based copolymer including EVA (ethylene vinyl acetate), EAA (ethylene acrylate copolymer), EMA (ethylene maleic anhydride acrylate copolymer).

4. A hexagonal honeycomb core with raised gluten as claimed in claim 2 wherein the support layer is made of a castable polymer material comprising PP (polypropylene), PA (polyamide), PC (polycarbonate), PET (polyethylene terephthalate).

5. A hexagonal honeycomb core with raised gluten as claimed in claim 1 wherein the structure of the side wall of the column is two layers, the inner layer is a support layer and the outer layer is an adhesive layer.

6. A hexagonal honeycomb core with raised gluten as claimed in claim 1 wherein the structure of the side wall of the column is three layers, the inner and outer layers are both adhesive layers and the middle layer is a support layer.

7. The core unit chain of claim 1, wherein the side walls of the columns and the connecting wall are each provided with at least one staggered or aligned reinforcing rib or rib.

8. A manufacturing method of a hexagonal honeycomb core with vertical gluten is characterized by comprising the following steps:

9. The method of claim 8, wherein in step S1, the thermoplastic resin film is a layer, and a layer of thermoplastic resin film for forming gluten is attached after the core unit having the tooth-shaped structure is formed.

10. The method of manufacturing according to claim 8, wherein in step S1, the thermoplastic resin film is formed in two layers to form two core units of a castellated structure separated from each other in the upper and lower directions.

11. The method of claim 10, wherein in step S2, a thermoplastic resin film for forming the raised gluten is further laminated to the connecting portion of the two layers of the tooth-shaped structures, and the core units of the two layers of tooth-shaped structures separated from each other at the upper and lower sides are pressed together to form the honeycomb core plate with raised gluten.

12. The method of claim 8, wherein the side walls of the core unit comprise a support layer and an adhesive layer, the support layer and the adhesive layer are made of materials with different melting points, and the adhesive layer has a melting temperature lower than the softening point of the support layer.

13. The method of claim 12, wherein the sidewall structure is two layers, an inner layer being a support layer and an outer layer being an adhesive layer.

14. The method of claim 12, wherein the structure of the pillar sidewall is three layers, wherein the inner and outer layers are both adhesive layers, and the middle layer is a support layer.

15. The utility model provides a preparation equipment of hexagonal honeycomb core with found gluten which characterized in that includes: