CN110171145A - The production method and production equipment of thermoplastic composite core material - Google Patents

Abstract

The invention discloses a production method and production equipment of a thermoplastic composite core material. The production method comprises: forming a flat sheet with a structural layer and a functional layer by thermal compounding in a mold and continuously outputting along the output direction of the assembly line; dividing and processing the flat sheet into A plurality of core material unit pieces with the same width along the broadside output direction and in the shape of a belt along the pipeline output direction, wherein at least part of the core material unit pieces are processed with non-closed geometry repeatedly presented along the pipeline output direction on the sheet surface; A plurality of core material unit sheets are stacked and spliced along the broadside output direction to form a unit splicing body. The production equipment includes thermal composite extrusion dies, geometry forming components, cutting components, guiding positioning components and hot melt connection components, etc. The invention provides a production method and production equipment of a thermoplastic composite core material, which can continuously produce a double-layer thermoplastic composite core material with high structural strength and diversified functions at low cost.

Description

Production method and production equipment of thermoplastic composite core material

technical field

The invention relates to the technical field of material forming, in particular to a production method and production equipment of a thermoplastic composite core material.

Background technique

Honeycomb core panels not only have the advantages of low density and high strength, but also have many excellent properties such as shock absorption, sound insulation, and heat insulation, so they are widely used in ships, transportation, aerospace and other fields. Among them, thermoplastic honeycomb core materials have the advantages of extremely high specific strength, recyclable waste materials, and good thermoforming performance. Compared with traditional metal materials and non-renewable thermosetting materials, they are more competitive.

Thermoplastic honeycomb core materials on the market are mainly produced by blow molding or blister technology, which is limited by processing pressure and plastic properties of thermoplastic materials. Blister molding or blow molding are not suitable for processing complex shapes or large wall thicknesses. products, thereby limiting the maximum wall thickness of the thermoplastic honeycomb core. In addition, due to the thin wall thickness of thermoplastic core materials, it is easy to cause wall breakage, which is not conducive to adding structural fillers or functional fillers, resulting in limited functional diversification of thermoplastic core materials, which cannot meet the diverse needs of practical applications.

In addition, with the continuous upgrading of practical application requirements, thermoplastic honeycomb core materials made of a single structural material can no longer meet various complex application scenarios. In practical application scenarios, in addition to meeting the requirements of light weight and heavy load, thermoplastic honeycomb core materials often need to be adaptively added to different use environments, such as flame retardant performance, sound insulation performance, anti-corrosion performance, etc. Existing honeycomb core materials usually create new functions by adding functional fillers dispersedly into the matrix material of the honeycomb wall, but the functional materials are limited by the proportion that can be added and the distribution characteristics of the dispersion. Functional effects are also greatly limited, resulting in bottlenecks in the diversification of functional requirements for existing thermoplastic core materials.

Contents of the invention

Aiming at the above-mentioned defects or deficiencies of the prior art, the present invention provides a production method and production equipment for thermoplastic composite core materials, which can continuously produce a double-layer thermoplastic composite core with high structural strength and diversified functions at low cost material.

To achieve the above object, the invention provides a production method of thermoplastic composite core material, comprising:

In-mold thermal composite molding of flat sheets with structural layers and functional layers and continuous output along the output direction of the assembly line;

The sheet is divided and processed into a plurality of core material units with the same width along the output direction of the broadside and in the shape of a belt along the output direction of the assembly line, wherein at least part of the sheet surface of the core material unit is processed with non-closed geometry repeatedly rendered along the pipeline output direction;

stacking and splicing a plurality of core material unit pieces along the broadside output direction into a unit splicing body, and the unit splicing body includes a plurality of axial hole structures distributed sequentially along the pipeline output direction and formed by splicing the geometric bodies .

Further, in the sheet material, the functional layer may have compatibility with the structural layer for bearing load.

Optionally, among the sheets continuously output along the output direction of the assembly line, the sheet thickness of the structural layer is not less than 0.1 mm.

Optionally, the shaft hole structure includes a spliced shaft hole and a circumferentially closed shaft hole wall surrounding the spliced shaft hole, and the diameter of the circumscribed circle of the spliced shaft hole of any shape is not less than 1 mm; and/or, The ratio of the axial length of the spliced shaft hole of any shape to the diameter of the circumscribed circle of the spliced shaft hole is not greater than 200.

Further, stacking and splicing a plurality of core material unit sheets along the broadside output direction into a unit splicing body may include:

Each of the divided and processed core material units is turned over at a preset angle, so that the length direction (L) of the turned over core material unit remains along the output direction of the assembly line, and the core material unit width direction (W) forming an angle (a) with the broadside output direction of the sheet;

Each of the turned core material unit pieces is gathered and laminated and spliced into a unit splicing body along the broadside output direction.

In addition, the rotation axis (PP') of each of the core material unit pieces may be along the output direction of the pipeline.

Optionally, turning each of the divided and processed core material unit pieces at preset angles includes: making the turning directions of any two adjacent core material unit pieces opposite;

Wherein, in the first core material unit piece, the second core material unit piece and the third core material unit piece arranged in sequence along the broadside output direction, the structural layer of the second core material unit piece is The structural layer of the first core material unit sheet on one side is aligned along the broadside output direction, the functional layer of the second core material unit sheet is aligned with the third core material unit on the other side The functional layers of the sheet are aligned along the broadside output direction.

Optionally, turning each of the divided and processed core material unit pieces at preset angles includes: making the turning directions of any two adjacent core material unit pieces the same;

Wherein, in the first core material unit piece, the second core material unit piece and the third core material unit piece arranged in sequence along the broadside output direction, the structural layer of the second core material unit piece is The functional layer of the first core material unit sheet on one side is aligned along the broadside output direction, the functional layer of the second core material unit sheet is aligned with the third core material unit on the other side The structural layers of the sheet are aligned along the broadside output direction.

Further, stacking and splicing a plurality of core material unit sheets along the broadside output direction into a unit splicing body further includes:

Before lamination and splicing, move and adjust the core material unit piece along the output direction of the assembly line, so that in any two adjacent core material unit pieces, one has a high geometric shape and the other has a low geometric shape Points are aligned along the broadside output direction.

Optionally, stacking and splicing a plurality of core material unit sheets along the broadside output direction into a unit splicing body includes:

Coating an adhesive layer on the contact surface of each of the core material units, and connecting adjacent core material units through the adhesive layer; or

The structural layers or the functional layers between any adjacent core material unit sheets are connected by fusion bonding.

Optionally, the material of the structural layer includes thermoplastic polymers, filled thermoplastic polymers, fiber-reinforced thermoplastic resin-based composite materials, plastically deformable paper and/or steel-plastic composites.

Further, the thermoplastic polymer can be polypropylene, polyethylene, polyamide, thermoplastic polyester, polyvinyl chloride, polystyrene, polycarbonate, polyphenylene ether, thermoplastic elastomer, multi-component copolymerized thermoplastic, polymethyl One of methyl acrylate, polyphenylene sulfide, polyether ether ketone and polyimide or a blend of multiple thereof;

Alternatively, the filler in the thermoplastic polymer filled with filler can be wax, talc, carbon black, silica, kaolin, calcium carbonate, stearic acid, calcium stearate, whiskers, titanium dioxide, iron oxide, pigment One or more combinations of flame retardants and antioxidants;

Alternatively, the fibers in the fiber-reinforced thermoplastic resin-based composite material can be one or more of organic fibers, inorganic fibers, metal fibers, polymer fibers, and plant fibers;

Alternatively, the fibers in the fiber-reinforced thermoplastic resin-based composite material may be glass fibers, carbon fibers, basalt fibers, steel fibers, polypropylene fibers, polyester fibers, ultra-high molecular weight polyethylene fibers, polyimide fibers, and hemp fibers. One or a combination of multiple fibers.

Optionally, the functional layer is one or more functional combination layers in a flame retardant layer, an anti-ultraviolet layer, a color layer, a heat-resistant or heat-transfer layer, a magnetically permeable or magnetically resistant layer, an anti-corrosion layer, or a sound-insulating layer .

Further, the material of the functional layer may include a flame-retardant filler-filled polymer, an anti-ultraviolet filler-filled polymer, a pigment-filled polymer, a heat-resistant or heat-transfer filler-filled polymer, a magnetically permeable or magnetic-resistant filler-filled polymer One or more combinations of anti-corrosion filler-filled polymers and sound-insulating filler-filled polymers.

Further, the production method may also include:

In the unit splicing formed by splicing, when the vertical direction of the sheet surface of the sheet is the direction to bear the compressive load, the material volume utilization rate of the unit splicing body is not lower than 60%, preferably, The material volume utilization rate is not less than 80%;

And/or, on the cross-section of the core material of the unit assembly parallel to the sheet surface of the sheet, the planar void ratio is not lower than 40%, further, the planar void ratio is not lower than 60% .

According to another aspect of the present invention, a kind of production equipment of thermoplastic composite core material is provided, comprising:

Thermoplastic material molding equipment, used for thermal composite molding in the mold of flat sheets with structural layers and functional layers and continuous output along the output direction of the assembly line;

The core material unit piece processing and forming component is used to divide and process the sheet into a plurality of core material unit pieces with the same width along the output direction of the broadside and a belt shape along the output direction of the assembly line, wherein at least part of the core material The sheet surface of the material unit sheet is processed with non-closed geometric bodies that are repeatedly presented along the output direction of the assembly line;

The unit splicing body splicing assembly is used to stack and splice a plurality of the core material unit sheets along the broadside output direction into a unit splicing body, and the unit splicing body includes sequentially distributed along the pipeline output direction and passes through the geometric body Multiple shaft hole structures formed by splicing.

Optionally, the thermoplastic material molding equipment includes a first extrusion die and a second extrusion die arranged up and down, and a heat compounding device located at the molding extrusion port of the first extrusion die and the second extrusion die. Forming section.

Further, the splicing assembly of the unit splicing body includes:

The guiding and positioning component is used to flip each of the divided and processed core material units at a preset angle, so that the length direction of the turned core material unit remains along the output direction of the assembly line, and the core material unit An included angle is formed between the width direction and the broadside output direction of the sheet;

Gathering components, used to gather each of the core material unit pieces along the output direction of the broadside;

The fusion bonding component is used for heating each of the core material unit pieces to melt and bond them into a unit splicing body.

According to another aspect of the present invention, a kind of production equipment of thermoplastic composite core material is also provided, comprising:

Thermoplastic material molding equipment, used for thermal composite molding in the mold of flat sheets with structural layers and functional layers and continuous output along the output direction of the assembly line;

The core material unit piece processing and forming component is used to divide and process the sheet into a plurality of core material unit pieces with the same width along the output direction of the broadside and a belt shape along the output direction of the assembly line, wherein at least part of the core material The sheet surface of the material unit sheet is processed with non-closed geometric bodies that are repeatedly presented along the output direction of the assembly line;

A glue gun, used for coating an adhesive layer on the contact surface of each of the core material unit pieces; a unit splicing assembly, used for stacking and splicing a plurality of the core material unit pieces along the output direction of the broadside into a unit A splicing body, the unit splicing body includes a plurality of axial hole structures distributed sequentially along the output direction of the pipeline and formed by splicing the geometric bodies.

The production method of the present invention can continuously output double-layer plastic materials through thermal composite extrusion dies, etc., and can adaptively thermally composite different functional materials and structural materials into honeycomb core materials, thereby producing a double-layer structure Thermoplastic composite core materials not only maintain the advantages of light weight and heavy load of the original structural materials, but also obtain comprehensive properties that cannot be achieved by a single component material by combining with functional materials, such as flame retardancy, shielding performance, and sound absorption performance. Moreover, the production method has good production continuity, and the honeycomb body is produced in an integrated manner, and the production efficiency is high. In addition, the production equipment of the present invention is composed of a plurality of relatively simple devices, which greatly reduces the production cost and can realize continuous large-scale production.

Other features and advantages of the present invention will be described in detail in the detailed description that follows.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is according to the specific embodiment of the present invention, the schematic flow sheet of the production method of thermoplastic composite core material;

Fig. 2 is a thermoplastic material molding device according to a specific embodiment of the invention;

Fig. 3 is a schematic structural view of a specific embodiment of the production equipment used in the production method of Fig. 1;

Fig. 4 is the front view of the core material unit sheet of the smallest constituent unit constituting a specific embodiment of the unit assembly of the present invention;

Fig. 5 is a partially enlarged schematic diagram of Fig. 4;

Fig. 6 shows the three-dimensional structure of the thermoplastic composite core material according to a specific embodiment of the present invention;

Fig. 7 is the front view of Fig. 6;

Fig. 8 shows a kind of lamination splicing mode of the core material unit piece shown in Fig. 4, wherein the turning direction of any adjacent two core material unit pieces is the same;

Fig. 9 is a partially enlarged schematic diagram of Fig. 8;

Fig. 10 shows another way of lamination and splicing of the core material unit pieces shown in Fig. 4, wherein the turning directions of any two adjacent core material unit pieces are opposite;

Fig. 11 is a partially enlarged schematic diagram of Fig. 10;

Fig. 12 is a front view showing the structure of a thermoplastic composite core material according to the present invention, wherein the spliced shaft holes have various shapes, and the structural shapes of adjacent core material unit pieces are different.

Explanation of reference signs:

100 unit splice body 101 splice shaft hole

102 Geometry Highs 103 Geometry Lows

104 Geometry 105 Geometry 1st inner hole

106 geometry second inner hole 1 thermoplastic material molding equipment

1a First Extrusion Die 1b Second Extrusion Die

1c Thermal composite forming section 2 Geometry forming component

4 Cutting component 5 Guide positioning component

7 Gathering Components 8 Fusion Joining Components

10 flat sheets

20 sheet unit with 30 core unit

31 Flat core element 32 Geometric core element

A Structural layer B Functional layer

D1 first direction D2 second direction

D3 The third direction Z Vertical direction of assembly line platform

X Pipeline output direction Y Broadside output direction

a Included angle OO' Centerline of geometric inner hole

W Core element width direction L Core element length direction

Detailed ways

The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the embodiments of the present invention, unless stated to the contrary, the used orientation words such as "up, down, top, bottom" usually refer to the directions shown in the drawings or refer to vertical, vertical or The term used to describe the mutual positional relationship of each component in terms of the direction of gravity.

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

Exemplary embodiments of the present invention provide a thermoplastic composite core material and a production method and production equipment thereof. As shown in Figures 4 to 12, the thermoplastic composite core material of the present invention is a honeycomb core material, that is, the unit splicing body 100 shown in Figure 6, the unit splicing body 100 is composed of a plurality of The core material unit sheets 30 are stacked and spliced in the second direction D2. Wherein, the molded plate of the core unit sheet 30 is a double-layer sheet structure comprising a structural layer A and a functional layer B, the structural layer A is used to form a load-bearing structural material, and the functional layer B is used to provide various functional materials.

The existing thermoplastic honeycomb core materials usually increase the new functions of thermoplastic honeycomb core materials by adding functional fillers dispersedly in the matrix material of the honeycomb wall, such as flame retardancy, heat protection, shielding, sound absorption and other functions. However, this method is limited by the maximum proportion of functional fillers that can be added and the actual distribution. The performance is often highly dispersed and it is difficult to accurately control the structure and properties of the material. The functional effects of functional fillers are also greatly limited, resulting in the existing thermoplastic The honeycomb core material has a bottleneck in further improving the composite function.

In addition, there are mainly two types of thermoplastic honeycomb core materials on the market, one is the round tube honeycomb core material, that is, a round tube with a thicker wall thickness is extruded and then blown into a round tube with a smaller wall thickness. A plurality of round tubes are piled up and put into an oven for heating, and the round tubes are bonded to each other after heating to form a round tube honeycomb core material. The production of the round tube type honeycomb core material is simple but discontinuous and the production efficiency is low. Another method is to form a semi-honeycomb structure by absorbing plastic on the surface of the sheet, and then fold the formed sheet into a honeycomb structure. The production of the folded honeycomb core material is continuous but the control is complicated, and there is more material waste. Furthermore, whether it is a circular tubular honeycomb core material or a folded honeycomb core material, it needs to be formed by blow molding or blister production process, which is limited by processing pressure and plastic properties of thermoplastic materials. The maximum wall thickness of the thermoplastic honeycomb core material is limited and the wall is prone to breakage, which is not conducive to the addition of structural fillers or functional fillers, resulting in limited application of thermoplastic core materials and unable to meet the diverse needs in practical applications.

Compared with the existing thermoplastic honeycomb core material, the thermoplastic composite core material of the present invention maintains the advantages of light weight and heavy load of the original structural material, and the honeycomb wall of the thermoplastic composite core material of the present invention is a structural layer composite functional layer The double-layer sheet thermal composite structure can adaptively thermally composite different functional materials and structural materials to obtain comprehensive properties that cannot be achieved by a single structural material. Since the functional layer and the structural layer are independently layered, there is no restriction on the mixing ratio and dispersion, and the structure and performance of the material can be controlled more precisely. Furthermore, the functional layers of the thermoplastic composite core material of the present invention are distributed continuously, and the functional effects that can be achieved are remarkable. In addition, the functional layer and the structural layer used in the thermoplastic composite core material of the present invention have good compatibility, and physical or chemical compatibility can be produced between the two, such as wettability, reactivity, and mutual solubility. The strength is high, which meets the diverse needs in practical applications.

Further, referring to Fig. 1, the production method of thermoplastic composite core material of the present invention can realize continuous flow operation, high production efficiency, greatly reduce production cost, realize economical production, and do not need to adopt the production process of blister or blow molding, without Due to the limitation of wall thickness, thermoplastic composite core materials with larger wall thickness can be produced, and various reinforcing fillers or functional fillers can be added at the same time, without breaking the wall, which greatly expands the application occasions of the thermoplastic composite core material of the present invention .

Further, referring to Fig. 2 and Fig. 3, for the production method of thermoplastic composite core material of the present invention, correspondingly, the present invention also provides a kind of production equipment of thermoplastic composite core material, and the production equipment is composed of a plurality of relatively simple The composition of the device greatly reduces the production cost and realizes continuous mass production.

The thermoplastic composite core material of the present invention and its production method and production equipment will be described below.

Among them, in order to facilitate the description and understanding of the thermoplastic composite core material and its production method and production equipment of the present invention, the direction in which the flat sheet 10 is continuously output from the thermoplastic material molding equipment 1 along the assembly line is defined as the output direction X of the assembly line, that is, the flat sheet The length direction of 10; the width direction of the flat sheet 10 is defined as the broadside output direction Y of the flat sheet 10; the direction perpendicular to the assembly line platform is defined as the vertical direction Z. Referring to Figure 3, the origin of the coordinate system is set at the upstream of the thermoplastic material molding equipment 1, and the absolute coordinate system of each group of production equipment is jointly defined by the output direction X of the assembly line, the output direction Y of the wide side and the vertical direction Z of the assembly line platform . Define the core material unit sheet width direction as the third direction D3 of the unit splicing body 100; define the core material unit sheet length direction L as the first direction D1 of the unit splicing body 100; define the thickness direction of the unit splicing body 100 as the unit splicing body The second direction D2.

Referring to Fig. 1, the production method of thermoplastic composite core material of the present invention may comprise steps:

S11. The flat sheet 10 having the structural layer A and the functional layer B is formed by in-mold thermocompositing, and is continuously output along the output direction X of the assembly line;

S12. Divide and process the flat sheet 10 into a plurality of core material unit pieces 30 having the same width along the broadside output direction Y and belt-shaped along the pipeline output direction X, wherein at least part of the core material unit pieces 30 are on the sheet surface Process open geometry 104 with repeated representations along the pipeline output direction X;

S13. Stack and splice a plurality of core material unit pieces 30 along the broadside output direction Y to form a unit splicing body 100 . The unit splicing body 100 includes a plurality of axial hole structures distributed sequentially along the pipeline output direction X and spliced by geometric bodies 104 .

Wherein, in S11, the output method of the flat sheet 10 may be extrusion, casting, calendering or rolling processing. The flat sheet 10 is a double-layer sheet thermal composite structure with a structural layer A and a functional layer B. The materials of the structural layer A and the functional layer B are compatible, and can be thermally composited directly on the production line, that is, along the line The structural materials and functional materials that are output synchronously in the output direction X can be directly thermally compounded in the mold without binders, so that the double-layer sheet thermal composite structure can be directly formed and output along the output direction X of the assembly line, and the production process is simple and continuous. Moreover, the functional layer B can adaptively select different functional materials according to the required functions for thermal compounding with the structural material of the structural layer A. Optionally, the functional materials can be flame-retardant materials, sound-insulating materials, anti-corrosion materials, etc. Functional material of the present invention.

Moreover, since there is no blister or blow molding process in the first production method of the present invention, the thermoplastic composite material has no wall thickness limitation, that is, in the flat sheet 10 that is continuously output along the output direction X of the assembly line, the sheet of the structural layer A The thickness of the layer can be not less than 0.1 mm, and the structural strength of the honeycomb core formed thereby is high.

It should be noted that the flat sheet 10 can be formed by direct extrusion. Since the output width of the flat sheet 10 along the width output direction Y is limited, multiple groups of flat sheets can be output along the width output direction Y. 10, thereby increasing the number of geometric core material unit pieces 32 or flattened core material unit pieces 31 synchronously output along the broadside output direction Y, thereby expanding the production size of the unit assembly 100 to a large extent.

Further, according to the shape of the processed sheet and the sequence of dividing the sheet, S12 may include sub-steps:

S121. Divide and process the flat sheet 10 into a plurality of sheet unit belts 20 having the same width along the output direction Y of the broadside and in the shape of a belt along the output direction X of the assembly line;

S122, processing at least part of the sheet surface of the sheet unit belt 20 with non-closed geometrical bodies 104 that appear repeatedly along the pipeline output direction X, thereby forming a plurality of core material unit pieces 30 that are strip-shaped along the pipeline output direction X .

Alternatively, S12 may include substeps:

S121', processing the sheet surface of the flat sheet 10 with non-closed geometry 104 repeatedly presented along the pipeline output direction X;

S122', dividing and processing the flat sheet 10 whose surface has been processed into a plurality of core material unit pieces 30 having the same width along the output direction Y of the broadside and in the shape of belts along the output direction X of the assembly line.

Those skilled in the art can understand that the flat sheet 10 can be processed into a flat unit sheet 31 or a geometric core unit sheet 32 by adjusting the shape of the mold used to process the geometric body 104, and the geometric body 104 can be processed by rollers. Press, plate press or chain die extrusion, etc. At least part of the outer periphery of the mold used to process the geometric body 104 is formed with an edge crimping portion that is convex and extends along the broadside output direction Y of the flat sheet 10, so that the flat sheet 10 or the sheet unit belt 20 A geometric protruding portion perpendicular to the surface of the sheet is processed on the surface of the sheet material, and a geometric first interior that is not closed on the surface of the sheet material and penetrates the Y axis along the broadside output direction is formed on the geometric protruding portion. Hole 105 , ie forms geometry 104 . As shown in FIG. 3 , the processed core material unit piece 30 is processed with a geometric body 104 whose geometric inner hole centerline OO' is parallel to the broadside output direction.

Further, S13 may include:

Each core material unit piece 30 after splitting and processing is respectively turned over a predetermined angle, so that the length direction L of the turned over core material unit piece remains along the line output direction X, and the width direction W of the core material unit piece is in line with the wide side of the flat sheet 10. An included angle a is formed between the output directions Y; along the broadside output direction Y, the turned core material unit pieces 30 are collected and laminated to form a unit splicing body 100 . Wherein, in order to facilitate stacking and stacking each core material unit piece 30 on the production line, the rotation axis PP' of each core material unit piece 30 is along the output direction X of the line. The centerline OO' of the geometric inner hole of each core material unit piece 30 after turning over may be inclined to the assembly line platform. Optionally, as shown in FIG. 3 , the included angle a is 90°, and the geometric inner hole centerline OO' of each core material unit piece 30 after turning over is perpendicular to the assembly line platform, that is, each core material unit piece 30 after turning over and The flat sheet 10 is vertical.

Further, turning each of the divided and processed core material unit pieces 30 to preset angles may include:

The turning direction of any two adjacent core material unit pieces 30 is opposite; wherein, the first core material unit piece, the second core material unit piece and the third core material unit piece arranged in sequence along the broadside output direction Y Among them, the structural layer A of the second core material unit is aligned with the structural layer A of the first core material unit on one side along the output direction Y of the broadside, and the functional layer B of the second core material unit is aligned with the second core material unit on the other side. The functional layer B of the three-core unit sheet is aligned along the output direction Y of the broadside. As shown in Figure 10 and Figure 11, when two adjacent core material unit pieces 30 are turned in the opposite direction and spliced together, the combination of the splicing position is A-A-B-B contact, that is, the splicing position of two adjacent core material unit pieces Both sides are functional layer B or both are structural layer A.

Alternatively, turning each of the core material unit pieces 30 after division and processing to preset angles may also include:

Make the turning direction of any adjacent two core material unit pieces 30 the same; wherein, the first core material unit piece, the second core material unit piece and the third core material unit piece arranged in sequence along the broadside output direction Y Among them, the structural layer A of the second core material unit is aligned with the functional layer B of the first core material unit on one side along the broadside output direction Y, and the functional layer B of the second core material unit is aligned with the first core material unit on the other side. The structural layer A of the three-core unit sheet is aligned along the broadside output direction Y. As shown in Fig. 8 and Fig. 9, when two adjacent core material unit pieces 30 have the same turning direction and are spliced together, the combination mode of the splicing position is A-B-A-B contact, that is, the splicing of two adjacent core material unit pieces 30 On one side of the location is functional floor B and on the other side is structural floor A.

In addition, stacking and splicing a plurality of core material unit sheets 30 along the broadside output direction Y to form a unit splicing body 100 may further include:

Before lamination and splicing, move and adjust the core material unit piece 30 along the output direction X of the assembly line, so that in any two adjacent core material unit pieces 30, one has a geometrically high point 102 and the other has a geometrically low point 103 Alignment along broadside output direction Y. As shown in Fig. 3, Fig. 6, and Fig. 7, a plurality of core material unit pieces 30 are stacked and spliced along the broadside output direction Y to form a spliced unit 100, and one of any two adjacent core material unit pieces 30 The high point 102 of the geometric shape is aligned with the low point 103 of the other geometric shape along the output direction Y of the broadside, thereby forming a splicing axis that is distributed sequentially along the output direction X of the assembly line and runs through the vertical direction Z axially perpendicular to the flow platform Hole 101.

Wherein, it should be noted that, when any adjacent two core material unit pieces 30 have the same shape and the flipping direction is opposite, it is not necessary to adjust the position of the moving core material unit piece 30 along the output direction X of the assembly line so that any adjacent The geometrically high point 102 of one of the two core material dies 30 is aligned with the geometrically low point 103 of the other along the broadside output direction Y.

In some specific implementation manners, stacking and splicing a plurality of core material unit sheets 30 along the broadside output direction Y to form a unit splicing body 100 may include:

The contact surface of each core material unit piece 30 is coated with an adhesive layer, and the adjacent core material unit pieces 30 are connected by the adhesive layer; or the structural layer A or functional layer between any adjacent core material unit pieces 30 The layers B are connected by fusion bonding.

Specifically, after the flat sheet 10 is processed into the core material unit piece 30, colloid can be coated on the splicing contact surface of each core material unit piece 30 so as to form an adhesive layer, so that the stacked core material unit piece 30 can be folded together. Bonded to form a unit assembly 100 . Alternatively, the gathered and stacked core material unit sheets 30 may be bonded into the unit splicing body 100 by means of fusion bonding such as hot-melt splicing, ultrasonic splicing or infrared splicing.

Further, the first production method of the present invention also includes:

So that in the unit splicing body 100 formed by splicing, when the vertical direction of the sheet surface of the flat sheet 10 is the direction to bear the compressive load, the material volume utilization rate of the unit splicing body 100 is not less than 60%, preferably, the material volume The utilization rate is not less than 80%;

And/or, on the cross-section of the core material of the unit assembly 100 parallel to the sheet surface of the flat sheet 10, the planar void ratio is not lower than 40%, further, the planar void ratio is not lower than 60%.

For above-mentioned production method, the present invention also provides a kind of production equipment of thermoplastic composite core material, comprising:

Thermoplastic material forming equipment 1, used for thermocombining forming a flat sheet 10 having a structural layer A and a functional layer B in a mold and continuously outputting along the output direction X of the pipeline;

The core material unit piece processing and forming assembly is used to divide and process the flat sheet 10 into a plurality of core material unit pieces 30 with the same width along the broadside output direction Y and a strip shape along the pipeline output direction X, wherein at least part of the core material The sheet surface of the unit sheet 30 is processed with a non-closed geometric body 104 re-presented along the pipeline output direction X);

The unit splicing body splicing assembly is used to stack and splice a plurality of core material unit pieces 30 along the wide-side output direction Y to form a unit splicing body 100. A shaft hole structure.

Wherein, as shown in Fig. 2 and Fig. 3, the thermoplastic material molding equipment 1 includes a first extrusion die 1a and a second extrusion die 1b arranged up and down and a The thermocomposite molding section 1c of the molding extrusion port. The first extrusion die 1a and the second extrusion die 1b arranged up and down respectively extrude a compatible functional material sheet and a structural material sheet, and the two materials are subjected to in-mold thermal composite molding through the thermal composite molding section 1c to The flat sheet 10 of the double-layer sheet thermal composite structure that is directly formed into the structural layer A and the functional layer B can be directly output on the assembly line for continuous production.

In addition, the core material unit sheet processing and forming assembly may include a cutting assembly 4 and a geometric body forming assembly 2, the cutting assembly 4 is used to cut the flat sheet 10 or the flat sheet 10 with a geometric body 104 on the surface along the output direction X of the pipeline, the geometric body The molding assembly 2 is used to process and form a geometric bulge perpendicular to the surface of the sheet on the sheet surface of the flat sheet 10 or the sheet unit belt 20, and the geometric body 104 is formed with an open shape on the surface of the sheet and A geometric first inner hole 105 penetrating axially along the broadside output direction Y. As shown in FIG. 3 , the geometry forming component 2 uses a pressure roller component to process and shape the flat sheet 10 or the sheet unit belt 20 . And according to the difference in the sequence of cutting and geometric forming, the positions of the cutting assembly 4 and the geometric forming assembly 2 on the assembly line can be exchanged.

Further, the unit splicing body splicing assembly includes:

The guide and positioning assembly 5 is used to turn each core material unit piece 30 after division and processing at a preset angle, so that the length direction L of the turned core material unit piece remains along the pipeline output direction X, and the width direction W of the core material unit piece is in line with An included angle a is formed between the broadside output directions Y of the flat sheet 10;

Gathering assembly 7, used for gathering each core material unit sheet 30 along the broadside output direction Y;

The hot-melt connection component 8 is used for heating each core material unit sheet 30 to melt and bond the unit assembly 100 .

Wherein, the gathering component can be arranged separately, or each core material unit piece 30 can be gathered from both sides to the center through structural methods such as the narrowed guide rail side wall of the component. The hot-melt connection assembly 8 may be a heating box, or equipment such as ultrasonic welding or infrared heating, and the present invention is not limited thereto. At this time, the thermoplastic material forming equipment 1 , the core material unit piece processing and forming component, the guiding and positioning component 5 , the gathering component 7 and the hot-melt connection component 8 are arranged in sequence along the output direction X of the pipeline.

Optionally, the production equipment for thermoplastic composite core materials may also include:

Thermoplastic material forming equipment 1, used for thermocombining forming a flat sheet 10 with a structural layer and a functional layer in a mold and continuously outputting along the output direction X of the pipeline;

The core material unit piece processing and forming assembly is used to divide and process the flat sheet 10 into a plurality of core material unit pieces 30 with the same width along the broadside output direction Y and a strip shape along the pipeline output direction X, wherein at least part of the core material On the sheet surface of the unit sheet 30, an open geometry 104 repeatedly presented along the pipeline output direction X is processed;

A glue gun, for coating the bonding layer on the contact surface of each core material unit piece 30;

The guiding and positioning assembly 5 is used to turn each core material unit piece 30 coated with the adhesive layer on the contact surface at a preset angle, so that the length direction L of the turned core material unit piece remains along the output direction X of the pipeline, and the core material unit piece An angle a is formed between the width direction W and the broadside output direction Y of the flat sheet 10;

The unit splicing body splicing assembly is used to stack and splice a plurality of core material unit pieces 30 along the wide-side output direction Y to form a unit splicing body 100. A shaft hole structure.

The difference from the production equipment shown in FIG. 3 is that this production equipment uses a glue gun to apply glue to the contact positions of the core material unit pieces 30 to splice and bond them to form a unit spliced body 100 . The glue gun can be a roller body glue gun (not shown) with the same shape and structure as the pressure roller assembly of the geometry forming assembly 2, and the respective rotation axes of the pressure roller assembly and the roller body glue gun are all along the broadside output direction Y, and the roller body The peripheral wall of the roller body of the glue gun is formed with groove-shaped edge gluing parts spaced along the circumferential direction, and the peripheral wall of the roller body of the pressure roller assembly is formed with convex-shaped edge crimping parts spaced along the circumferential direction. The connecting portion and the edge glued portion are arranged in the same circumferential direction and the number of the two is the same. In addition, the thermoplastic material molding equipment 1 , the core material unit piece processing and molding component, the glue gun and the unit splicing body splicing component are arranged in sequence along the output direction X of the pipeline.

The above is the production method and production equipment of the thermoplastic composite core material according to the present invention. The structure of the thermoplastic composite core material according to the present invention will be described in detail below with reference to FIGS. 4 to 12 .

The thermoplastic composite core material of the present invention is a honeycomb core material, that is, a unit splicing body 100 shown in FIG. sheet 30, at least part of the sheet surface of the core unit sheet 30 is formed with geometric bodies 104 that are distributed sequentially along the length direction L of the core unit sheet and are non-closed. Wherein, as shown in Fig. 4 and Fig. 5, the core unit sheet 30 is a double-layer sheet structure comprising a structural layer A and a functional layer B, the structural layer A is used to form a structural material for bearing loads, and the functional layer B is It is a functional material used to provide various functions. There is compatibility between the structural material of the structural layer A and the functional material of the functional layer B, that is, there is physical and chemical compatibility between the two. Such as wettability, reactivity and miscibility. Thus, the structural layer A and the functional layer B can be thermally compounded directly in the mold without using an adhesive. In terms of appearance, in the unit splicing body 100 of the present invention, there are a plurality of axial hole structures spliced by geometric bodies 104 that are distributed sequentially at least along the first direction D1, and the axial hole structure includes spliced axial holes axially along the third direction D3 101 and the circumferentially closed shaft hole peripheral wall surrounding the spliced shaft hole 101.

Further, the functional layer B can be, for example, one or more functional combination layers in a flame-retardant layer, an anti-ultraviolet layer, a color layer, a heat-resistant or heat-transfer layer, a magnetic-permeable or magnetic-resistant layer, an anti-corrosion layer, or a sound-insulating layer and other functional material layers, the present invention is not limited thereto, and may also be other functional material layers such as heat insulating layers.

Wherein, optionally, the material of the functional layer B includes a flame-retardant filler-filled polymer, an anti-ultraviolet filler-filled polymer, a pigment filler-filled polymer, a heat-resistant or heat-transfer filler-filled polymer, a magnetically permeable or magnetic-resistant filler-filled polymer One or more combinations of anti-corrosion filler-filled polymers and sound-insulating filler-filled polymers.

In addition, in order to ensure that the structural layer A has sufficient mechanical strength, the sheet thickness of the structural layer A is not less than 0.1 mm.

In addition, the diameter of the circumscribed circle of the spliced shaft hole 101 of any shape can be preferably set to not less than 1mm; The ratio of the diameters is preferably set to be no greater than 200, so that the core material can achieve a better effect of heavy load and light weight.

Compared with traditional metal forming materials such as steel and aluminum, thermoplastic materials have the advantages of light weight, good insulation, corrosion resistance, and easy bonding and welding. In addition, the plastic sheet can be recycled, which is convenient for secondary processing and saves resources. Wherein, the material of the structural layer A may include thermoplastic polymers, filled thermoplastic polymers, fiber-reinforced thermoplastic resin-based composite materials, plastically deformable paper and/or steel-plastic composites. Specifically, the thermoplastic polymer can be polypropylene, polyethylene, polyamide, thermoplastic polyester, polyvinyl chloride, polystyrene, polycarbonate, polyphenylene ether, thermoplastic elastomer, multi-component copolymerized thermoplastic, polymethacrylic acid One of methyl ester, polyphenylene sulfide, polyether ether ketone and polyimide or a blend of more than one of them.

In addition, fillers in filler-filled thermoplastic polymers can be waxes, talc, carbon black, silica, kaolin, calcium carbonate, stearic acid, calcium stearate, whiskers, titanium dioxide, iron oxides, pigments, barrier One or more combinations of fuel and antioxidant. The fibers in the fiber-reinforced thermoplastic resin-based composite material can be one or more of organic fibers, inorganic fibers, metal fibers, polymer fibers, and plant fibers. Specifically, the fibers in fiber-reinforced thermoplastic resin matrix composites can be glass fibers, carbon fibers, basalt fibers, steel fibers, polypropylene fibers, polyester fibers, ultra-high molecular weight polyethylene fibers, polyimide fibers and hemp fibers One or a combination of several of them.

In the thermoplastic composite core material of the present invention, according to the different ways of combining and splicing the core material unit pieces 30, it can be divided into two ways of combining and splicing. In the first combined splicing method shown in Figures 10 and 11, the turning directions of any adjacent two core material unit pieces 30 are opposite and sequentially stacked and spliced. At this time, the combination of the splicing positions between the core material unit pieces 30 The method is A-A-B-B contact, that is, both sides of the splicing position of two adjacent core material unit sheets are both functional layer B or structural layer A. In other words, when the unit assembly 100 at least includes the first core material unit, the second core material unit and the third core material unit that are sequentially stacked and spliced along the second direction D2, the structural layer A of the second core material unit The structural layer A of the first core material unit piece on one side is abutted and connected, and the functional layer B of the second core material unit piece is abutted and connected with the functional layer B of the third core material unit piece on the other side.

In the second combined splicing method shown in Figures 8 and 9, any adjacent two sheet unit belts 20 have the same overturn direction and are stacked and spliced sequentially. The method is A-B-A-B contact, that is, one side of the splicing positions of two adjacent core material unit pieces 30 is the functional layer B, and the other side is the structural layer A. In other words, when the unit assembly 100 at least includes the first core material unit sheet, the second core material unit sheet and the third core material unit sheet sequentially stacked and spliced along the second direction D2, the structural layer A of the second core material unit sheet and The functional layer B of the first core material unit piece on one side is abutted and connected, and the functional layer B of the second core material unit piece is abutted and connected with the structural layer A of the third core material unit piece on the other side.

In the thermoplastic composite core material of the present invention, referring to Fig. 12, the core material unit piece 30 can be divided into a geometric core material unit piece 32 and a flat core material unit piece 31, the surface of the geometric core material unit piece 32 is processed with a geometric body 104, and the flat core material unit piece No geometry 104 is processed on the surface of the material unit sheet 31 . Wherein, the core material units 30 stacked and spliced along the second direction D2 in the unit splicing body 100 shown in FIGS. distributed at equal intervals along the first direction D1. But the present invention is not limited thereto. As shown in FIG. 12 , the geometrical core material unit pieces 32 of the unit splicing body 100 stacked and spliced along the second direction D2 may be different. Alternatively, the geometries 104 formed on the sheet surfaces of the geometric core element sheets 32 may be different. Alternatively, the geometric bodies 104 formed on the sheet surface of the geometric core unit sheet 32 are not equally spaced along the first direction, or the like.

Wherein, the geometric body 104 is formed as a geometric raised portion raised from the sheet surface of the geometric core unit sheet 32 along the second direction D2, and a first inner hole 105 of the geometric body axially along the third direction D3 is formed in the geometric raised portion, The first inner hole 105 of the geometric body is open on one side along the second direction D2, and the one-sided opening end of the first inner hole 105 of the geometric body is closed by the adjacent core material unit piece 30 to form at least part of the spliced shaft hole 101. The bore centerline OO' is along the third direction D3. In addition, a non-closed second inner hole 106 may be formed between adjacent geometric bodies 104 , and the non-closed openings of the first inner hole 105 and the second inner hole 106 of the geometric body face opposite to each other. The geometric body 104 can be a press-formed structure, and the first inner hole 105 of the geometric body can be a press-formed hole and can be in various shapes such as regular hexagonal holes, diamond-shaped holes, waist-shaped holes, or irregular shaped holes.

Wherein, at least one geometric core material unit piece 32 is included in any two adjacent core material unit pieces 30 of the unit assembly 100 stacked and spliced along the second direction D2. In the axial hole structure formed by splicing any two adjacent core material unit pieces 30, each spliced axial hole 101 includes at least one geometric first inner hole 105 or one geometric second inner hole 106, which is used to seal at least The inner bore circumferential closure of a first geometric body bore 105 or a second geometric body bore 106 may be a flat wall or comprise at least part of the geometric body 104 . As shown in FIG. 12 , the splicing shaft hole 101 may include one geometrically first inner hole 105 or one geometrically second inner hole 106 , or may include multiple geometrically first inner holes 105 or multiple geometrically second inner holes 106 . The inner hole circumferential closure structure may be a flat sheet wall of the flat core cell 31 or at least part of the geometric body 104 of the geometric core cell 32 .

In some specific embodiments, in each geometric core material unit piece 32, the same respective geometric bodies 104 are distributed with equidistant steps along the first direction D1, and the geometric shape high point surface formed by each geometric shape high point 102 and the geometric shape high point surface composed of each geometric shape high point 102 The geometric low points formed by the geometric low points 103 are formed as parallel planes along the first direction D1.

Optionally, as shown in Fig. 6 and Fig. 7, the unit splicing body 100 is in the shape of a cuboid, the first direction D1 and the second direction D2 are perpendicular to the two side length directions of the unit splicing body 100, and the second direction D2 is vertical On the sheet surface of the core unit sheet 30 , the third direction D3 is the thickness direction of the unit assembly 100 . At this time, the splicing shaft hole 101 penetrates along the thickness direction of the unit splicing body 100 , that is, the centerline OO′ of the geometric inner hole is along the thickness direction of the unit splicing body 100 . Of course, the present invention is not limited thereto, and the orientations of various directions can be interchanged. In addition, the angles between the first direction D1 , the second direction D2 and the third direction D3 are not limited to forming right angles, and may also be, for example, acute angles.

Specifically, the unit assembly 100 may at least include a first core material unit piece, a second core material unit piece and a third core material unit piece sequentially stacked and spliced along the second direction D2, and the second core material unit piece adopts a geometric shape height The point 102 abuts and connects with the geometrically low point 103 of the first core material cell on one side, and abuts and connects with the geometrically high point 102 of the third core material cell on the other side through the geometrically low point 103, Thereby splicing into the whole unit splicing body 100 . In the adjacent core material unit pieces, the geometrically high point 102 and the geometrically low point 103 that are abutting to each other form arc surface contact, point contact or planar contact of thermal composite connection. Among them, as shown in Fig. 8 and Fig. 10, the arc surface contact of thermal compound connection is formed between the geometric shape high point 102 and the geometric shape low point 103 connected by abutting connection; as shown in Fig. 12, the geometric shape of abutting connection The high point 102 and the geometrically low point 103 form a point contact or planar contact for a thermal compound connection.

It should be noted that, as can be seen from FIG. 12 , when the geometric core material unit pieces 32 of different shapes and structures are combined and spliced, not all geometric high points 102 and geometric low points 103 can be connected correspondingly, and some geometric high points 102 or geometric low point 103 can be suspended. When the shapes and structures of each core material unit piece 30 are the same, it is only necessary to make any two adjacent core material unit pieces 30 Flipping in opposite directions about an axis of rotation parallel to the first direction D1, whereby the geometry 104 on one core element 30 is reversely flipped with the geometry 104 on the other core element 30 in the second direction D2 Align and connect in one piece. Wherein, in the inverted core material unit piece 30 , the positions of the geometrically low point 103 and the geometrically high point 102 are exchanged. Of course, it is also possible to make any two adjacent core material unit pieces 30 turn over around the rotation axis parallel to the first direction D1 in the same turning direction, and move and adjust along the first direction D1 to stagger a certain distance, thus, the first The first geometric bodies on the core material unit piece and the second geometric bodies on the adjacent second core material unit piece are alternately arranged in sequence along the first direction D1 and integrally connected. Based on the above two arrangement and inversion rules, the entire unit mosaic 100 can be formed correspondingly.

In order to obtain a thermoplastic composite core material that meets the requirements and can realize light weight and heavy load, in the formed unit splicing body 100 shown in FIG. Quantify. Referring to Fig. 6, in any plane defined by the first direction D1 and the second direction D2 of the unit splicing body 100 and intersecting with the unit splicing body 100 entity, that is, in any cross-sectional plane of the unit splicing body 100, the plane void ratio It should not be lower than 40%, and further, the planar void ratio should not be lower than 60%. In the above-mentioned cross-sectional plane of the unit splicing body 100 , the plane porosity is the ratio of the sum of the hole cross-sectional areas of each spliced shaft hole 101 to the total plane area of the cross-sectional plane.

While reducing weight, in order to achieve heavy loads, in addition to material selection, the volume utilization of materials should also be improved, that is, the mass ratio or volume ratio of the effective part that can bear the load to the overall part along the direction of the load force. Generally speaking, the real force-bearing part along the load-bearing direction is the effective part bearing the load, while the material part or hollow part perpendicular to the load-bearing direction is the invalid part bearing the load, and the material volume utilization rate of the invalid part is 0 . As an example, in FIG. 6 , when the third direction D3 is the direction of bearing the compressive load, the material volume utilization rate of the unit assembly 100 is not lower than 60%, preferably, the material volume utilization rate is not lower than 80%. Among them, regarding the definition of material volume utilization rate, when the material is subjected to compressive load, the ratio of the material volume of the highest height part of the material along the load direction to the total material volume is is the material volume utilization.

In summary, the present invention provides a thermoplastic composite core material and its production method and production equipment. The thermoplastic composite core material of the present invention can adaptively thermally composite different functional materials and structural materials into a honeycomb core material. This not only maintains the advantages of light weight and heavy load of the original structural materials, but also obtains comprehensive properties that cannot be achieved by a single component material by combining with functional materials, such as flame retardancy, shielding performance, and sound absorption performance. In addition, the honeycomb wall of the thermoplastic composite core material of the present invention is a double-layer sheet thermal composite structure in which the structural layer is combined with the functional layer. The functional layer is continuously distributed and has remarkable functional effects. High strength, can be used in various fields that require high light weight and high strength. At the same time, it can also add flame retardant function, anti-corrosion function, sound insulation function, etc. according to the special requirements of various fields, to meet the diversification of practical applications. need.

At the same time, the production method and production equipment of the present invention solve the problems of high manufacturing cost of traditional honeycomb core materials, the inability to add functional fillers and reinforcing fillers, and waste of materials, and realize the advantages of low cost and filling of the honeycomb core and energy-saving The production and manufacturing of thermoplastic composite materials have effectively expanded the application field of thermoplastic composite materials.

To sum up, the double-layer thermoplastic composite core material with filler material and thicker wall thickness of the present invention can be applied in various fields that require high light weight and high strength, such as various types of vehicles with increasingly heavy loads. Vehicles, especially heavy-duty electric coal trains, or electric logistics vehicles that need to reduce the body due to insufficient battery life. Thus, the present invention also provides a device using the above-mentioned thermoplastic composite core material according to the present invention. Specifically, the equipment may be related equipment or devices in the fields of railway vehicles, road vehicles, construction, wind power, mining, aerospace and the like.

The optional implementations of the embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above-mentioned embodiments. Within the scope of the technical concept of the embodiments of the present invention, the embodiments of the present invention can be Various simple modifications are made to the technical solution, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

In addition, it should be noted that the various specific technical features described in the above specific implementation manners can be combined in any suitable way if there is no contradiction. In order to avoid unnecessary repetition, the embodiments of the present Possible combinations are not described separately.

In addition, various implementations of the embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the embodiments of the present invention, they should also be regarded as the content disclosed in the embodiments of the present invention.

Claims (19)

1. the production method of thermoplastic composite core material, comprising:

Mo Neire composite molding has the flat sheets (10) of structure sheaf (A) and functional layer (B) and along assembly line outbound course (X) Lasting output；

By the flat sheets (10) division processing at wide along broadside outbound course (Y) and along the assembly line outbound course (X) it is in band-like multiple core material unit pieces (30), adds wherein at least in the sheet surface of the core material unit piece (30) of part Work, which has, repeats the non-closed solid (104) presented along the assembly line outbound course (X)；

Multiple core material unit pieces (30) are spliced into unit spliced body (100), institute along the broadside outbound course (Y) stacking Stating unit spliced body (100) includes being sequentially distributed along the assembly line outbound course (X) and being spliced by the solid (104) The multiple axial aperture structures formed.

2. the production method of thermoplastic composite core material according to claim 1, wherein in the flat sheets (10), The functional layer (B) has compatibility with for the load bearing structure sheaf (A).

3. the production method of thermoplastic composite core material according to claim 1, wherein held along assembly line outbound course (X) In the flat sheets (10) of continuous output, the lamellar spacing of the structure sheaf (A) is not less than 0.1mm.

4. the production method of thermoplastic composite core material according to claim 3, wherein the axial aperture structure includes splicing axis Hole (101) and the circumferentially closed axis hole peripheral wall for surrounding splicing axis hole (101), the splicing axis hole of arbitrary shape (101) external diameter of a circle is not less than 1mm；And/or the hole axial length of the splicing axis hole (101) of arbitrary shape and the spelling The diameter ratio of the circumscribed circle in spindle hole (101) is not more than 200.

5. the production method of thermoplastic composite core material according to claim 1, wherein by multiple core material unit pieces (30) being spliced into unit spliced body (100) along the broadside outbound course (Y) stacking includes:

Each core material unit piece (30) after division processing is overturn into predetermined angle respectively, so that the core material unit after overturning Leaf length direction (L) is kept along the assembly line outbound course (X), core material unit piece width direction (W) and the flat sheets (10) angle (a) is formed between broadside outbound course (Y)；

Each core material unit piece (30) after overturning is collapsed and is laminated along the broadside outbound course (Y) and is spliced into unit Spliceosome (100).

6. the production method of thermoplastic composite core material according to claim 5, wherein each core material unit piece (30) Rotation axis (PP ') along the assembly line outbound course (X).

7. the production method of thermoplastic composite core material according to claim 6, wherein will be each described after division processing It includes: to make the overturning side of two core material unit pieces (30) of arbitrary neighborhood that core material unit piece (30) overturns predetermined angle respectively To opposite；

Wherein, in the first core material unit piece, the second core material unit piece and the third successively arranged along the broadside outbound course (Y) In core material unit piece, the institute of the first core material unit piece of the structure sheaf (A) and side of the second core material unit piece Structure sheaf (A) is stated to be aligned along the broadside outbound course (Y), the functional layer (B) of the second core material unit piece with it is another The functional layer (B) of the third core material unit piece of side is aligned along the broadside outbound course (Y).

8. the production method of thermoplastic composite core material according to claim 6, wherein will be each described after division processing It includes: to make the overturning side of two core material unit pieces (30) of arbitrary neighborhood that core material unit piece (30) overturns predetermined angle respectively To identical；

Wherein, in the first core material unit piece, the second core material unit piece and the third successively arranged along the broadside outbound course (Y) In core material unit piece, the institute of the first core material unit piece of the structure sheaf (A) and side of the second core material unit piece Functional layer (B) is stated to be aligned along the broadside outbound course (Y), the functional layer (B) of the second core material unit piece with it is another The structure sheaf (A) of the third core material unit piece of side is aligned along the broadside outbound course (Y).

9. the production method of thermoplastic composite core material according to claim 8, wherein by multiple core material unit pieces (30) unit spliced body (100) are spliced into along the broadside outbound course (Y) stacking further include:

Before stacking splicing, along the mobile adjustment core material unit piece (30) of the assembly line outbound course (X), so that arbitrarily In the core material unit piece (30) of adjacent two, the geometry high point (102) of one and the geometry low spot of another one (103) it is aligned along the broadside outbound course (Y).

10. the production method of thermoplastic composite core material according to claim 5, wherein by multiple core material unit pieces (30) being spliced into unit spliced body (100) along the broadside outbound course (Y) stacking includes:

Bonding layer is coated in the contact surface of each core material unit piece (30), and connects adjacent institute by the bonding layer State core material unit piece (30)；Or

Make between the structure sheaf (A) or the functional layer (B) between the core material unit piece (30) of arbitrary neighborhood with molten Melt bonding way to be connected.

11. the production method of thermoplastic composite core material according to claim 1, wherein the material packet of the structure sheaf (A) Include thermoplastic polymer, the fibre-reinforced thermoplastic resin based composite material, plastic deformation of thermoplastic polymer, filler filling Paper and/or steel plastic compount object.

12. the production method of thermoplastic composite core material according to claim 11, wherein the thermoplastic polymer is poly- Propylene, polyethylene, polyamide, thermoplastic polyester, polyvinyl chloride, polystyrene, polycarbonate, polyphenylene oxide, thermoplastic elastomer (TPE), One of multi-component copolymer thermoplastic, polymethyl methacrylate, polyphenylene sulfide, polyether-ether-ketone and polyimides or in which A variety of blends；

Alternatively, the filler in the thermoplastic polymer of filler filling is wax, talcum powder, carbon black, white carbon black, kaolin, carbon One of sour calcium, stearic acid, calcium stearate, whisker, titanium dioxide, iron oxide, pigment, fire retardant and antioxidant or in which more The composition of kind；

Alternatively, the fiber in the fibre-reinforced thermoplastic resin based composite material is organic fiber, inorfil, metal fibre One of dimension, macromolecular fibre, plant fiber are a variety of；

Alternatively, the fiber in the fibre-reinforced thermoplastic resin based composite material is glass fibre, carbon fiber, basalt fibre In dimension, steel wire fibre, polypropylene fibre, polyester fiber, ultra high molecular weight polyethylene fiber, polyimide fiber and flaxen fiber A kind of or many of composition.

13. the production method of thermoplastic composite core material according to claim 1, wherein the functional layer (B) is fire-retardant Layer, UV-resistant layer, color layers, thermal resistance or heat transfer layer, saturating magnetic or one or more of resistance magnetosphere, antibiotic layer or puigging Function combination layer.

14. the production method of thermoplastic composite core material according to claim 1, wherein the material packet of the functional layer (B) Fire-retardant filler filled polymer, uvioresistant filler filled polymer, paint filler filled polymer, thermal resistance or heat-transfer filler is included to fill out Fill polymer, saturating magnetic or resistance magnetic filler filled polymer, antibacterial filler filled polymer, one in sound insulation filler filled polymer Kind or numerous compositions.

15. the production method of thermoplastic composite core material described according to claim 1~any one of 14, wherein the life Production method further include:

So that in the unit spliced body (100) of spicing forming type, when the flat sheets (10) sheet surface it is vertical Direction is when bearing compressive load direction, and the material volume utilization rate of the unit spliced body (100) is not less than 60%, preferably , material volume utilization rate is not less than 80%；

The core material cross section of the sheet surface for being parallel to the flat sheets (10) in the unit spliced body (100) and/or On, plane voidage is not less than 40%, and further, the plane voidage is not less than 60%.

16. the production equipment of thermoplastic composite core material, comprising:

Thermoplastic material molding equipment (1), for there is smooth of structure sheaf (A) and functional layer (B) in Mo Neire composite molding Material (10) is simultaneously persistently exported along assembly line outbound course (X)；

Core material unit piece machine-shaping component is used for the flat sheets (10) division processing at along broadside outbound course (Y) It is wide and be in band-like multiple core material unit pieces (30), the wherein at least core of part along the assembly line outbound course (X) It is machined in the sheet surface of material unit piece (30) and repeats the non-closed solid presented along the assembly line outbound course (X) (104)；

Unit spliced body splicing component, for multiple core material unit pieces (30) to be laminated along the broadside outbound course (Y) It is spliced into unit spliced body (100), the unit spliced body (100) includes being sequentially distributed along the assembly line outbound course (X) And the multiple axial aperture structures being spliced to form by the solid (104).

17. the production equipment of thermoplastic composite core material according to claim 16, wherein the thermoplastic material molding equipment (1) include the first extrusion die (1a) arranged up and down and the second extrusion die (1b) and be located at first extrusion die The hot composite molding section (1c) of the molding extrusion of (1a) and second extrusion die (1b).

18. the production equipment of thermoplastic composite core material according to claim 16, wherein the unit spliced body splicing group Part includes:

Guide-localization component (5), for each core material unit piece (30) after division processing to be overturn predetermined angle respectively, So that the core material unit leaf length direction (L) after overturning keeps along the assembly line outbound course (X), the core material unit Angle (a) is formed between piece width direction (W) and the broadside outbound course (Y) of the flat sheets (10)；

Gather component (7), for collapsing each core material unit piece (30) along the broadside outbound course (Y)；

Melting adhered component (8), for heating each core material unit piece (30) with melting adhered into unit spliced body (100)。

19. the production equipment of thermoplastic composite core material, comprising:

Thermoplastic material molding equipment (1), for there is smooth of structure sheaf (A) and functional layer (B) in Mo Neire composite molding Material (10) is simultaneously persistently exported along assembly line outbound course (X)；

Core material unit piece machine-shaping component is used for the flat sheets (10) division processing at along broadside outbound course (Y) It is wide and be in band-like multiple core material unit pieces (30), the wherein at least core of part along the assembly line outbound course (X) It is machined in the sheet surface of material unit piece (30) and repeats the non-closed solid presented along the assembly line outbound course (X) (104)；

Glue rifle coats bonding layer for the contact surface in each core material unit piece (30)；Unit spliced body splicing component, For multiple core material unit pieces (30) to be spliced into unit spliced body (100), institute along the broadside outbound course (Y) stacking Stating unit spliced body (100) includes being sequentially distributed along the assembly line outbound course (X) and being spliced by the solid (104) The multiple axial aperture structures formed.