CN211416363U

CN211416363U - Fiber reinforced foamed composite material, foaming device and continuous production line

Info

Publication number: CN211416363U
Application number: CN201920746809.7U
Authority: CN
Inventors: 俞学良; 朱旭华; 许嘉浚
Original assignee: Huzhou Shouzhen New Material Technology Co ltd
Current assignee: Huzhou Shouzhen New Material Technology Co ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-09-04
Anticipated expiration: 2029-05-22

Abstract

A device and a continuous production line for producing fiber reinforced foaming composite materials comprise a distribution frame, a glue injection box, a foaming device, a forming die and a traction device, wherein the distribution frame is used for enabling fiber materials to be spatially distributed according to design requirements; the glue injection box comprises an infiltration channel, a glue injection channel and a discharge channel, the glue injection box is provided with a plurality of infiltration channels and glue injection channels, the foaming device is in a tunnel structure arrangement, one end of the foaming device is communicated with the glue injection box, the other end of the foaming device is communicated with the forming die, the glue injection box is close to an air supply device arranged on one side of the foaming device, and the forming die is provided with a heating device. The fiber material passes through the infiltration channel and is infiltrated by the liquid matrix material injected into the infiltration channel through the glue injection channel to form a composite material precursor, the composite material precursor passes through the discharge channel and enters the foaming device for pre-foaming and then enters the forming die for complete foaming and curing or shaping, and a final composite material product is formed. Different fiber and/or liquid matrix materials can be infiltrated in different infiltration channels to form different composite material precursors, so that different parts of the finally formed composite material have different material components, different functions and different performances.

Description

Fiber reinforced foamed composite material, foaming device and continuous production line

Technical Field

The utility model relates to a combined material pultrusion technical field, concretely relates to fibre reinforced foam composite and foaming device and continuous production line.

Background

Composite materials are materials with distinct phase separation characteristics formed by mixing two or more materials, the morphology and the performance of the composite materials are different from those of any one of the materials alone, the main components of the composite materials are matrix materials and reinforcing materials, and fibers are the most commonly used reinforcing materials. In general, composite materials refer to materials in their final form after molding, while materials in their form before final molding after mixing of matrix materials with reinforcing materials are referred to as composite precursors.

The continuous fiber reinforced foamed composite material can fully exert the strength advantage of the fiber, can reduce the density of the composite material, is a low-density high-strength composite material, and has wide application prospect, such as replacing wood to manufacture sleepers, door and window frames, building floors, maintenance structures, gallery slabs and the like. The patent application No. 200610103934.3 discloses a glass fiber reinforced polyurethane composite sleeper and its manufacturing equipment and method, however, this process adopts the method that the liquid matrix material, namely polyurethane resin, is sprayed on the glass fiber to wet the glass fiber to form the composite material precursor, then the composite material precursor is solidified into the composite material by entering the drying tunnel along with the mould; the method is similar to a free foaming process of a continuous plate, and has several problems which cannot be solved: 1, because the fiber distribution in the composite material is realized only by freely foaming and filling the die cavity in the forming die by the composite material precursor, the fiber can not be positioned according to the designed space position, the fiber distribution position can not be designed according to the stress distribution, the fiber reinforcing effect can be exerted to the maximum extent, and products with complex shapes can not be manufactured; 2. because the fibers are infiltrated by a method of spraying the liquid matrix material onto the fibers, the fibers are difficult to infiltrate rapidly, so that the interface strength between the matrix material and the fiber material is influenced, the full extension is finally influenced, the controllable distribution is difficult to realize, the thickness of the manufactured product is limited, meanwhile, a special foaming device is not used for carrying out controllable pre-foaming on the product in the prior art, the foaming and shaping processes are generally directly finished in a forming die, the continuous production is difficult to realize, and the above reasons restrict the performance of the composite material; meanwhile, the method is difficult to quickly soak a large amount of fibers at one time, so that a large-size composite material is difficult to manufacture; 3. the mould is complicated and the investment is large. There is a need in the art for improvements.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a fiber reinforcement foaming combined material's continuous production line distributes fiber material in advance through the distribution frame, then fiber material loops through the injecting glue box, foaming device and forming die, the injecting glue box makes liquid matrix material soak in fiber material rapidly and fully, foaming device makes liquid matrix material foam in advance and then accomplish abundant foaming in getting into forming die again, guarantee that the fiber material in the final shaping combined material distributes and fully extends according to the position of design.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a continuous production line for fiber reinforced foamed composite material, comprising:

the distribution frame 1 is used for enabling the fiber materials passing through the distribution frame 1 to enter the glue injection box according to a distribution state;

the glue injection box 2 comprises a soaking channel 21 for fiber material impregnation and a glue injection channel 22 for liquid matrix material to enter the soaking channel 21, wherein the soaking channel 21 comprises a feed inlet 211 for fiber material to enter and a discharge outlet 212 for composite material precursor formed by liquid matrix material impregnation fiber material to pass through, and the area of the feed inlet 211 is larger than or equal to that of the discharge outlet 212;

the foaming device 3 is provided with a continuously through foaming cavity; one end of the foaming device 3 is correspondingly arranged or connected with a discharge port 212 of the glue injection box 2, the other end of the foaming device 3 is correspondingly arranged or connected with a forming die 4, a composite material precursor enters the foaming device 3 through the discharge port 212 and is pre-foamed in the foaming device 3, the length L of the foaming device 3 is not more than s x t, wherein s is the advancing speed of the composite material precursor, and t is the time from the beginning of foaming and expansion to the stopping of expansion of the composite material precursor in the foaming device 3;

the forming die 4 is used for allowing the composite material precursor to enter the forming die 4 for curing or shaping after passing through the foaming device 3 to form a final composite material;

and the composite material is drawn out of the forming die 4 by the drawing device 8 after being cured or shaped in the forming die 4.

By adopting the technical scheme, before the fiber material is infiltrated by the liquid matrix material, the fiber material is distributed and arranged in space through the distribution frame to form the required fiber space arrangement shape and space distribution position, the fiber material enters the infiltration channel, the liquid matrix material is injected into the infiltration channel through the glue injection channel, the fiber material is infiltrated by the liquid matrix material through the infiltration channel to form a composite material precursor, then the mixture enters a foaming device for pre-foaming, then enters a forming die for complete foaming and curing or shaping, the area of a feed inlet of the infiltration channel is larger than or equal to that of a discharge outlet, the internal pressure of the liquid matrix material in the infiltration channel is increased, the finally-formed composite material fiber material and the liquid matrix material are fully infiltrated, and the fiber material in the finally-formed composite material is distributed and fully extended according to the design.

Further, the distribution frame is including the distribution plate, set up the distribution hole that is used for the fiber material to pass through that runs through the distribution plate on the distribution plate, the distribution hole is poroid or strip seam form, and fiber material accomplishes fiber material distribution in the space through whole or partial distribution hole simultaneously.

By adopting the technical scheme, an operator can adjust the distribution of the fiber material in the composite material by adjusting the positions of the distribution holes through which the fiber material is arranged, so that the internal distribution of the fiber material in the composite material is ensured not to change. When the distribution holes are in a hole shape, the fiber yarn material is suitable to be penetrated through, when the distribution holes are in a strip seam shape, the fiber fabric is suitable to pass through, and the shape of the strip seam, such as an arc shape and a broken line shape, can be changed into an arc surface shape or a broken line surface shape from a plane shape, so that the structure of the fiber fabric in the composite material is further adjusted, and the structure and the performance index of the composite material are adjusted. Meanwhile, the distribution of the fiber materials in the cross section of the composite material is changed through the distribution of the distribution hole arrangement, the fiber materials can be uniformly distributed, can also be distributed according to different shapes, and can also be distributed at different positions with different densities, so that the structure and performance indexes of the composite material are further adjusted.

Furthermore, the infiltration channel is a continuous channel, and the area of the feed inlet is larger than that of the discharge outlet; or the infiltration channel 21 is a continuous channel and the cross section of the infiltration channel gradually decreases or decreases in a step shape from the feed port 211 to the discharge port 212; or the cross section of the part of the infiltration channel close to one side of the discharge hole is gradually reduced.

By adopting the technical scheme, the internal pressure of the liquid matrix is increased, and the infiltration is ensured to be sufficient.

Further, the height of the discharge hole is less than or equal to 20 mm. The device is used for controlling the thickness of the composite material coming out of the single infiltration channel, ensuring that the composite material is easy to heat and uniformly heated, and ensuring the efficiency of subsequent foaming.

Furthermore, the inner wall of the infiltration channel 21 is further provided with a guide groove 221, and the guide groove 221 is annularly arranged along the cross section of the inner wall of the infiltration channel 21.

Further, the glue injection channel 22 is a vertical channel 222, the vertical channel 222 is disposed between the feed port 211 and the discharge port 212 and penetrates through the wetting channel 21, and the guide groove 221 is communicated with the vertical channel 222.

Furthermore, at least 2 soaking channels 21 are arranged in the glue injection box 2, and all the soaking channels 21 are communicated with the glue injection channel 22; or the number of the glue injection channels 22 is the same as that of the infiltration channels, and the glue injection channels are respectively communicated with the corresponding infiltration channels 21.

Further, the foaming device 3 further comprises a heating device 6 for foaming the liquid base material, and the heating device 6 comprises one or more combinations of a hot air circulation device, a microwave heating device, an electromagnetic heating device and an infrared heating device.

Further, an air supply device 5 is arranged on one side of the glue injection box 2 close to the foaming device 3, the air supply device 5 comprises a fan 52 and an air supply pipe 54 communicated with the fan 52, and the air supply pipe 54 supplies air into the foaming device 3.

Further, when the number of the infiltration channels 21 in the glue injection box 2 is two or more, the air supply pipe 54 is disposed between two adjacent discharge ports 212, the air supply pipe 54 is disposed on a side close to the discharge ports 212, and a first air supply opening 541 is disposed on a side of the air supply pipe 54 away from the discharge ports 212, and is used for supplying air between the composite material precursors discharged from the two adjacent discharge ports 212.

Further, the air supply pipe 54 is provided with one or more second air supply openings 542 at an angle of 10 ° to 90 ° with respect to the advancing direction of the composite material precursor discharged from the discharge port 212, on the side away from the discharge port 212, for supplying air toward the composite material precursor.

Further, the continuous production line of the fiber reinforced foamed composite material further comprises a hot air recovery cover arranged between the foaming device and the forming die and used for recovering hot air discharged from the outlet section of the foaming device, an air inlet pipe 53 communicated with the hot air recovery cover and a fan 52 used for enabling one end of the air inlet pipe 53 close to the forming die 4 to generate negative pressure, the other end of the air inlet pipe 53 is communicated with the air supply device 5, and air in the forming die 4 enters the air supply device 5 after being recovered by the air inlet pipe 53 and is finally discharged by the air supply pipe 54.

Further, a film covering assembly 7 is arranged between the foaming device 3 and the forming die 4 and is used for attaching a strip-shaped film 72 on the surface of the composite material precursor and allowing the composite material precursor to enter the forming die (4) along with the composite material precursor; and/or, attaching the fabric on the surface of the composite material precursor, and entering the forming mold (4) along with the composite material precursor; the effect of doing so is that the film with one or the combination of a plurality of decoration function, weather-proof function, wear-resistant function, flame retardant function and demoulding function can be conveniently compounded on the surface of the composite material, thereby meeting the working requirement; meanwhile, a plurality of film covering assemblies can be used for compounding a plurality of films or a plurality of films on the surface of the composite material; further, the fabric can be compounded on the surface of the composite material by using a film covering component alone or between the composite material precursor and the film, so that the function of the composite material is supplemented or the strength perpendicular to the existing direction, namely the transverse strength of the composite material is reinforced.

Further, the film covering assembly 7 includes one or more rotatably disposed roller bodies 71, and the roller bodies 71 are wound with a belt-shaped film or fabric or are disposed with a rolled belt-shaped film or fabric.

The utility model also provides a continuous production method of fibre reinforcement foaming combined material, with above-mentioned arbitrary be used for fibre reinforcement foaming combined material's continuous production line to make to including following step:

s1, the fiber materials are distributed and positioned by the distribution frame 1 according to the design and then enter the infiltration channel 21 of the glue injection box 2;

s2, enabling the liquid matrix material to enter the glue injection box 2 through the glue injection channel 22, enabling the fiber material to pass through the soaking channel 21 and be simultaneously impregnated by the liquid matrix material to form a composite material precursor, and enabling the composite material precursor to enter the foaming device 3, a gap between the forming die 4 and the glue injection box 2 or a pre-foaming section arranged on the forming die 4 through the discharge hole 212;

s3, pre-foaming the composite material precursor in the gap or pre-foaming section between the foaming device 3, the forming die 4 and the glue injection box 2, expanding the liquid matrix material, and entering the forming die section arranged on the forming die 4 or the forming die 4 when or before foaming stops;

s4, fully foaming and curing or shaping the composite material in the forming die 4 or the forming die section;

s5, pulling the molded composite material out of the molding die 4 through the traction device 8, and continuously feeding the fiber material coming from the distribution frame 1 on one side of the feed inlet 211 of the glue injection box 2 into the glue injection box 2 in the process.

Further, the S5 further includes: the belt-shaped film 72 or the fiber fabric is compounded on the surface of the composite material precursor, and enters the forming mold 4 along with the composite material precursor. Furthermore, at least 2 soaking channels 21 in the glue injection box 2 are provided, and the glue injection channels 22 are respectively communicated with the corresponding soaking channels 21; in S2, different types of liquid matrix materials are injected into different wetting channels 21 through different injection channels 22.

Further, in S3, the composite material precursor is heated in the foaming device 3 to accelerate the foaming process of the composite material, wherein the heating manner includes one or more of hot air blowing, microwave heating, electromagnetic heating, and infrared heating.

Further, in S3, one or more of the first blowing port 541 and the second blowing port 542 provided in the blowing pipe 54 are used to blow hot air to accelerate the foaming process of the composite material.

Further, in S2, liquid matrix materials of different materials or different formulations enter different wetting channels in the glue injection box 2 through the glue injection channel 22.

The utility model also discloses a fibre reinforced foamed composite, composite is through the aforesaid arbitrary be used for fibre reinforced foamed composite's continuous production line to make, or through the aforesaid arbitrary method production manufacturing, include the composite that is formed by fibrous material and liquid matrix material. Further, the fiber material comprises one or more of inorganic fibers, organic polymer fibers, metal fibers and natural fibers, and the inorganic fibers comprise one or more of glass fibers, basalt fibers and carbon fibers; the organic polymer fiber comprises one or more of polyester fiber, Kevlar fiber, ultra-high molecular weight polyethylene fiber, polyamide fiber, polyvinyl alcohol fiber, polyvinyl chloride fiber and polypropylene cyanide fiber; the metal fiber comprises one or more of steel fiber, aluminum fiber and copper fiber; the natural fiber comprises one or more of flax fiber, ramie fiber, sisal fiber, jute fiber, bamboo fiber and cotton fiber.

Further, the liquid matrix comprises one or two or more of organic polymer resin and inorganic gelled material, or one or two or more of inorganic gelled material and metal material; wherein the inorganic cementitious material comprises one or a combination of more of cement, magnesia, gypsum; the metal material comprises one or more of aluminum and alloy thereof, magnesium and alloy thereof; the organic polymer resin comprises thermosetting resin and thermoplastic resin; the thermosetting resin comprises one or more of polyurethane resin, epoxy resin, phenolic resin, unsaturated polyester resin, vinyl resin and cyanate resin.

Further, the weight ratio of the liquid matrix in the composite material is 15-65%.

Further, the liquid matrix also contains a lubricant or an internal mold release agent.

Further, the composite material also comprises a fiber fabric, wherein the fiber fabric comprises one or more of fiber cloth, chopped strand mat, continuous mat, knitting mat, stitch-bonding mat and needle-punched mat.

Furthermore, the surface of the composite material also comprises a film layer or a fiber fabric layer with decorative function or protective function.

Further, the outer layer of the composite material is made of a fiber material and a weather-resistant resin, wherein the weather-resistant resin comprises one or more of aliphatic polyurethane resin, acrylic resin and fluorocarbon resin.

The utility model also provides an as aforesaid arbitrary fibre reinforcement foaming combined material's application is applied to railway sleeper, floor, gallery road plate, house and maintains structure, highway crash barrier, door and window curtain frame section bar, boats and ships deck, maintenance board, pontoon bridge board.

The utility model also provides a foaming device for the preparation of fibre reinforcing foaming combined material, foaming device 3 is equipped with the foaming chamber that link up in succession, and its one end is the feed end, and the other end is the discharge end, and combined material gets into the foaming intracavity of foaming device 3 through the feed end, and accomplish the prefoaming in the foaming device 3, 3 length L of foaming device is not less than s t, and wherein s does combined material advances speed, t does combined material is in begin the foaming inflation to the time of stopping the inflation in the foaming device 3.

Through the technical scheme, the fan supplies a plurality of air supply pipes through the main pipe, the air supply structure of the air supply pipes is simplified, the implementation is convenient, air can be supplied to the multi-layer composite material precursor respectively, the heating efficiency is improved, the foaming is accelerated, and the production efficiency is also improved.

By adopting the technical scheme of arranging the first air supply outlet, the air supply pipe is arranged between the two adjacent discharge channels and supplies air through the first air supply outlet, and airflow blown out by the first air supply outlet forms hot airflow between the two adjacent layered composite material precursors, so that the layered composite material precursors are foamed quickly, and the problems of too slow foaming and low production efficiency caused by too thick single-layer composite material precursors and too slow heat transfer are solved.

By adopting the technical scheme of arranging the second air supply outlet, the two oppositely arranged second air supply outlets supply air along the vertical direction or towards the composite material precursor, on one hand, the composite material precursor pulled out from the discharge port is supported and separated through hot air flow, the phenomenon that the composite material precursor is bonded prematurely after the composite material precursor is discharged from the discharge port and the heating efficiency is influenced is avoided, on the other hand, the hot air flow is in direct contact with the composite material precursor, the heating efficiency is improved, when all fibers contained in the composite material precursor are in a yarn bundle shape, the hot air flow can even penetrate through the composite material precursor to be heated more fully, so that the foaming reaction of the liquid matrix material can be promoted, the time required by pre-foaming is shortened, and the production efficiency.

Through adopting the technical scheme of above-mentioned second supply-air outlet, can also prevent that the liquid matrix material in the combined material precursor material that pulls out from the discharge gate from hanging and piling up at the discharge gate, finally blocks up the discharge gate.

By adopting the technical scheme, hot air blown out from the air supply pipe in the foaming device can be extracted and conveyed to the air supply pipe through the axial flow fan by the air supply pipe arranged on the hot air collecting fan cover at the inlet of the forming die, so that the utilization rate of heat generated by the foaming device is improved, and the production energy consumption of equipment is reduced.

By adopting the technical scheme, the film with one or a combination of more of decoration function, weather resistance function, wear resistance function, flame retardant function and demolding function can be conveniently compounded on the surface of the composite material, so that the working requirement of the composite material is met; meanwhile, a plurality of film covering assemblies can be used for compounding a plurality of films or a plurality of films on the surface of the composite material; further, the fabric can be compounded on the surface of the composite material by using a film covering component alone or between the composite material precursor and the film, so that the function of the composite material is supplemented or the strength perpendicular to the fiber direction, namely the transverse strength of the composite material is reinforced.

By adopting the technical scheme, the continuous production of the composite material is realized.

In the present invention, the material obtained by mixing the fiber material and the liquid matrix material is collectively referred to as a composite material, and for convenience, in the actual industry, the composite material before completely curing or setting is conventionally referred to as a "composite material precursor", and the product after completing curing or setting is referred to as a "composite material".

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below.

FIG. 1 is a schematic diagram of the overall structure of a continuous production line for fiber reinforced foamed composite materials;

FIG. 2 is a schematic structural view of a distribution frame;

FIG. 3 is a schematic structural view of the glue injection box;

FIG. 4 is a schematic view of the internal structure of the glue injection box;

fig. 5 is a schematic view of an internal structure of the glue injection box, which is mainly used for showing the structure of the glue injection channel;

FIG. 6 is a partial enlarged view of the glue injection box A, which is mainly used for showing the cross-sectional structure of the glue injection hole;

FIG. 7 is a partially enlarged view of the glue injection box B, which is mainly used for showing the sectional structure of the blast pipe;

FIG. 8 is a flow chart of the production of the composite material.

In the figure: 1. a distribution frame; 11. a frame body; 12. a distribution plate; 13. a distribution hole; 2. injecting a glue box; 21. infiltrating a channel; 211. A feed inlet; 212. a discharge port; 22. a glue injection channel; 221. a vertical channel; 222. a diversion trench; 3. a foaming device; 4. forming a mould; 5. an air supply device; 51. a main pipe; 52. a fan; 53. an air inlet pipe; 54. an air supply pipe; 541. a first air supply outlet; 542. a second air supply outlet; 6. a heating device; 7. a film covering assembly; 71. a roller body; 72. a band-shaped film; 8. a traction device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In order to realize the purpose of the present invention, the following technical solution can be adopted, as shown in fig. 1, a continuous production line of fiber reinforced foamed composite material, comprising:

the distribution frame 1 is used for enabling the fiber materials passing through the distribution frame 1 to enter the glue injection box in a distribution state.

The glue injection box 2 comprises a soaking channel 21 for fiber material impregnation and a glue injection channel 22 for liquid matrix material to enter the soaking channel 21, wherein the soaking channel 21 comprises a feed inlet 211 for fiber material to enter and a discharge outlet 212 for composite material formed by liquid matrix material impregnation of the fiber material to pass through, and the area of the feed inlet 211 is larger than or equal to that of the discharge outlet 212. The infiltration channel (21) is a continuous channel, and the area of the feed port (211) is larger than that of the discharge port (212); or the infiltration channel (21) is a continuous channel, and the cross section of the infiltration channel is gradually reduced or reduced in a step shape from the feed port (211) to the discharge port (212); or the cross section of the part of the infiltration channel close to one side of the discharge hole is gradually reduced. Generally, the cross section of each infiltration channel is linearly or nonlinearly reduced from the feed port end to the discharge port end, the cross section of the infiltration channel can be generally set to be rectangular (or other shapes such as circular, W-shaped or the cross section shape close to the final product if necessary), and the change of the cross section can be the change of the height dimension of the rectangle, the change of the width dimension of the rectangle, or the change of both the height and the width direction; the method has the technical effects that in the process that the fiber materials advance in the infiltration channel and are infiltrated into the composite material precursor by the liquid matrix materials, the liquid matrix materials can rapidly infiltrate into the fiber materials and extrude bubbles among the fibers along with the smaller and smaller cross section area and the higher and higher internal pressure in the composite material precursor, so that the rapid and sufficient infiltration effect is achieved; meanwhile, when the cross section of the infiltration channel is linearly reduced, the fiber material can be distributed by the distribution frame in a manner of clinging to the inner wall of the infiltration channel, so that the liquid matrix material attached to the inner wall of the infiltration channel can be continuously taken away while the fiber passes through, the liquid matrix material is prevented from being deposited on the inner wall of the infiltration channel, and the infiltration channel is blocked more and more to cause production halt or quality problems, which is particularly necessary for fast-curing liquid matrix materials such as polyurethane resin.

The foaming device 3 is provided with a continuously through foaming cavity; one end of the foaming device 3 is correspondingly arranged or connected with the discharge hole 212 of the glue injection box 2, the other end of the foaming device 3 is correspondingly arranged or connected with the forming die 4, the composite material enters the foaming device 3 through the discharge hole 212 and is pre-foamed in the foaming device 3, the length L of the foaming device 3 is not more than s t, wherein s is the advancing speed of the composite material, and t is the time from the beginning of foaming and expansion to the stopping of expansion of the composite material in the foaming device 3; l essentially refers to the length of the foaming chamber.

And the forming die 4 is used for curing or shaping the composite material after the composite material passes through the foaming device 3 and enters the forming die 4.

By adopting the technical scheme, the fiber materials are distributed and arranged in space through the distribution frame 1 according to the distribution of the distribution holes to form the required spatial distribution shape and spatial distribution position, then the fiber materials enter the infiltration channel 21, the liquid matrix materials are injected into the infiltration channel through the glue injection channel 22, the liquid matrix materials infiltrate the fiber materials, the fiber materials are mixed with the liquid matrix materials to form a composite material precursor, the composite material precursor passes through the infiltration channel 21 and then enters the foaming device 3 for pre-foaming, and then the composite material precursor enters the forming die 4 for complete foaming and curing or shaping, so as to form the final composite material product. The area of the feed port 211 of the infiltration channel 21 is larger than or equal to the area of the discharge port 212, so that the internal pressure of the liquid matrix material in the infiltration channel 21 is increased, the liquid matrix material quickly and sufficiently infiltrates the fiber material, and the fiber material in the finally-formed composite material is ensured to be distributed and sufficiently stretched according to the design intention, so that the reinforcing effect of the fiber material is exerted to the maximum, and the composite material after being shaped or solidified is continuously drawn by the drawing device 8, so that the continuous production of the composite material is realized. The utility model discloses creative messenger's fibrous material distributes the back as required before being soaked, gets into the injection box and fully soaks the mixture with liquid matrix material and be the combined material precursor, then reentrant foaming device carries out incomplete foaming reaction, and reaction time is T, and this T is greater than zero, but equals to be less than the combined material precursor and is in just accomplish the foaming in the foaming device 3, stop expanded time T. Generally, it is necessary to set the value of L so that the time of the composite material precursor in the foaming device 3 is less than the value of T, so that the composite material precursor enters the forming mold in an incompletely foamed state, and the final foaming expansion is continued to complete the shaping and curing. In a specific example, when the time T is equal to T, the composite material precursor enters the forming mold after the expansion is completed, and the final forming quality is adversely affected because the composite material precursor does not continue to expand, and the effect is not as good as T < T, so T < T is preferably set. In specific implementation, the distribution frame 1 may be arranged according to the following scheme, as shown in fig. 2, the distribution frame 1 includes a frame body 11 and a distribution plate 12 disposed on the frame body 11, a plurality of distribution holes 13 for fiber materials to penetrate through are uniformly disposed on the distribution plate 12, or the distribution holes 13 may be non-uniformly disposed, the distribution form of the distribution holes 13 determines the spatial distribution state of each fiber material after passing through all or part of the distribution holes 13, and thus determines the distribution condition of the final fiber material in the composite material. Meanwhile, the fiber materials continuously enter the glue injection box 2 at a controllable traction speed through the traction device 8, so that the whole production line realizes continuous production.

As shown in fig. 3, the glue injection box 2 includes a box body, the box body is provided with a plurality of infiltration channels 21 for fiber materials to enter, a plurality of glue injection channels 22 for liquid matrix materials to enter, and a plurality of discharge channels 23 for controlling the thickness of the composite material, in the embodiment shown in fig. 4, the infiltration channels 21 are uniformly distributed from top to bottom in a layered structure, the discharge channels 23 and the infiltration channels 21 are arranged in one-to-one correspondence, the glue injection channels 22 are arranged between the feed inlet 211 and the discharge outlet 212 and penetrate through all the infiltration channels 21, the liquid matrix materials enter all the infiltration channels 21 in the glue injection box 2 through the glue injection channels 22, and the fiber materials are distributed by the distribution plate 12 in a layered manner and then respectively enter different infiltration channels 21; in an example shown in fig. 5, the cross section of the glue injection channel 22 in the vertical direction is in a necking arrangement, the cross section of the glue injection channel 22 in the present embodiment is in an oval structure, or in a circular structure, the fiber material is infiltrated in the infiltration channel 21 with the liquid matrix material that is continuously injected according to the amount required for infiltrating the fiber material and drives the liquid matrix material to move, the glue injection channel 22 in the necking arrangement can retain the excess liquid matrix material in the glue injection channel 22, so that the consumption of the liquid matrix material is reduced, and the fiber material is ensured to be continuously infiltrated.

The fiber material and the liquid matrix material passing through the crossing position of the infiltration channel 21 and the glue injection channel 22 preliminarily form a composite material precursor, the composite material precursor enters the part behind the crossing position of the infiltration channel 21 and the glue injection channel 22, and is finally pulled out by the traction device 8 through the discharge hole 212, and the thickness of the composite material precursor is limited by the height of the discharge hole 212.

In some embodiments, a portion of the channel after the intersection of the infiltration channel 21 and the glue injection channel 22 and near the side of the discharge opening 212 may be defined as a discharge channel, the discharge channel is disposed in a necking shape (the cross section of the discharge channel gradually decreases) toward the side of the discharge opening 212, and the gradually decreasing discharge channel increases the internal pressure of the liquid matrix material, so as to accelerate the infiltration of the liquid matrix material into the fiber material and simultaneously achieve a predetermined thickness of the composite material. Of course, the structural design in which the height dimension of the outlet 212 is smaller than the inlet 211 increases the internal pressure of the liquid matrix material, accelerates the impregnation of the fiber material by the liquid matrix material, and makes the thickness of the composite material a predetermined thickness

With reference to the examples shown in fig. 1 and 4, the foaming device 3 has a tunnel structure, one end of the tunnel structure is communicated with the glue injection box 2, the other end of the tunnel structure is communicated with the forming die 4, the foaming device 3 is communicated with all the discharge ports 212, the layered composite material precursor is separated from the discharge ports 212 and enters the foaming device 3, and the layered composite material precursor is in a form of a sheet with one end separated from each other in the foaming device 3; in order to accelerate the foaming of the composite material precursor, the glue injection box 2 is further provided with an air supply device 5, the air supply device 5 comprises a fan 52 and a main pipe 51 connected with the fan 52, the main pipe 51 is provided with a plurality of air supply pipes 54, the air supply pipes 54 are arranged between two adjacent discharge holes 212 and are arranged close to one side of the glue injection box 2, as shown in a combined figure 6, the air supply pipes 54 are horizontally provided with first air supply openings 541 opened towards one side of the foaming device 3, airflow blown out from the first air supply openings 541 forms hot airflow between two adjacent layered composite materials for separating the composite material precursors and preventing the composite material precursors from being bonded and affected uniformly and heated prematurely, the air supply pipes 54 are further provided with two second air supply openings 542 along the vertical direction, the two oppositely arranged second air supply openings 542 supply air along the vertical direction, on one hand, the composite material precursors pulled out from the discharge holes are supported and separated through the hot airflow, the thermal efficiency is prevented from being affected by premature bonding after the fibers exit from the discharge port, and on the other hand, the hot air flow is in direct contact with the composite material precursor, so that the heating efficiency is improved; in addition, the technical scheme of the second air supply outlet can also prevent the liquid matrix material in the composite material precursor pulled out from the discharge outlet from being hung and accumulated on the discharge outlet and finally blocking the discharge outlet, and finally, the first air supply outlet 541 and the second air supply outlet 542 are arranged on one side of the glue injection box for blowing hot air with relatively high temperature to the composite material precursor just coming out from the glue injection box 2 so as to accelerate the foaming of the composite material precursor; the time required by pre-foaming is reduced, and the production efficiency is improved.

In the example shown in fig. 1, the forming mold 4 is provided with a heating device 6, and the heating device 6 includes a heating plate provided on the forming mold 4, which keeps the temperature in the forming mold 4 within a certain range to complete sufficient foaming and curing or setting of the composite material precursor. Finally, the fully foamed and cured or shaped composite material is continuously drawn out by the drawing device 8 and can be cut into required products according to required length by a subsequent cutting device.

In some embodiments, the distribution frame includes a distribution plate, the distribution plate is provided with distribution holes penetrating through the distribution plate for passing the fiber material, the distribution holes are in a hole shape or a slit shape, and the fiber material is distributed in space through all or part of the distribution holes simultaneously.

Preferably, the wetting channel is a continuous channel, and the area of the feeding hole 211 is larger than that of the discharging hole 212. By adopting the technical scheme, the internal pressure of the liquid matrix material is increased, and the infiltration is ensured to be full. In specific implementation, the soaking channel 21 may be a continuous channel, and the cross section of the soaking channel is linearly and gradually reduced or reduced in a stepped manner from the feeding hole 211 to the discharging hole 212; or the cross section of the part of the infiltration channel close to one side of the discharge hole is gradually reduced. As long as the moving composite material precursor is subjected to the internal pressure provided by the infiltration channel 21 in the infiltration channel 21, the gradually reduced internal space can gradually increase the internal pressure, so that the infiltration effect and efficiency of the liquid matrix material on the fiber material are higher, the sufficient infiltration is ensured, and the product quality is improved.

The height of the discharge hole is less than or equal to 20 mm. The device is used for controlling the thickness of the composite material coming out of the single infiltration channel, ensuring that the composite material is easy to heat and uniformly heated, and ensuring the efficiency of subsequent foaming.

In a preferred embodiment, the inner wall of the infiltration passage 21 is further provided with a guide groove 221, and the guide groove 221 is annularly arranged along the cross section of the inner wall of the infiltration passage 21. The glue injection channel 22 is a vertical channel 222, the vertical channel 222 is arranged between the feed port 211 and the discharge port 212 and penetrates through the infiltration channel 21, and the guide groove 221 is communicated with the vertical channel 222. The infiltration channel 21 is located at the diversion trench 221, and due to the existence of the diversion trench 221, the volume of the infiltration channel is increased, and the infiltration channel can become a pressure buffer area for stabilizing glue injection pressure, uniformly distributing liquid matrix materials, and further improving infiltration efficiency and effect.

In a preferred embodiment, at least 2 wetting channels 21 are provided in the glue injection box 2, and all the wetting channels 21 are communicated with the glue injection channel 22; or the number of the glue injection channels 22 is the same as that of the infiltration channels, and the glue injection channels are respectively communicated with the corresponding infiltration channels 21. Like this when processing the combined material of big thickness, if single infiltration passageway 21, combined material can lead to when too thick infiltration efficiency step-down, leads to the efficiency and the quality of foaming to all be more difficult to control because heat transfer is slow, the utility model discloses creative accomplish infiltration complex work with fibrous material and liquid matrix material respectively in a plurality of stratiform superimposed infiltration passageways 21, single infiltration passageway 21 highly can be controlled at appropriate numerical value for soak and the efficiency and the effect that are heated reach the result that needs, then make multilayer combined material get into foaming, design and solidification formation a holistic combined material in same foaming device and the shaping mould together through subsequent handling. Because the fiber materials are infiltrated by adopting 2, 3 or more infiltration channels in a layered mode, in addition to the advantages, liquid matrix materials of different materials or different formulas can enter different infiltration channels in the glue injection box 2 through the glue injection channel 22, so that a composite material with more complex materials can be constructed, products meeting different performance requirements can be obtained, and the goal cannot be achieved by a single infiltration channel in the prior art.

In practical application, the foaming device 3 further comprises a heating device 6 for foaming the liquid matrix material, and the heating device 6 comprises one or more combinations of a hot air circulation device, a microwave heating device, an electromagnetic heating device and an infrared heating device.

In practical application, an air supply device 5 is arranged on one side of the glue injection box 2 close to the foaming device 3, the air supply device 5 comprises a fan 52 and an air supply pipe 54 communicated with the fan 52, and the air supply pipe 54 supplies air into the foaming device 3.

In practical application, when the number of the infiltration channels 21 in the glue injection box 2 is two or more, the air supply pipe 54 is disposed between two adjacent discharge ports 212, the air supply pipe 54 is disposed on a side close to the discharge ports 212, and a first air supply opening 541 is disposed on a side of the air supply pipe 54 away from the discharge ports 212, and is used for supplying air between the composite materials discharged from the two adjacent discharge ports 212.

In practical applications, the air supply pipe 54 is provided with one or more second air supply openings 542 at an angle of 10 to 90 degrees with respect to the advancing direction of the composite material from the discharge port 212, and the second air supply openings are used for supplying air towards the composite material.

In some embodiments, the continuous production line of the fiber reinforced foamed composite material is further provided with a waste heat recovery device, which comprises a hot air recovery cover arranged between the foaming device and the forming die for recovering hot air discharged from the outlet section of the foaming device, an air inlet pipe 53 communicated with the hot air recovery cover, and a fan 52 for generating negative pressure at one end of the air inlet pipe 53 close to the forming die 4, wherein the other end of the air inlet pipe 53 is communicated with the air supply device 5, and air in the foaming section 3 enters the air supply device 5 after being recovered by the air inlet pipe 53 and is finally discharged by the air supply pipe 54. In practical application, the following settings can be set: in order to improve the full utilization of the heat in the foaming section 3, the forming die 4 is connected with an air inlet pipe 53, the fan 52 is an axial flow fan 52 arranged on the air inlet pipe 53, the axial flow fan 52 sends the hot air in the forming die 4 to the foaming device 3, so that the high-temperature air discharged by the air inlet pipe 54 can accelerate the foaming reaction of the composite material in the foaming device 3, and the production efficiency of the composite material is further improved. Through adopting above-mentioned technical scheme, the fan supplies with many blast pipes through being responsible for, has simplified the air feed structure of blast pipe, is convenient for implement.

In some embodiments, in order to reduce the production efficiency of the composite material with surface coating, a coating assembly 7 is arranged between the foaming device 3 and the forming die 4, and is used for attaching the strip-shaped film 72 on the surface of the composite material and entering the forming die 4 along with the composite material; and/or, attaching the fabric on the surface of the composite material and entering the forming die 4 along with the composite material. In practical applications, the film covering assembly 7 includes one or more rotatably disposed roller bodies 71, and the roller bodies 71 are wound with a belt-shaped film or fabric. For example, the film covering assembly includes a roller 71 rotatably disposed, a belt-shaped film 72 is wound on the roller 71, the belt-shaped film 72 is attached to the surface of the composite material as the composite material enters the forming mold 4, and is attached to the surface of the composite material as the composite material is cured, where the belt-shaped film 72 may be a decorative fabric or a weatherproof fabric with a UV protection function, or a fiber felt or a cloth to increase the transverse strength of the composite material, or a release cloth to facilitate the release of the composite material from the forming mold 4. The effect of doing so is that the film with one or the combination of a plurality of decoration function, weather-proof function, wear-resistant function, flame retardant function and demoulding function can be conveniently compounded on the surface of the composite material, thereby meeting the working requirement; meanwhile, a plurality of film covering assemblies can be used for compounding a plurality of films or a plurality of films on the surface of the composite material; further, the fabric can be compounded on the surface of the composite material by using a film covering component alone or between the composite material precursor and the film, so that the function of the composite material is supplemented or the strength perpendicular to the existing direction, namely the transverse strength of the composite material is reinforced.

The fiber material is one or more of organic fiber, inorganic nonmetal fiber, plant fiber and metal fiber, preferably one or more of polymer fiber, plant fiber, glass fiber, carbon fiber and basalt fiber, and more preferably one or more of polymer fiber and glass fiber; the liquid matrix material is polymer, metal and nonmetal, preferably thermosetting resin or thermoplastic resin or aluminum alloy or magnesium alloy or glass or cement or gypsum, more preferably one or more of polyurethane, phenolic resin, fluorocarbon resin, acrylic resin and silicon resin.

The composite material traction device is characterized in that the composite material traction device 8 is further arranged in the scheme, the composite material traction device 8 comprises a driving roller for clamping the composite material, the composite material is moved through rotation of the driving roller, and the fiber in the composite material is continuous, so that the fiber material can be pulled to move on a continuous production line through traction of the composite material. By adopting the technical scheme, the continuous production of the composite material is realized.

The utility model also provides a continuous production method of the fiber reinforced foam composite material.

As shown in fig. 7, the continuous production line for the fiber reinforced foamed composite material according to any one of the above-mentioned embodiments comprises the following steps:

s5, pulling the molded composite material out of the molding die 4 by the traction device 8, and continuously feeding the fiber material coming from the side of the feed inlet 211 of the glue injection box 2 through the distribution frame) into the glue injection box 2 in the process.

In some embodiments, the S5 further includes: the belt-shaped film 72 or the fiber fabric is compounded on the surface of the composite material precursor, is adhered to the composite material and enters the forming mold 4 along with the composite material precursor.

In some embodiments, there are at least 2 infiltration channels 21 in the glue injection box 2, and the glue injection channels 22 are respectively communicated with the corresponding infiltration channels 21; in S2, different types of liquid matrix materials are injected into different wetting channels 21 through different injection channels 22.

In some embodiments, in S3, the composite material is heated in the foaming device 3 to accelerate the foaming process of the composite material, the heating manner includes one of hot air blowing, microwave heating, electromagnetic heating, infrared heating, or different fibers enter different soaking channels (21) through different feed inlets to form different composite material precursors, preferably, weather-resistant aliphatic polyurethane or fluorocarbon resin or acrylic resin is injected into the outer soaking channel, and reinforced aromatic polyurethane or epoxy comfort or vinyl resin or unsaturated resin is injected into the inner soaking channel.

In some embodiments, in S3, one or more of the first blowing opening 541 and the second blowing opening 542 provided in the blowing pipe 54 are used to blow hot air to accelerate the foaming process of the composite material.

In some embodiments, in S2, liquid matrix materials of different materials or different formulations are introduced into different wetting channels in the glue injection box 2 through the glue injection channel 22. The advantages of which have been described above.

Wherein S5 also includes: and the strip-shaped film wound on the roller body is attached to the composite material and enters the forming die along with the composite material.

In S2, different types of liquid substrates are injected into different wetting channels through different injection channels.

Wherein in S3, the residence time of the composite material in the foaming device is longer than the time for the fiber material to expand to a volume not less than the cavity volume of the forming die because the liquid matrix material starts to foam.

Wherein in S2, the foaming device has a length such that the time for the fibers to pass through the foaming device is longer than the time for the liquid matrix to start foaming but shorter than the time for the liquid matrix to finish foaming.

The utility model also provides a fibre reinforced foamed composite, the composite is produced through above-mentioned arbitrary method, include the composite who is formed by fibrous material and liquid base member.

The utility model also discloses a fibre reinforced foamed composite, composite is through the aforesaid arbitrary be used for fibre reinforced foamed composite's continuous production line to make, or through the aforesaid arbitrary method production manufacturing, include the composite that is formed by fibrous material and liquid base member.

In practical application, the fiber material comprises one or more of inorganic fibers, organic polymer fibers, metal fibers and natural fibers, and the inorganic fibers comprise one or more of glass fibers, basalt fibers and carbon fibers; the organic polymer fiber comprises one or more of polyester fiber, Kevlar fiber, ultra-high molecular weight polyethylene fiber, polyamide fiber, polyvinyl alcohol fiber, polyvinyl chloride fiber and polypropylene cyanide fiber; the metal fiber comprises one or more of steel fiber, aluminum fiber and copper fiber; the natural fiber comprises one or more of flax fiber, ramie fiber, sisal fiber, jute fiber, bamboo fiber and cotton fiber.

In practical application, the liquid matrix comprises one or two or more of organic polymer resin and inorganic gelled material, or one or two or more of inorganic gelled material and metal material; wherein the inorganic cementitious material comprises one or a combination of more of cement, magnesia, gypsum; the metal material comprises one or more of aluminum and alloy thereof, magnesium and alloy thereof; the organic polymer resin comprises thermosetting resin and thermoplastic resin; the thermosetting resin comprises one or more of polyurethane resin, epoxy resin, phenolic resin, unsaturated polyester resin, vinyl resin and cyanate resin.

In practical application, the weight ratio of the liquid matrix in the composite material is 15-65%.

In practice, the liquid matrix also contains a lubricant or an internal mold release agent.

In practical application, the composite material also comprises a fiber fabric, wherein the fiber fabric comprises one or more of fiber cloth, chopped strand mat, continuous mat, knitting mat, stitch-bonding mat and needle-punched mat.

In practical application, the surface of the composite material also comprises a film layer or a fiber fabric layer with decorative function or protective function.

In practical application, the outer layer of the composite material is made of a fiber material and a weather-resistant resin, wherein the weather-resistant resin comprises one or more of aliphatic polyurethane resin, acrylic resin and fluorocarbon resin.

The selection of the above materials and the selection of the mixture ratio are discussed in the prior art, and are not described again.

To sum up, the utility model discloses can obtain following effect:

1. the distribution frame can distribute, fully infiltrate and fully straighten the fiber materials in the composite material according to the design intention, thereby improving the reinforcing effect of the fiber materials;

2. the glue injection box can quickly soak a large amount of fiber materials at one time, so that the glue injection box can be used for producing extremely thick composite materials;

3. the foaming device can uniformly heat the composite material precursor and quickly foam, so that the production efficiency of the foaming composite material can be improved;

4. the forming die can be used for preparing a product with a complex shape at one time through a special die cavity, and the thickness and the shape of the prepared composite material are not limited as long as the conditions of the forming die permit;

5. the local strength of the composite material can be adjusted by adjusting the distribution of the fiber material, and the production and the manufacture of the special composite material are realized.

The utility model also provides a foaming device for the preparation of fibre reinforcing foaming combined material, foaming device 3 is equipped with the foaming chamber that link up in succession, and its one end is the feed end, and the other end is the discharge end, and combined material gets into the foaming intracavity of foaming device 3 through the feed end, and accomplish the prefoaming in the foaming device 3, 3 length L of foaming device is not less than s t, and wherein s does combined material advances speed, t does combined material is in begin the foaming inflation to the time of stopping the inflation in the foaming device 3. The foaming device can be used in production lines for producing other similar materials, the quality of prefoaming can be controlled more conveniently, the production efficiency is improved, the composite material after prefoaming through accurate control enters a forming die to complete final foaming, curing or sizing, and the product quality and efficiency are improved.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A continuous production line of fibre reinforced foamed composite material, comprising:

the distribution frame (1) is used for enabling the fiber materials passing through the distribution frame (1) to enter the glue injection box according to a distribution state;

the glue injection box (2) comprises a soaking channel (21) for fiber material impregnation and a glue injection channel (22) for liquid matrix material to enter the soaking channel (21), wherein the soaking channel (21) comprises a feed inlet (211) for fiber material to enter and a discharge outlet (212) for composite material precursor formed by liquid matrix material impregnation of the fiber material to pass through, and the area of the feed inlet (211) is larger than or equal to that of the discharge outlet (212);

the foaming device (3) is provided with a continuous through foaming cavity; one end of the foaming device (3) is correspondingly arranged or connected with a discharge hole (212) of the glue injection box (2), the other end of the foaming device is correspondingly arranged or connected with a forming die (4), a composite material precursor enters the foaming device (3) through the discharge hole (212) and completes pre-foaming in the foaming device (3), the length L of the foaming device (3) is less than or equal to s t, wherein s is the advancing speed of the composite material precursor, and t is the time from the beginning of foaming and expansion to the stopping of expansion of the composite material precursor in the foaming device (3);

the forming die (4) is used for allowing the composite material precursor to enter the forming die (4) for curing or shaping after passing through the foaming device (3) to form a final composite material;

and the composite material is solidified or shaped in the forming die (4) and then is pulled out of the forming die (4) by the traction device (8).

2. The continuous production line of the fiber reinforced foamed composite material according to claim 1, wherein the distribution frame (1) comprises a distribution plate (12), the distribution plate (12) is provided with distribution holes (13) which penetrate through the distribution plate (12) and are used for fiber materials to pass through, the distribution holes (13) are in a hole shape or a slit shape, and the fiber materials are distributed in space through all or part of the distribution holes (13) simultaneously.

3. The continuous production line of fiber reinforced foamed composite material according to claim 1, wherein the infiltration channel (21) is a continuous channel and the area of the feed opening (211) is larger than the area of the discharge opening (212); or the infiltration channel (21) is a continuous channel, and the cross section of the infiltration channel is gradually reduced or reduced in a step shape from the feed port (211) to the discharge port (212); or the cross section of the part of the infiltration channel close to one side of the discharge hole is gradually reduced.

4. The continuous production line of fiber reinforced foamed composite material according to claim 3, characterized in that the height of the discharge outlet (212) is less than or equal to 20 mm.

5. The continuous production line of fiber reinforced foamed composite material according to claim 1, wherein the inner wall of the infiltration channel (21) is further provided with guide grooves (221), and the guide grooves (221) are annularly arranged along the cross section of the inner wall of the infiltration channel (21).

6. The continuous production line of the fiber reinforced foamed composite material according to claim 5, wherein the glue injection channel (22) is a vertical channel (222), the vertical channel (222) is disposed between the feed inlet (211) and the discharge outlet (212) and penetrates through the infiltration channel (21), and the guide grooves (221) are communicated with the vertical channel (222).

7. The continuous production line of fiber reinforced foamed composite materials according to claim 6, characterized in that the number of the infiltration channels (21) in the glue injection box (2) is at least 2, and all the infiltration channels (21) are communicated with the glue injection channel (22); or the glue injection channels (22) are respectively communicated with the corresponding soaking channels (21).

8. The continuous production line of fiber reinforced foamed composite material according to claim 1, wherein the foaming device (3) further comprises a heating device (6) for foaming the liquid matrix material, and the heating device (6) comprises one or more of a hot air circulation device, a microwave heating device, an electromagnetic heating device and an infrared heating device.

9. The continuous production line of the fiber reinforced foamed composite material according to any one of claims 1 to 8, wherein an air supply device (5) is arranged on one side of the glue injection box (2) close to the foaming device (3), the air supply device (5) comprises a fan (52) and an air supply pipe (54) communicated with the fan (52), and the air supply pipe (54) supplies air into the foaming device (3); and/or the air supply pipe (54) supplies air to the composite material precursor from the discharge port.

10. The continuous production line of the fiber reinforced foamed composite material according to claim 9, wherein when the infiltration channels (21) in the glue injection box (2) are two or more, the air supply pipe (54) is disposed between two adjacent discharge ports (212), the air supply pipe (54) is disposed at a side close to the discharge ports (212), and the air supply pipe (54) is opened with a first air supply opening (541) at a side far away from the discharge ports (212) for supplying air between the composite material precursors discharged from the two adjacent discharge ports (212).

11. The continuous production line of fiber reinforced foamed composite material according to claim 10, wherein the air supply duct (54) is provided with one or more second air supply ports (542) for supplying air toward the composite material precursor, the second air supply ports being formed at an angle of 10 ° to 90 ° with respect to the advancing direction of the composite material precursor from the discharge outlet (212) on the side away from the discharge outlet (212).

12. The continuous production line of the fiber reinforced foam composite material according to claim 9, wherein the continuous production line of the fiber reinforced foam composite material is further provided with a waste heat recovery device, which comprises a hot air recovery hood disposed between the foaming device and the forming die for recovering hot air discharged from the outlet section of the foaming device, an air inlet pipe (53) communicated with the hot air recovery hood, and a fan (52) for generating negative pressure at one end of the air inlet pipe (53) close to the forming die (4), the other end of the air inlet pipe (53) is communicated with the air supply device (5), and air in the foaming device (3) is recovered through the air inlet pipe (53), enters the air supply device (5), and is finally discharged through the air supply pipe (54).

13. The continuous production line of fiber reinforced foamed composite material according to claim 1, wherein a film covering assembly (7) is provided between the foaming device (3) and the forming mold (4) for attaching a belt-like film (72) on the surface of the composite material precursor to enter the forming mold (4) with the composite material precursor; and/or, attaching the fabric on the surface of the composite material precursor and entering the forming mold (4) along with the composite material precursor.

14. The continuous production line of fiber reinforced foamed composite material according to claim 13, wherein the film covering assembly (7) comprises one or more rotatably disposed roller bodies (71), and the roller bodies (71) are wound with a band-shaped film or fabric or are provided with a roll of the band-shaped film or fabric.

15. A fiber reinforced foamed composite, characterized in that the composite is manufactured by a continuous production line of the fiber reinforced foamed composite according to any one of claims 1 to 14.

16. The foaming device is used for preparing a fiber reinforced foaming composite material and is characterized by comprising a foaming device (3), wherein the foaming device (3) is provided with a continuously-communicated foaming cavity, one end of the foaming cavity is a feeding end, the other end of the foaming cavity is a discharging end, a composite material precursor enters the foaming cavity of the foaming device (3) through the feeding end and completes pre-foaming in the foaming device (3), the length L of the foaming device (3) is not more than s t, s is the advancing speed of the composite material, and t is the time from foaming expansion to expansion stop of the composite material in the foaming device (3).

17. Foaming device according to claim 16, wherein the foaming device (3) further comprises a heating device (6) for foaming the liquid matrix material, wherein the heating device (6) comprises one or more of a combination of a hot air circulation device, a microwave heating device, an electromagnetic heating device and an infrared heating device.