CN211334660U

CN211334660U - Continuous production line for glue injection box and fiber reinforced foam composite material

Info

Publication number: CN211334660U
Application number: CN201920743641.4U
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: 2020-08-25
Anticipated expiration: 2029-05-22

Abstract

A glue injection box and a continuous production line of fiber reinforced foaming composite materials comprise a distribution frame, the 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 fiber material enters the foaming device through the discharge channel for pre-foaming and then enters the forming die for complete foaming, curing or shaping, and different fibers and/or liquid matrix materials can be infiltrated in different infiltration channels to form different composite material precursors, so that different parts of the manufactured composite material have different material components, different functions and different performances.

Description

Continuous production line for glue injection box and fiber reinforced foam composite material

Technical Field

The utility model relates to a combined material pultrusion technical field, concretely relates to injecting glue box and a fiber reinforcement foaming combined material's 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 process similar to the free foaming of the continuous plate in the method 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 on the fibers, the fibers are difficult to infiltrate quickly, so that the interface strength between the matrix material and the fiber material is influenced, and the performance of the composite material is influenced finally; 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 injecting glue box and a fiber reinforcement foaming combined material's continuous production line distributes fibrous material in advance through the distribution frame, then fibrous material loops through the injecting glue box, foaming device and forming die, the injecting glue box makes liquid matrix material soak fibrous material rapidly and fully, foaming device makes liquid matrix material foam in advance then accomplish abundant foaming in getting into forming die again, guarantee that the fibrous 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:

as shown in fig. 3 to 7, a glue injection box for a liquid matrix material to infiltrate a fiber material to form a composite material precursor includes 2 or more than 2 infiltration channels 21 for infiltration of the fiber material and a glue injection channel 22 for the liquid matrix material to enter the infiltration channels 21, the infiltration channels 21 include a feed inlet 211 for entry of the fiber material and a discharge outlet 212 for passage of the composite material precursor formed by infiltration of the liquid matrix material, and the area of the feed inlet 211 is greater than or equal to the area of the discharge outlet 212. The glue injection box is provided with a plurality of infiltration channels, the cross section of each infiltration channel can be greatly reduced compared with the cross section of a single channel in the prior art, the infiltration effect and efficiency of the fiber materials are improved, the area of the feed port 211 is larger than or equal to that of the discharge port 212, the pressure of the liquid matrix materials in the infiltration channels is further improved, and the infiltration effect and efficiency of the fiber materials are further improved. In addition, the two or more soaking channels can conveniently inject different liquid matrix materials into different soaking channels according to requirements, and/or different fiber materials are introduced into different soaking channels, so that different parts of the produced composite material have different functions.

Further, the wetting channel 21 is a continuous channel and the area of the feed inlet 211 is larger than that of the discharge outlet 212; 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. 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.

Further, the height of the discharge hole 212 is less than or equal to 20 mm. The device is used for controlling the thickness of the composite material from a single infiltration channel, ensuring that the precursor of the composite material is easy to heat and uniformly heated, and ensuring the efficiency of subsequent foaming; this is particularly important where the liquid matrix material is a poor conductor such as polyurethane, phenolic resin, etc. because if the composite precursor is too thick, it will require a long heating time, which may affect production efficiency or increase the cost of the production apparatus.

Furthermore, the inner wall of the infiltration channel 21 is also provided with a flow guide groove 221, the flow guide groove 221 is annularly arranged along the cross section of the inner wall of the infiltration channel 21, and the flow guide groove 221 is communicated with the glue injection channel 22; the technical effect is that the diversion trench can be used for rapidly distributing injected liquid base material in the circumferential direction of the infiltration channel, so that the liquid base material can infiltrate the fibers entering the infiltration channel as much as possible at the same time, and simultaneously, air clamped between the fibers is discharged, thereby preventing the defects of air inclusion or air inclusion phenomenon, such as gaps and the like of the composite material.

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

Further, the number of the glue injection channels 22 is at least one, and all the soaking channels 21 are communicated with all the glue injection channels 22; or, there are at least two glue injection channels 22, and each soaking channel 21 is communicated with one, two or more glue injection channels 22; or, the number of the glue injection channels 22 is equal to or greater than the number of the infiltration channels 21, and each glue injection channel 22 is correspondingly communicated with only one infiltration channel 21; or one or more of the infiltration channels are not communicated with other infiltration channels, but are only communicated with one or more of the glue injection channels, and the technical effect of the method enables a flexibly designed fiber infiltration method to be provided.

The utility model also provides a continuous production line of fibre reinforcement foaming combined material, include:

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 is provided with a soaking channel 21 for fiber material impregnation and a glue injection channel 22 for liquid matrix material to enter the soaking channel 21, 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;

one end of the forming die 4 is a feeding end and is correspondingly arranged or connected with the discharge port, and the other end of the forming die 4 is a discharge end and is correspondingly arranged with the traction device and used for curing or shaping the composite material precursor entering the forming die 4;

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, and then enters a foaming device for pre-foaming, then the mixture enters a forming die to be completely foamed, cured or shaped, 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 1 is including the distribution plate 12, set up the distribution hole 13 that is used for the fiber material to pass through that runs through distribution plate 12 on the distribution plate 12, distribution hole 13 is poroid or strip seam form, and fiber material accomplishes fiber material distribution on the space through whole or partial distribution hole 13 simultaneously.

Through the above-mentioned technical scheme who adopts the distribution frame, the operator can adjust the distribution of fiber material in combined material through the distribution hole position that adjustment fiber material wore to establish, guarantees that the fiber material internal distribution in the combined material does not 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.

Further, the glue injection box 2 is in the structure of any one of the glue injection boxes.

Further, the continuous production line of the fiber reinforced foamed composite material further comprises a foaming device 3, wherein 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 port 212 of the glue injection box 2, the other end of the foaming device is correspondingly arranged or connected with the forming die 4, the 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 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 composite material precursor enters the foaming device to perform incomplete foaming reaction, the reaction time is T, and the T is more than zero but less than the time T when the composite material precursor just completes foaming in the foaming device 3 and stops expanding. 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 one specific example, when the time T is equal to T, the composite material precursor enters the forming die after the expansion is completed, and the final forming quality is adversely affected because the composite material precursor does not continue to foam and expand any more, and the effect is not as good as T < T.

Furthermore, the forming mold 4 is provided with a continuous through cavity which is divided into a pre-foaming section and a forming mold section, the part close to one side of the glue injection box is the pre-foaming section, the part close to one side of the traction device is the forming mold section, and the composite material precursor enters the pre-foaming section from the glue injection box for pre-foaming and then enters the forming mold section for curing or shaping.

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 close to a discharge port of the glue injection box 2, and the air supply device 5 supplies air to the composite material precursor discharged from the discharge port.

Further, the air supply device 5 includes a fan 52 and an air supply pipe 54 communicated with the fan 52, and the air supply pipe 54 is provided with one or more second air supply ports 542 at an angle of 10 ° to 90 ° with respect to the advancing direction of the composite material coming out from the discharge port 212, and supplies air toward the composite material precursor.

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.

Furthermore, the continuous production line of the fiber reinforced foamed composite material is also provided with a waste heat recovery device, which 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 to be 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 device 5.

Further, a film covering 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 precursor and allowing the composite material precursor to enter the forming die 4; 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 aforementioned arbitrary continuous production line of fibre reinforcement foaming combined material makes 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 infiltration channels 21 through different injection channels 22, or different fibers enter different infiltration channels 21 through different feed inlets, so as to form different composite material precursors.

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.

The utility model also provides 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.

The utility model also provides an above-mentioned or the application of the fibre reinforcement foaming combined material of above-mentioned device production, be applied to railway sleeper, floor, plank road board, house maintenance structure, highway anticollision barrier, door and window curtain frame section bar, boats and ships deck, maintenance board, pontoon bridge board.

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.

By adopting 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, meanwhile, air can be respectively supplied to the precursor of the multilayer composite material, 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 yarn bundles, 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 is improved; finally, 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.

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 inlet 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.

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 a composite material;

FIG. 9 is a front view of one example of a glue injection cartridge;

FIG. 10 is a top view of one example of a glue injection cartridge;

FIG. 11 is a left side view of one example of a glue injection cartridge;

FIG. 12 is a right side view of one example of a glue injection cartridge;

FIG. 13 is a cross-sectional view B-B of an exemplary compound injection cartridge;

FIG. 14 is a cross-sectional view A-A of an exemplary compound injection cartridge;

fig. 15 is a partially enlarged view in a cross-sectional view a-a of an example of the glue injection cartridge.

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 achieve the purpose of the utility model, the following technical proposal can be adopted,

as shown in fig. 3 to 7, a glue injection box for a liquid matrix material to infiltrate a fiber material to form a composite material precursor includes 2 or more than 2 infiltration channels 21 for infiltration of the fiber material and a glue injection channel 22 for the liquid matrix material to enter the infiltration channels 21, the infiltration channels 21 include a feed inlet 211 for entry of the fiber material and a discharge outlet 212 for passage of the composite material precursor formed by infiltration of the liquid matrix material, and the area of the feed inlet 211 is greater than or equal to the area of the discharge outlet 212. The glue injection box is provided with a plurality of infiltration channels, the cross section of each infiltration channel can be greatly reduced compared with the cross section of a single channel in the prior art, the infiltration effect and efficiency of the fiber materials are improved, the area of the feed port 211 is larger than or equal to that of the discharge port 212, the pressure of the liquid matrix materials in the infiltration channels is further improved, and the infiltration effect and efficiency of the fiber materials are further improved. In addition, the two or more soaking channels can conveniently inject different liquid matrix materials into different soaking channels according to requirements, and/or introduce different fiber materials into different soaking channels, so that more complex composite materials with different functions can be produced.

In practical application, the wetting 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 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. Generally, the cross section of each wetting channel decreases linearly or nonlinearly from the end of the inlet 211 to the end of the outlet 212, preferably linearly, more preferably with a taper of 0.2 ° to 5 °, and most preferably with a taper of 0.2 ° to 2 °; the cross-section of the infiltration channel 21 may be generally rectangular (or have other shapes if necessary), and the change of the cross-section may be a change of the height dimension of the rectangle, a change of the width dimension of the rectangle, or a change of both the height and width directions.

By adopting the technical scheme, the gradually reduced cross-sectional area of the infiltration channel 21 increases the internal pressure of the liquid matrix in the infiltration channel 21, so that the infiltration efficiency is improved, and the infiltration is ensured to be sufficient.

In a preferred embodiment, the height of the discharge hole 212 is less than or equal to 20mm, preferably less than or equal to 10mm, and more preferably less than or equal to 5 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 some preferred schemes, the inner wall of the infiltration channel 21 is further provided with a flow guide groove 221, the flow guide groove 221 is circumferentially arranged along the cross section of the inner wall of the infiltration channel 21, and preferably, the flow guide groove 221 is arranged in a closed ring on the cross section of the inner wall of the infiltration channel 21; the diversion trench 221 is communicated with the glue injection channel 22. When the liquid matrix material enters the infiltration channel 21 from the glue injection channel 22, the cross section corresponding to the diversion trench 221 can be quickly distributed along the diversion trench 221, so that the liquid matrix material can annularly wrap the fiber material in the infiltration channel 21, the fiber material is almost simultaneously impregnated, and the infiltration efficiency and quality are improved.

In some embodiments, the glue injection channel 22 is a vertical channel 222, the vertical channel 222 is disposed between the inlet 211 and the outlet 212 and is communicated with the infiltration channels 21, and preferably, the vertical channel 222 is communicated with the flow guide grooves 221 of all the infiltration channels 21, so that the injected liquid matrix material can be rapidly distributed in each infiltration channel.

In some embodiments, the number of the glue injection channels 22 is at least one, and all the soaking channels 21 are communicated with all the glue injection channels 22, so that the liquid matrix material can be more rapidly distributed in each soaking channel by using a plurality of glue injection channels; in this case, the glue injection cartridge is generally used to simultaneously inject the same liquid matrix material into all the infiltration channels 21.

Alternatively, in other embodiments, there are at least two glue injection channels 22, and each infiltration channel 21 is communicated with one, two or more glue injection channels 22; the glue injection channels are two or more, when all the glue injection channels can be communicated with all the infiltration channels, the injection flow of the liquid matrix material can be increased and the speed of the liquid matrix material entering different infiltration channels can be accelerated by arranging the two or more glue injection channels at different positions on a ring line where the same cross section of the glue injection box is located (or arranging the two or more glue injection channels at other positions of the glue injection box according to requirements).

Or, the number of the glue injection channels 22 is equal to or greater than the number of the infiltration channels 21, and each glue injection channel 22 is correspondingly communicated with only one infiltration channel 21; or one or more of the soaking channels are not communicated with other soaking channels, but are only communicated with one or more of the glue injection channels. Equivalently, the soaking channels are grouped, the same liquid matrix material can be injected into all the soaking channels, and different liquid matrix materials can be injected into different soaking channels through different glue injection channels, so that more requirements on products are met.

Fig. 9-15 are schematic views of another embodiment of the glue cartridge, fig. 9 being a front view of the glue cartridge (rear view is identical thereto and is not shown); fig. 10 is a top view of the glue-injection box (the bottom view corresponds thereto, not shown); FIG. 11 is a left side view of the glue injection cartridge; FIG. 12 is a right side view of the glue cartridge; FIG. 13 is a cross-sectional view B-B of the glue cartridge; FIG. 14 is a cross-sectional view A-A of the glue cartridge; fig. 15 is a partially enlarged view in a sectional view a-a of the glue cartridge. In this example, the number of the infiltration channels is reduced to 5, which are respectively one 21A upper layer infiltration channel, 3 21B middle layer infiltration channels, and 1 21C lower layer infiltration channel, mainly for more clearly explaining the structure and the working principle of the glue injection box, and the following technical solutions are also applicable to the other embodiments described above. That is, in the specific implementation, we can initially group the infiltration channels 21 arranged from top to bottom into upper infiltration channels 21A (the upper infiltration channels in fig. 9-15 have only one infiltration channel, but there can be a plurality of infiltration channels, for example, 1-2 or more infiltration channels at the top in the glue injection box in fig. 3-7 are used as upper infiltration channels, which are communicated with one or more glue injection channels, which are equivalent to that the upper infiltration channels are communicated with each other, and the same liquid matrix material can be injected), middle infiltration channels 21B (the middle infiltration channels in fig. 9-15 are composed of 3 infiltration channels, but there can be more, for example, the middle infiltration channels in the glue injection box in fig. 3-7 are used as middle infiltration channels, which are communicated with one or more glue injection channels, which are equivalent to that the middle infiltration channels are communicated with each other, the same liquid matrix material can be injected), a lower layer infiltration channel 21C (the lower layer infiltration channel in fig. 9-15 has only one infiltration channel, but may also be multiple, for example, 1-2 or more infiltration channels at the bottom in the glue injection box in fig. 3-7 are taken as the lower layer infiltration channel, they are communicated with one or more glue injection channels, which is equivalent to that the lower layer infiltration channels are communicated with each other, the same liquid matrix material can be injected), the upper layer infiltration channel 21A, the middle layer infiltration channel 21B and the lower layer infiltration channel 21C may not be communicated with each other, liquid base materials of different materials can be injected into the infiltration channels of different layer groups, and different fiber materials are introduced into the infiltration channels of different layer groups (even into each infiltration channel), so that more complex products can be produced, and products with different required characteristics can be obtained. In fig. 9-15, the glue injection channels 221B are horizontally disposed in two positions in front and in back (the front view and the back view define the front, back, left, right, up, down, and the like) of the 3 infiltration channels of the middle layer infiltration channel, and after the glue injection channels 221B enter the glue injection box as shown in fig. 13-15, the 3 infiltration channels of the middle layer infiltration channel 21B and the flow guide grooves 222B of the 3 infiltration channels are all communicated through a vertical shunt pipeline 2210, so that the liquid matrix material can be simultaneously injected into the 3 infiltration channels of the middle layer infiltration channel 21B and the flow guide grooves 222B of the 3 infiltration channels through the front and back glue injection channels 221B. In fig. 13 and 14, the glue injection channel 221A provided at the upper portion communicates with the upper wetting channel 21A and the guiding groove 222A thereof, and the liquid matrix material is injected thereto; the glue injection channel 221C arranged at the lower part is communicated with the lower wetting channel 21C and the diversion trench 222C thereof, and liquid matrix material is injected into the lower wetting channel. In this example, the upper layer infiltration channel 21A, the middle layer infiltration channel 21B, and the lower layer infiltration channel 21C may be filled with the same liquid matrix material, or may be filled with different liquid matrix materials. After the shunt line 2210 is looped around the glue injection box, the upper layer infiltration channel 21A, the middle layer infiltration channel 21B, the lower layer infiltration channel 21C and the corresponding diversion trenches thereof can be all communicated, so that a liquid matrix material can be injected at the same time. Or different liquid matrix materials are injected at different times, so that the liquid matrix materials have different materials and characteristics in the longitudinal section of the composite material. Utilize the utility model discloses an injection molding box, the fibrous material that production that can be convenient has the same or different layer structure and multiple material and the combined material that the difference was arranged.

the distribution frame 1 is used for enabling the fiber materials passing through the distribution frame 1 to enter the glue injection box (the structure and the working principle thereof are as described above) according to the distribution state;

the glue injection box 2 (the structure and the working principle thereof are as described above) is provided with a soaking channel 21 for fiber material impregnation and a glue injection channel 22 for liquid matrix material to enter the soaking channel 21, the soaking channel 21 comprises a feed port 211 for fiber material to enter and a discharge port 212 for composite material precursor formed by liquid matrix material impregnation of the fiber material to pass through, and the area of the feed port 211 is larger than or equal to that of the discharge port 212;

By adopting the technical scheme, the fiber materials are distributed and arranged in the space through the distribution frame to form the required fiber density, the fiber materials enter the infiltration channel, the liquid matrix materials are injected into the infiltration channel through the glue injection channel, the liquid base material soaks the fiber material, the fiber material mixed with the liquid base material passes through the soaking channel and then enters a gap between the glue injection box and the forming die, or the pre-foaming is carried out in the additionally arranged foaming device, then the mixture enters the forming die for complete foaming, curing or shaping, the area of the feed inlet of the infiltration channel is larger than or equal to the area of the 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 uniformly distributed and fully extended.

In some embodiments, the distribution frame 1 includes a distribution plate 12, the distribution plate 12 is provided with distribution holes 13 for passing through the distribution plate 12, the distribution holes 13 are in a hole shape or a slit shape, the fiber material completes the distribution of the fiber material in space through all or part of the distribution holes 13 at the same time, preferably, the fiber material in a fabric shape is distributed through the slit-shaped distribution holes 13, and the fiber material in a yarn bundle is distributed through the hole-shaped distribution holes 13; more preferably, a portion of the fibrous material is distributed against the inner wall of the infiltration channel 21. The spatial arrangement mode of the distribution holes determines the arrangement position of the fiber material in the composite material, so that the distribution condition of the fiber material in the composite material can be conveniently controlled through the design of the distribution holes.

Through the technical scheme of adopting the distribution frame, 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 design of the distribution of the fiber material in the composite material is realized. When the distributing holes are in a hole shape, the fiber yarn material is suitable to be penetrated through, when the distributing 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 can be further adjusted, and the structure and the performance index of the composite material can be 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.

In some embodiments, the continuous production line of fiber reinforced foamed composite material further comprises a foaming device 3, wherein 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 the discharge port 212 of the glue injection box 2, the other end of the foaming device is correspondingly arranged or connected with the forming die 4, the 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 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 precursor in the foaming device 3.

Or, the forming mold 4 is provided with a continuous through cavity which is divided into a pre-foaming section and a forming mold section, the part close to one side of the glue injection box is the pre-foaming section, the part close to one side of the traction device is the forming mold section, and the composite material precursor enters the pre-foaming section from the glue injection box for pre-foaming and then enters the forming mold section for curing or shaping.

In some embodiments, the foaming device 3 further comprises a heating device 6 for foaming the liquid matrix material, 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, and preferably, the heating device 6 further comprises a hot air collecting device arranged at the inlet of the forming die 4. So as to heat and recycle the composite material precursor in the foaming device.

In some embodiments, an air supply device 5 is disposed near a side of the discharge port of the glue injection box 2, and the air supply device 5 supplies air to the composite material precursor discharged from the discharge port.

In some embodiments, the air supply device 5 includes a fan 52 and an air supply pipe 54 communicated with the fan 52, the air supply pipe 54 opens 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 coming out of the discharge port 212 towards the side away from the discharge port 212, preferably opens one or more second air supply openings 542 at an angle of 60 ° to 90 °, and more preferably opens two upper and lower second air supply openings 542 for supplying air 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, so that the composite material precursor is prevented from being bonded prematurely after being discharged out of the discharge port and affecting the heating efficiency, and on the other hand, the hot air flow is in direct contact with the composite material precursor to improve the heating efficiency; finally, the second air supply opening 542 can prevent the liquid matrix material in the composite material precursor drawn out from the discharge opening from being hung and accumulated on the discharge opening and finally blocking the discharge opening.

In some embodiments, 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 opened on a side of the air supply pipe 54 away from the discharge ports 212, for supplying air between the composite material precursors discharged from the two adjacent discharge ports 212; the airflow blown out by the first air supply opening 541 forms hot airflow between 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, the fan can supply a plurality of air supply pipes through the main pipe, the air supply structure of the air supply pipes is simplified, and the implementation is convenient.

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 heat efficiency generated by the foaming device is improved.

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 device 5. This saves energy consumption.

In some embodiments, a film covering assembly 7 is disposed between the foaming device 3 and the forming mold 4, and is used for attaching the strip-shaped film 72 on the surface of the composite material precursor to enter the forming mold 4 along with the composite material precursor; and/or, attaching a fabric to the surface of the composite material precursor as the composite material precursor enters the forming mold 4. The required surface layer structure can be compounded on the surface of the final composite material product, and the effect of the method is that the film with one or a combination of more of decoration function, weather resistance function, wear resistance function, flame resistance function and demoulding function can be conveniently compounded on the surface of the composite material to meet 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.

In some embodiments, the film covering assembly 7 includes one or more rotatably disposed roller bodies 71, and the roller bodies 71 are wound with or disposed with a band-shaped film or fabric.

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 fiber density and distribution pattern, 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 material mixed liquid matrix materials pass through the infiltration channel 21 and then enter the foaming device 3 for pre-foaming, and then enter the forming die 4 for complete foaming and curing or shaping, the area of the feed inlet 211 of the infiltration channel 21 is larger than or equal to that of the discharge outlet 212, so that the internal pressure of the liquid matrix materials in the infiltration channel 21 is increased, the fiber materials are quickly and fully infiltrated, the fiber materials in the finally-formed composite material are distributed and fully stretched according to the design intention, and the reinforcing effect of the fiber materials is exerted to the maximum extent, the composite material after being continuously drawn and shaped or solidified by the drawing device 8 realizes the continuous production of the composite material. 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 combined material 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 in the foaming device 3 is less than the value of T, so that the composite material 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 enters the forming die after the expansion is completed, and the final forming quality is adversely affected because the composite material does not continue to foam and expand any more, 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 along the vertical direction is in a necking arrangement, the cross section of the glue injection channel 22 in the present scheme is in an elliptical structure or a circular structure, and the fiber material is infiltrated in the infiltration channel 21 with the liquid matrix material which is continuously injected according to the amount required for infiltrating the fiber material and drives the liquid matrix material to move, so as to ensure that the fiber material is continuously infiltrated.

The fiber material passing through the crossing position of the infiltration channel 21 and the glue injection channel 22 is infiltrated by the liquid matrix material to form a composite material precursor, and then is pulled out through the discharge hole 212 under the traction action of the traction device 8, 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.

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.

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 diversion trench 221 is communicated with the vertical channel 222. The infiltration channel 21 has a larger volume at the diversion trench 221, and can be a pressure buffer area for stabilizing the glue injection pressure and uniformly distributing the liquid matrix material.

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 the infiltration efficiency step-down when too thick, leads to the efficiency and the quality of foaming to 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 infiltration closes efficiency and the effect that is heated and reaches the result that needs, then makes 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 an air inlet pipe 53 with one end communicated with the forming die 4 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 section 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. 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.

As shown in fig. 7, the present invention further provides a continuous production method of fiber reinforced foamed composite material, which is manufactured by using any one of the continuous production lines for fiber reinforced foamed composite material, and comprises the following steps:

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, 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 infiltration channels 21 through different glue injection channels 22, or different fibers enter different infiltration 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 layer infiltration channel, and reinforced aromatic polyurethane or epoxy comfort or vinyl resin or unsaturated resin is injected into the inner layer infiltration 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.

The utility model also provides an application of fibre reinforcement foaming combined material, be applied to railway sleeper, floor, plank road board, house and maintain structure, highway anticollision barrier, door and window curtain frame section bar, boats and ships deck, maintenance board, pontoon bridge board.

In some embodiments, the fibrous material comprises a combination of one or more of inorganic fibers, organic polymer fibers, metal fibers, natural fibers, the inorganic fibers comprising a combination of one or more of glass fibers, basalt fibers, 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 some embodiments, the liquid matrix comprises one, two or more combinations of organic polymer resins, inorganic gelling materials, or one, two or more combinations of inorganic gelling materials, metallic materials; 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 some embodiments, the weight ratio of the liquid matrix in the composite material is 15% to 65%.

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

In some embodiments, the composite further comprises a fiber fabric comprising one or a combination of more of a fiber cloth, a chopped strand mat, a continuous mat, a knit mat, a stitch-bonded mat, and a needle-punched mat.

In some embodiments, the surface of the composite material further comprises a film layer or a fiber fabric layer with decorative or protective functions.

In some embodiments, the outer layer of the composite is made of a fibrous material and a weatherable resin comprising a combination of one or more of aliphatic polyurethane resins, acrylic resins, fluorocarbon resins.

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

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 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.

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 design of multiple channels can enable different parts of the prepared composite material to have different functions and meet different requirements.

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. The glue injection box is used for enabling a liquid matrix material to infiltrate a fiber material to form a composite material precursor, and is characterized by comprising 2 or more than 2 infiltration channels (21) for infiltrating the fiber material and a glue injection channel (22) for enabling the liquid matrix material to enter the infiltration channels (21), wherein each infiltration channel (21) comprises a feed inlet (211) for enabling the fiber material to enter and a discharge outlet (212) for enabling the liquid matrix material to infiltrate the composite material precursor formed by 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).

2. The glue injection box 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.

3. The glue injection box of claim 2, wherein the height of the discharge hole (212) is less than or equal to 20 mm.

4. The glue injection box according to claim 2, wherein a guide groove (221) is further formed in the inner wall of the infiltration channel (21), the guide groove (221) is circumferentially arranged along the cross section of the inner wall of the infiltration channel (21), and the guide groove (221) is communicated with the glue injection channel (22).

5. The glue injection box of claim 4, wherein the glue injection channel (22) is a vertical channel (222), and the vertical channel (222) is arranged between the feed port (211) and the discharge port (212) and is communicated with the wetting channel (21).

6. The glue injection box according to claim 4, characterized in that the glue injection channel (22) is at least one, and all the infiltration channels (21) are communicated with all the glue injection channels (22); or the number of the glue injection channels (22) is at least two, and each soaking channel (21) is communicated with one, two or more glue injection channels (22); or the number of the glue injection channels (22) is equal to that of the infiltration channels (21), and each glue injection channel (22) is only correspondingly communicated with one infiltration channel (21); or one or more of the soaking channels are not communicated with other soaking channels, but are only communicated with one or more of the glue injection channels.

7. 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) is provided with a soaking channel (21) for fiber material impregnation and a glue injection channel (22) for liquid matrix material to enter the soaking channel (21), 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 the liquid matrix material soaking 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);

one end of the forming die (4) is a feeding end and is correspondingly arranged or connected with the discharge hole, and the other end of the forming die is a discharge end and is correspondingly arranged with the traction device and used for curing or shaping the composite material precursor entering the forming die (4);

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).

8. The continuous production line of the fiber reinforced foamed composite material according to claim 7, 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.

9. Continuous production line of fibre-reinforced foamed composite materials according to claim 7, characterized in that the injection box (2) is according to any one of claims 1 to 6.

10. The continuous production line of fiber-reinforced foamed composite materials according to any one of claims 7 to 9, characterized in that the continuous production line of fiber-reinforced foamed composite materials further comprises a foaming device (3), wherein 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 the forming die (4), the 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).

11. The continuous production line of fiber reinforced foamed composite material according to any one of claims 7 to 9, wherein the forming mold (4) is provided with a continuous through cavity which is divided into a pre-foaming section and a forming mold section, the part close to the glue injection box is the pre-foaming section, the part close to the traction device is the forming mold section, and the composite material precursor enters the pre-foaming section from the glue injection box for pre-foaming and then enters the forming mold section for curing or shaping.

12. The continuous production line of fiber reinforced foamed composite material according to claim 10, 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 combination of a hot air circulation device, a microwave heating device, an electromagnetic heating device and an infrared heating device.

13. The continuous production line of fiber reinforced foamed composite material according to claim 9, wherein an air supply device (5) is arranged near one side of the outlet of the glue injection box (2), and the air supply device (5) supplies air to the composite material precursor from the outlet.

14. The continuous production line of the fiber reinforced foamed composite material according to claim 13, wherein 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) is provided with one or more second air supply ports (542) at an angle of 10-90 degrees with respect to the advancing direction of the composite material from the discharge port (212) towards the side away from the discharge port (212) for supplying air towards the composite material precursor.

15. The continuous production line of the fiber reinforced foamed composite material according to claim 14, wherein when the infiltration passage (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 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).

16. The continuous production line of fiber reinforced foam composite material according to claim 14, wherein the continuous production line of 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 the 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 the hot air at one end of the foaming device (3) close to the forming die (4) is recovered by the air inlet pipe (53), enters the air supply device (5), and is finally discharged by the air supply device (5).

17. The continuous production line of fiber reinforced foamed composite material according to claim 10, 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) to 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.

18. The continuous production line of fiber-reinforced foamed composite material according to claim 17, characterized in that the film covering assembly (7) comprises one or more rotatably arranged roller bodies (71), on which roller bodies (71) a band-shaped film or fabric is wound or on which a roll of the band-shaped film or fabric is arranged.