A pultruded material production system, production method and glass fiber reinforced plastic pultruded strip

Abstract

The present invention discloses a pultruded material production system, a production method and a fiberglass pultruded strip, wherein the pultruded material production system includes: a yarn supply system, a dipping system, a curing system and a traction mechanism. The dipping system includes a first dipping zone, a second dipping zone and a pultruding zone, and a resin leaching plate is arranged between the first dipping zone and the second dipping zone; the first dipping zone is used for the fiber to be impregnated with resin once, the resin leaching plate is used to scrape off part of the resin that the fiber has been impregnated with once, and the second dipping zone is used for the fiber to be impregnated with resin twice; the fiber passes through the pultruding zone and is extruded into a fiber-resin material of a predetermined shape. In the pultruded material production system of the present application, fewer bubbles are generated by the secondary impregnation of the fiber with resin, which reduces the bubble content in the fiberglass obtained by pultrusion, and the fiberglass has high strength.

Description

Technical Field

[0001] The invention relates to the technical field of pultrusion technology, and in particular to a pultrusion material production system, a production method and a glass fiber reinforced plastic pultrusion strip. Background Art

[0002] FRP pultruded profiles have good insulation performance, corrosion resistance, light weight, tensile strength, impact resistance, sound insulation, heat insulation and other characteristics, and are widely used in chemical corrosion protection, sewage treatment, electrical insulation, energy mining, transportation, electronic communications and other fields. FRP pultruded profiles are produced by a continuous production method of composite materials. The untwisted glass fiber roving and other continuous reinforcement material felts, polyester surface felts, etc. on the creel are impregnated with resin, and then passed through a molding mold that maintains a certain cross-sectional shape, and are continuously ejected from the mold after being cured in the mold.

[0003] However, bubbles are generated during the impregnation of glass fiber yarn with resin, resulting in a high bubble content in the FRP obtained by pultrusion, which affects the strength of the FRP. In order to reduce the bubbles in the FRP obtained by pultrusion, the commonly used method is to squeeze out the bubbles in the resin during the overflow or pultrusion process, but this method is difficult to squeeze out the bubbles in the resin inside the FRP. Summary of the invention

[0004] In order to solve the above technical problems, reduce bubbles in FRP and improve the strength of FRP, the present invention provides a pultruded material production system, a production method and a FRP pultruded strip.

[0005] According to one aspect of the present invention, a pultrusion material production system is provided, comprising: a yarn supply system, a dipping system, a curing system and a traction mechanism arranged in sequence along the pultrusion direction; the yarn supply system is used to continuously supply yarn to the production system according to a predetermined rule; the dipping system comprises a first dipping zone, a second dipping zone and a pultrusion zone, and a resin draining plate is arranged between the first dipping zone and the second dipping zone; the first dipping zone and the second dipping zone are filled with resin, the first dipping zone is used for primary impregnation of fibers with resin, the resin draining plate is used to drain away part of the resin that the fibers are once impregnated with in the first dipping zone, and the second dipping zone is used for secondary impregnation of fibers with resin; a plurality of fibers after secondary resin impregnation pass through the pultrusion zone, and the pultrusion zone extrudes several fibers into a fiber-resin material of a predetermined shape; the curing system is used to emit ultraviolet light, the ultraviolet light irradiates the fiber-resin material of a predetermined shape, and the resin in the fiber-resin material is cured to obtain a fiber pultrusion material; the traction mechanism is used to pull the fibers at a predetermined speed for continuous pultrusion in the production system.

[0006] Optionally, along the pultrusion direction, the first impregnation zone includes a first spray unit and a first impregnation unit arranged in sequence, and the second impregnation zone includes a second spray unit and a second impregnation unit arranged in sequence; the first spray unit is provided with a plurality of first nozzles for spraying resin onto the fibers, the first nozzles spray resin onto the fiber surface, and the resin wraps the fibers and penetrates into the fibers; the second spray unit is provided with a plurality of second nozzles for spraying resin onto the fibers, the second nozzles spray resin onto the fiber surface, and the resin wraps the fiber surface.

[0007] Optionally, along the pultrusion direction, the pultrusion zone includes an overflow unit, a preforming unit, a third spray unit and a molding unit; the overflow unit is used to drain excess resin from the surface of the fiber passing through the second impregnation zone; the preforming unit includes a preforming mold, a plurality of fibers pass through the preforming mold and bond together, the preforming mold extrude the plurality of fibers into an initial shape of fiber-resin material and extrude part of the resin; the third spray unit is provided with a plurality of third nozzles, the third nozzles spray resin onto the initial shape of the fiber-resin material so that the resin is wrapped around the surface layer of the initial shape of the fiber-resin material; the molding unit includes a molding mold, the molding mold extrude the initial shape of the fiber-resin material into a predetermined shape to obtain a predetermined shape of the fiber-resin material.

[0008] Optionally, the yarn supply system includes a yarn frame and a tension adjustment mechanism, the yarn frame includes a plurality of yarn grids for placing fiber rolls, the fiber rolls are arranged in the plurality of yarn grids of the yarn frame according to a predetermined rule, and the tension adjustment mechanism is used to adjust the tension of the fiber transported from the yarn frame to the dipping system.

[0009] Optionally, it also includes a heating system arranged between the yarn supply system and the dipping system; the heating system is used to heat the fibers from the yarn supply system and heat the fibers to a first predetermined temperature; the heating system includes a heating mechanism and a heating channel, the heating channel transports a heating medium, and the fibers pass through the heating channel to exchange heat with the heating medium; the heating mechanism is used to heat the heating medium in the heating channel.

[0010] Optionally, it also includes a cooling system arranged between the curing system and the traction mechanism; the cooling system is used to cool the fiber pultrusion material from the curing system, and cool the fiber pultrusion material to a second predetermined temperature; the cooling system includes a cooling mechanism and a cooling channel, the cooling channel transports a cooling medium, and the fiber pultrusion material enters the cooling channel to exchange heat with the cooling medium; the cooling mechanism is used to cool the cooling medium in the cooling channel.

[0011] Optionally, the dipping system includes a dipping tank; the first end wall of the dipping tank is evenly provided with yarn inlet holes; the second end wall of the dipping tank is provided with a pultrusion material outlet; the fiber enters the dipping tank from the first end wall of the dipping tank, and the fiber-resin material of a predetermined shape obtained after primary dipping, secondary dipping and pultrusion molding in the dipping tank passes through the second end wall of the dipping tank.

[0012] Optionally, the production system also includes a constant temperature glue supply system; the constant temperature glue supply includes a glue storage device and a heating unit, the glue storage device is used to supply resin to the glue dipping tank and recover the resin discharged from the glue dipping tank, and the heating unit heats the glue storage device to maintain the resin stored in the glue storage device at a third predetermined temperature; the bottom wall of the glue dipping tank is provided with a glue outlet, and the side walls of the glue dipping tank are provided with glue inlets, the glue storage device is connected to the glue inlet of the glue dipping tank through a glue delivery pipe to supply resin to the glue dipping tank, and the glue outlet of the glue dipping tank is connected to the glue storage device through a glue outlet pipe.

[0013] According to a second aspect of the present invention, a pultrusion material production method is provided, which is performed in the pultrusion material production system of the present application.

[0014] According to a third aspect of the present invention, there is provided a fiberglass pultruded strip produced by the production system or the production method of the present application.

[0015] The present application provides a pultrusion material production system, wherein the impregnation system comprises a first impregnation zone and a second impregnation zone arranged in sequence, wherein the fiber first enters the first impregnation zone for a first impregnation, and then the resin impregnated with the fiber in the first impregnation zone is scraped off, and the fiber enters the second impregnation zone for a second impregnation with the resin and is then pultruded into shape, wherein the second impregnation of the fiber with the resin produces fewer bubbles, thereby reducing the bubble content in the glass fiber reinforced plastic obtained by pultrusion, and the strength of the glass fiber reinforced plastic is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the pultrusion material production system of the present application;

[0018] Figure 2 2 is a schematic structural diagram of a dipping system in an embodiment;

[0019] Figure 3 is a schematic diagram of a yarn supply system in an embodiment;

[0020] Figure 4 is a schematic diagram of a heating system in an embodiment;

[0021] Figure 5 Schematic diagram of a cooling system in an embodiment. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that, in the absence of conflict, the embodiments in this application and the feature vectors in the embodiments can be arbitrarily combined with each other.

[0023] FRP pultruded profiles have good insulation performance, corrosion resistance, light weight, tensile strength, impact resistance, sound insulation, heat insulation and other characteristics, and are widely used in chemical corrosion protection, sewage treatment, electrical insulation, energy mining, transportation, electronic communications and other fields. FRP pultruded profiles are produced by a continuous production method of composite materials. The untwisted glass fiber roving and other continuous reinforcement material felts, polyester surface felts, etc. on the creel are impregnated with resin, and then passed through a molding mold that maintains a certain cross-sectional shape, and are continuously ejected from the mold after being cured in the mold.

[0024] However, bubbles are generated during the impregnation of glass fiber yarn with resin, resulting in a high bubble content in the FRP obtained by pultrusion, which affects the strength of the FRP. In order to reduce the bubbles in the FRP obtained by pultrusion, the commonly used method is to squeeze out the bubbles in the resin during the overflow or pultrusion process, but this method is difficult to squeeze out the bubbles in the resin inside the FRP.

[0025] The present application provides a pultrusion material production system. Along the dipping direction, the dipping system includes a first dipping area 31 and a second dipping area 32 which are arranged in sequence. The first dipping area 31 and the second dipping area 32 are provided with a resin draining plate 34. The fiber enters the first dipping area 31 for dipping. The resin in the first dipping area 31 contacts with the glass fiber to generate a large number of bubbles. The resin draining plate 34 scrapes off part of the resin soaked in the first dipping area 31. The fiber enters the second dipping area 32 for secondary dipping in the resin. When the fiber is soaked in the resin for the second time, the surface of the fiber is wet and the surface of the fiber is covered with resin. When the fiber contacts the resin again in the second dipping area 32, fewer bubbles are generated, thereby reducing the bubble content in the glass fiber reinforced plastic obtained by pultrusion, and the strength of the glass fiber reinforced plastic is high.

[0026] The pultrusion material production system of the present application, such as Figure 1 , 2As shown, it includes: a yarn supply system 1, a dipping system 3, a curing system 4 and a traction mechanism 6 which are arranged in sequence along the pultrusion direction; the yarn supply system 1 is used to continuously supply yarn to the production system according to a predetermined rule; the dipping system 3 includes a first dipping zone 31, a second dipping zone 32 and a pultrusion zone 33, and a resin draining plate 34 is arranged between the first dipping zone 31 and the second dipping zone 32; the first dipping zone 31 and the second dipping zone 32 are filled with resin, the first dipping zone 31 is used for primary impregnation with resin, the resin draining plate 34 is used to drain part of the resin which is once impregnated with the fiber in the first dipping zone 31, and the second dipping zone 32 is used for secondary impregnation with resin; a plurality of fibers after secondary impregnation with resin pass through the pultrusion zone 33, and the pultrusion zone 33 extrude several fibers into a fiber-resin material of a predetermined shape; the curing system 4 emits ultraviolet light, and the ultraviolet light irradiates the extruded fiber-resin material to obtain a fiber pultrusion material with a cured resin; the traction mechanism 6 is used to pull the fiber at a predetermined speed for continuous pultrusion in the production system.

[0027] The fibers are arranged on the yarn supply system 1 according to a predetermined rule, and one end of the fibers passes through the impregnation system 3 and the curing system 4 of the production system and is connected to the traction mechanism 6. The traction mechanism 6 pulls the fibers forward continuously in the production system at a predetermined speed and pultrudes the fibers into fiber pultrusion materials.

[0028] As an example, Figure 2 As shown, along the pultrusion direction, the first impregnation zone 31 includes a first spray unit 311 and a first impregnation unit 312 arranged in sequence, and the second impregnation zone 32 includes a second spray unit 321 and a second impregnation unit 322 arranged in sequence. The first spray unit 311 is provided with a plurality of first nozzles for spraying resin onto the fiber, the first nozzle sprays the resin onto the fiber surface, and the resin wraps the fiber and penetrates into the fiber. The second spray unit 321 is provided with a plurality of second nozzles for spraying resin onto the fiber, the second nozzle sprays the resin onto the fiber surface, and the resin wraps the fiber surface to reduce the bubbles generated when the fiber enters the second impregnation unit 322 and contacts with the resin.

[0029] In the field of glass fiber pultrusion, the conventional method is to impregnate the glass fiber through the resin tank. However, the glass fiber often cannot be fully impregnated with the resin, which easily leads to defects and waste. The commonly used method is to slow down the pultrusion traction speed and lengthen the resin tank to increase the time for the glass fiber to be impregnated with the resin. This method will reduce productivity and increase production costs. In addition, the impregnation effect is unstable, and the glass fiber often has the problem of uneven impregnation.

[0030] The first impregnation zone 31 of the present application is provided with a first spray unit 311 before the first impregnation unit 312. The fiber first enters the first spray unit 311, and the first nozzle sprays resin onto the fiber surface. The resin wraps the fiber surface, so that the fiber surface entering the first impregnation unit 312 is wetted, so as to improve the wettability of the fiber, and the fiber can be fully impregnated with resin in the first impregnation unit 312.

[0031] The fiber enters the second impregnation area 32 from the first impregnation area 31 and passes through the drain plate 34. The drain plate 34 drains away part of the resin impregnated in the first impregnation unit 312. The fiber enters the second impregnation area 32 and first passes through the second spray unit 321. The second spray unit 321 sprays resin on the fiber surface to ensure that the resin surface entering the second impregnation unit 322 is wet. The fiber can be fully impregnated in the second impregnation unit 322. After a layer of resin is wrapped on the fiber surface, fewer bubbles are generated when the fiber is impregnated in the second impregnation unit 322 and contacts with the resin, thereby further reducing the bubbles in the pultruded material obtained by pultrusion.

[0032] As an example, along the pultrusion direction, such as Figure 2 As shown, the pultrusion zone 33 includes an overflow unit 331, a preforming unit 332, a third spray unit 333 and a molding unit 334; the overflow unit 331 is used to drain excess resin from the surface of the fiber passing through the second impregnation zone 322; the preforming unit 332 includes a preforming mold 01, a plurality of fibers pass through the preforming mold 01 and bond together, the preforming mold 01 extrude the plurality of fibers into a fiber-resin material of an initial shape and extrude part of the resin; the third spray unit 333 is provided with a plurality of third nozzles, the third nozzles spray resin onto the fiber-resin material of the initial shape so that the resin is wrapped around the surface layer of the fiber-resin material of the initial shape; the molding unit 334 includes a molding mold 02, the molding mold 02 extrude the fiber-resin material of the initial shape into a predetermined shape to obtain a fiber-resin material of a predetermined shape.

[0033] The fiber enters the overflow unit 331, and the excess resin on the fiber surface drips into the overflow unit 331. The fiber enters the preforming unit 332, and the preforming mold 01 squeezes the fiber to squeeze out the excess resin on the fiber surface and inside the fiber. The third spraying unit 333 sprays resin on the surface of the fiber-resin material extruded into the initial shape, so that the resin is wrapped on the surface of the fiber-resin material in the initial shape, so that the surface of the fiber-resin material in the predetermined shape obtained by pultrusion is resin, and the fiber is prevented from being exposed on the surface of the fiber-resin material.

[0034] The preforming unit 332 includes a plurality of preforming dies 01, and the sizes of the plurality of preforming dies 01 in the preforming unit 332 gradually decrease along the pultrusion direction. The molding unit 334 includes a plurality of molding dies 02, and the sizes of the plurality of molding dies 02 in the molding unit 334 gradually decrease along the pultrusion direction.

[0035] The shape of the cavity of the molding die 02 is the same as that of the cavity of the preforming die 01 and is proportionally reduced relative to the cavity of the preforming die 01 .

[0036] As an example, the curing system 4 includes a UV lamp mold. In the present application, the curing system 4 includes an array of UV lamps emitting ultraviolet light of different wavelengths; the resin used for spraying and impregnating the fiber in the production system of the present application is a UV-curable resin, and the fiber-resin material of a predetermined shape obtained by pultrusion in the pultrusion zone 33 is irradiated by an array of UV lamps of the curing system 4, and the UV-curable resin is rapidly cured under the irradiation of ultraviolet light of different wavelengths, and the fiber-resin material of a predetermined shape is cured to obtain a glass fiber reinforced plastic pultruded strip.

[0037] For example, along the fiber pultrusion direction, the curing system 4 includes a first UV lamp and a second UV lamp arranged in sequence, the first UV lamp is used to emit ultraviolet light with a wavelength of 320-400nm, and the second UV lamp is used to emit ultraviolet light with a wavelength of 220-320nm.

[0038] As an example, Figure 1 , 3 As shown, the yarn supply system 1 includes a yarn frame 10 and a tension adjustment mechanism 12. The yarn frame 10 includes a plurality of yarn grids 11 for placing fiber rolls. The fiber rolls are arranged in the plurality of yarn grids 11 of the yarn frame 10 according to a predetermined rule. The tension adjustment mechanism 12 is used to adjust the tension of the fibers transported from the yarn frame 10 to the dipping system 3.

[0039] Based on the above example, in a preferred embodiment, a reel for winding fibers is placed in each yarn grid 11 of the yarn supply system 1, and a yarn guide eye is provided on the side of the yarn grid 11 facing the pultrusion direction, and the fibers on the reel pass through the yarn guide eye, and a tension adjustment mechanism 12 is provided at the outlet of each yarn guide eye. The tension adjustment mechanism 12 includes a reed tensioner and a roller tensioner. The tension of each yarn passing through the yarn supply system 1 in the present application is controlled separately, and the tension of each yarn is controlled at 100cN to 1000cN.

[0040] As an example, Figure 1 , 4As shown, it also includes a heating system 2 arranged between the yarn supply system 1 and the dipping system 3; the heating system 2 is used to heat the fibers from the yarn supply system 1 and heat the fibers to a first predetermined temperature; the heating system 2 includes a heating mechanism 21 and a heating channel 22, the heating channel 22 transports a heating medium, and the fibers pass through the heating channel 22 to exchange heat with the heating medium; the heating mechanism 21 is used to heat the heating medium in the heating channel 22.

[0041] Based on the above example, a feasible implementation method is that the heating medium in the heating channel 22 of the present application is hot air with a temperature of 90-100°C, and the temperature of the fiber passing through the heating channel is 50-60°C. A first fan is provided in the heating channel 22 to make the flow direction of the hot air in the heating channel opposite to the direction of fiber travel. The heating channel 22 is connected to the return channel to transport the air after heating the fiber to the heating mechanism 21 for heating and then send it back to the heating channel 22 for cyclic heating. The fiber exchanges heat with the hot air in the heating channel 22 by convection, and the increase in the fiber surface temperature accelerates the molecular movement of the resin inside the fiber when the resin is subsequently sprayed on the fiber surface, so as to achieve good penetration of the fiber and the resin.

[0042] Based on the above examples, in a preferred embodiment, the heating medium in the heating channel 22 of the present application is water vapor, the heating mechanism 21 is a steam generator, the heating mechanism 21 transports the generated water vapor to the heating channel 22 to flow in the direction opposite to the fiber travel direction under the action of the first fan, and the fiber enters the heating channel 22 for convective heat exchange with the water vapor. In this embodiment, the fiber surface temperature is increased while the fiber surface humidity is increased, further improving the impregnation effect of the fiber and the resin, so that the resin can better penetrate the fiber and improve the impregnation efficiency.

[0043] Among them, both ends of the heating channel 22 are yarn feeding plates, and the fibers delivered from the yarn supply system 1 according to a predetermined rule enter the heating channel 22 from the yarn feeding plate at one end of the heating channel 22 according to the predetermined rule, and pass through the yarn feeding plate at the other end of the heating channel 22 according to the predetermined rule after being heated in the heating channel 22. Under this condition, it is ensured that each fiber can be heated evenly in the heating channel 22.

[0044] As an example, Figure 1 , 5 As shown, it also includes a cooling system 5 arranged after the curing system 4 and between the traction mechanism 6; the cooling system is used to cool the fiber pultrusion material from the curing system 4 and cool the fiber pultrusion material to a second predetermined temperature; the cooling system 5 includes a cooling mechanism 51 and a cooling channel 52, the cooling channel 52 conveys a cooling medium, and the fiber pultrusion material enters the cooling channel 52 to exchange heat with the cooling medium; the cooling mechanism 51 is used to cool the cooling medium in the cooling channel 52.

[0045] The cooling medium is cold air or cold water below 20°C. The fiber pultrusion material enters the cooling channel 52 and exchanges heat with the cold air or cold water below 20°C, so that the temperature of the fiber pultrusion material passing through the cooling channel 52 is lower than 50°C.

[0046] As an example, Figure 2 As shown, the dipping system 3 includes a dipping tank 30; the first end wall 301 of the dipping tank 30 is evenly provided with yarn inlet holes; the second end wall 302 of the dipping tank 30 is provided with a pultruded material outlet; the fiber enters the first dipping area 31 from the first end wall 301 of the dipping tank 301, and the fiber pultruded material obtained after primary dipping, secondary dipping and pultrusion molding in the dipping tank 30 passes through the second end wall 302 of the dipping tank 30.

[0047] Based on the above examples, a preferred implementation is as follows: Figure 2 As shown, the first yarn threading plate 35, the glue draining plate 34, the second yarn threading plate 36, and the third yarn threading plate 37 are sequentially arranged in the glue dipping tank 30; the first spray unit 311 is between the first end wall 301 and the first yarn threading plate 35; the first infiltration unit 312 is between the first yarn threading plate 35 and the glue draining plate 34; the second spray unit 321 is between the glue draining plate 34 and the second yarn threading plate 36, and the second infiltration unit 322 is between the second yarn threading plate 36 and the third yarn threading plate 37; the pultrusion area 33 is between the third yarn threading plate 37 and the second end wall 302.

[0048] Among them, the first end wall 301, the first yarn threading plate 35, the second yarn threading plate 36, and the third yarn threading plate 37 are the same array hole plates, the leak plate 34 is an array hole plate, the array hole arrangement of the leak plate 34 is the same as that of the first yarn threading plate 35, and the aperture of the array hole of the leak plate 34 is smaller than the aperture of the array hole of the first yarn threading plate 35 to scrape off the resin impregnated by the fiber in the first impregnation unit 312.

[0049] The dipping system 3 is a closed dipping system, and the dipping tank 30 further includes a tank cover for closing the tank opening.

[0050] As an example, Figure 1 As shown, the production system also includes a constant temperature glue supply system 7; the constant temperature glue supply system 7 includes a glue storage device 71 and a heating unit 72, the glue storage device 71 is used to supply resin to the dipping tank 30 and recover the resin discharged from the dipping tank 30, and the heating unit heats the glue storage device to maintain the resin stored in the glue storage device 71 at a third predetermined temperature.

[0051] Among them, the bottom wall of the glue dipping tank 30 is provided with a glue outlet, and the side walls on both sides of the glue dipping tank 30 are provided with glue inlets. The glue storage device 71 is connected to the glue inlet of the glue dipping tank 30 through a glue delivery pipe to supply resin to the glue dipping tank 30, and the glue outlet of the glue dipping tank 30 is connected to the glue storage device 71 through a glue outlet pipe to discharge the waste resin into the glue storage device 71.

[0052] Based on the above example, in a feasible implementation, the glue dipping tank 30 is provided with glue inlets on both side walls corresponding to the first infiltration unit 312 and the second infiltration unit 322, and the glue inlets are connected to the glue storage tank 71 through glue delivery pipes, and the glue storage tank 71 supplies resin to the first infiltration unit 312 and the second infiltration unit 322 through the glue delivery pipes.

[0053] The glue storage tank 71 is also connected to the first nozzle of the first spray unit 311 , the second nozzle of the second spray unit 321 , and the third nozzle of the third spray unit 333 through glue delivery pipes and supplies resin accordingly.

[0054] The glue dipping tank 30 is provided with glue outlets at the bottom of the first infiltration zone 31 , the second infiltration zone 32 and the pultrusion zone 33 . The glue outlets are connected to the glue storage tank 71 through glue outlet pipes to discharge waste resin into the glue storage tank 71 .

[0055] Based on the above example, in another feasible implementation, the glue supply system 7 may only include a glue storage tank 71, the tank wall of the glue storage tank 71 is a double-layer tank wall, and hot water is filled in the interlayer of the double-layer tank wall of the glue storage tank 71 to maintain the resin in the glue storage tank 71 at a predetermined temperature.

[0056] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the article or device including the elements.

[0057] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit the present invention. The present invention is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A pultrusion material production system, characterized in that: include: A yarn supply system (1), a resin dipping system (3), a curing system (4) and a traction mechanism (6) are sequentially arranged along the pultrusion direction; The yarn supply system (1) is used to continuously supply yarn to the production system according to a predetermined rule; The resin impregnation system (3) comprises a first resin impregnation zone (31), a second resin impregnation zone (32) and a pultrusion zone (33), wherein a resin draining plate (34) is arranged between the first resin impregnation zone (31) and the second resin impregnation zone (32); the first resin impregnation zone (31) and the second resin impregnation zone (32) are filled with resin, the first resin impregnation zone (31) is used for primary impregnation of fibers with resin, the resin draining plate (34) is used for draining away part of the resin that is once impregnated with the fibers in the first resin impregnation zone (31), and the second resin impregnation zone (32) is used for secondary impregnation of fibers with resin; a plurality of fibers that are secondary impregnated with resin pass through the pultrusion zone (33), and the pultrusion zone (33) extrude the plurality of fibers into a fiber-resin material of a predetermined shape; The curing system (4) is used to emit ultraviolet light, and the ultraviolet light irradiates the fiber-resin material of a predetermined shape, and the resin in the fiber-resin material is cured to obtain a fiber pultruded material; The traction mechanism (6) is used to traction the fiber at a predetermined speed for continuous pultrusion in the production system; Along the pultrusion direction, the pultrusion zone (33) includes an overflow unit (331), a preforming unit (332), a third spraying unit (333) and a forming unit (334); The overflow unit (331) is used to drain excess resin from the surface of the fibers passing through the second dipping zone (32); The preforming unit (332) comprises a preforming die (01), a plurality of fibers pass through the preforming die (01) and are bonded together, and the preforming die (01) extrude the plurality of fibers into a fiber-resin material of an initial shape and extrude a portion of the resin; The third spray unit (333) is provided with a plurality of third nozzles, and the third nozzles spray resin onto the fiber-resin material in the initial shape so that the resin wraps the surface layer of the fiber-resin material in the initial shape; The molding unit (334) comprises a molding die (02), and the molding die (02) extrude the fiber-resin material of an initial shape into a predetermined shape to obtain the fiber-resin material of the predetermined shape.

2. The pultrusion material production system according to claim 1, characterized in that: Along the pultrusion direction, the first dipping zone (31) comprises a first spray unit (311) and a first wetting unit (312) which are arranged in sequence, and the second dipping zone (32) comprises a second spray unit (321) and a second wetting unit (322) which are arranged in sequence; The first spraying unit (311) is provided with a plurality of first nozzles for spraying resin onto the fibers, wherein the first nozzles spray the resin onto the fiber surface, and the resin wraps the fibers and penetrates into the fibers; The second spraying unit (321) is provided with a plurality of second nozzles for spraying resin onto the fibers, and the second nozzles spray resin onto the fiber surface, so that the resin wraps the fiber surface layer.

3. The pultrusion material production system according to claim 1, characterized in that: The yarn supply system (1) comprises a yarn frame (10) and a tension adjustment mechanism (12), wherein the yarn frame (10) comprises a plurality of yarn grids (11) for placing fiber rolls, and the fiber rolls are arranged in the plurality of yarn grids (11) of the yarn frame (10) according to a predetermined rule, and the tension adjustment mechanism (12) is used to adjust the tension of the fibers transported from the yarn frame (10) to the dipping system (3).

4. The pultrusion material production system according to claim 3, characterized in that: It also includes a heating system (2) arranged between the yarn supply system (1) and the dipping system (3); the heating system (2) is used to heat the fibers from the yarn supply system (1) to a first predetermined temperature; The heating system (2) comprises a heating mechanism (21) and a heating channel (22); the heating channel (22) transports a heating medium, and the fiber passes through the heating channel (22) to exchange heat with the heating medium; the heating mechanism (21) is used to heat the heating medium in the heating channel (22).

5. The pultrusion material production system according to claim 1, characterized in that: It also includes a cooling system (5) arranged between the curing system (4) and the traction mechanism (6); the cooling system is used to cool the fiber pultrusion material from the curing system (4) to cool the fiber pultrusion material to a second predetermined temperature; The cooling system (5) comprises a cooling mechanism (51) and a cooling channel (52); the cooling channel (52) conveys a cooling medium; the fiber pultrusion material enters the cooling channel (52) to exchange heat with the cooling medium; and the cooling mechanism (51) is used to cool the cooling medium in the cooling channel (52).

6. The pultrusion material production system according to claim 1, characterized in that: The dipping system (3) comprises a dipping tank (30); the first end wall (301) of the dipping tank (30) is evenly provided with yarn inlet holes; the second end wall (302) of the dipping tank (30) is provided with a pultruded material outlet; the fiber enters the dipping tank (30) from the first end wall (301) of the dipping tank (30), and after primary dipping, secondary dipping, and pultrusion molding in the dipping tank (30), the fiber-resin material of a predetermined shape is obtained and passes through the second end wall (302) of the dipping tank (30).

7. The pultrusion material production system according to claim 6, characterized in that: The production system further comprises a constant temperature glue supply system (7); the constant temperature glue supply system comprises a glue storage device (71) and a heating unit (72); the glue storage device (71) is used to supply resin to the glue dipping tank (30) and recover the resin discharged from the glue dipping tank (30); the heating unit heats the glue storage device (71) to maintain the resin stored in the glue storage device (71) at a third predetermined temperature; The bottom wall of the glue dipping tank (30) is provided with a glue outlet, and the side walls on both sides of the glue dipping tank (30) are provided with glue inlets. The glue storage device (71) is connected to the glue inlet of the glue dipping tank (30) via a glue delivery pipe to supply resin to the glue dipping tank (30), and the glue outlet of the glue dipping tank (30) is connected to the glue storage device (71) via a glue outlet pipe.

8. A method for producing a pultruded material, characterized in that: The method is carried out in a pultrusion material production system according to any one of claims 1 to 7.

9. A fiberglass pultruded strip, characterized in that: The method is produced by the production system according to any one of claims 1 to 7 or the production method according to claim 8.

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