Production process and production equipment for a glass carbon fiber pultruded plate

Abstract

The present invention discloses a production process of a glass carbon fiber pultruded plate, which comprises the following steps: S1, placing glass carbon fiber yarns on a yarn rack; S2, unwinding the glass carbon fiber yarns placed on the yarn rack, then impregnating the glass carbon fiber yarns through an impregnating tank filled with resin, and defoaming the resin in the tank by ultrasonic waves; S3, the glass carbon fiber yarns after impregnation treatment enter a preforming die, and the resin is further defoamed through a negative pressure and positive pressure ventilation assembly, and is formed into a blank plate through the preforming die, and is cured into a pultruded plate through a curing oven device. In the impregnation process of the present invention, the resin in the impregnating tank is defoamed by an ultrasonic system, and the uncured resin in the subsequent production is further defoamed through a negative pressure and positive pressure ventilation assembly. This process can produce pultruded plate products with fewer defects and significantly improve the quality of the finished pultruded plates.

Description

Technical Field

[0001] The present invention belongs to the technical field of composite material production, and particularly relates to a production process and production equipment for glass carbon fiber pultruded plates. Background Art

[0002] In the existing production of composite materials by pultruding with glass carbon fiber, the composite material is called a pultruded plate, and the pultruded plate can be used to manufacture wind turbine blades; in the production process of the pultruded plate, it is necessary to first immerse the glass carbon fiber yarn in a resin glue tank for sizing treatment. After the sizing treatment, the glass carbon fiber yarn enters a preforming die to form a blank plate. After subsequent treatment of the blank plate, a pultruded plate can be produced. However, in the production process of the pultruded plate, when the glass carbon fiber yarn is subjected to sizing treatment, air bubbles will be mixed in the glass carbon fiber yarn, and it is not easy to eliminate the air bubbles in the subsequent production process. If the air bubbles cannot be eliminated in time, the produced pultruded plate will have great defects and become unqualified products, thus affecting its production efficiency and increasing production costs.

[0003] In view of the defect that the air bubbles in the existing production process of pultruded plates lead to poor forming quality of the pultruded plates, how to effectively reduce or even eliminate the air bubbles existing in the production process of pultruded plates is an urgent technical problem to be solved. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide a production process and production equipment for glass carbon fiber pultruded plates in view of the deficiencies of the prior art.

[0005] The technical solution to achieve the present invention is as follows:

[0006] The production process of the glass carbon fiber pultruded plate of the present invention includes the following steps:

[0007] S1. According to the amount of glass carbon fiber yarn required for the pultruded plate, place the required glass carbon fiber yarns on the yarn rack respectively;

[0008] S2. Unwind the glass carbon fiber yarn placed on the yarn rack, and then soak the glass carbon fiber yarn in a sizing tank filled with resin for sizing treatment; during the sizing process of the glass carbon fiber yarn, ultrasonic waves are emitted by an ultrasonic system to defoam the resin in the tank;

[0009] S3. After the sizing treatment, the glass carbon fiber yarn is extruded to remove the excess resin, and then the glass carbon fiber yarn enters a preforming die and is formed into a blank plate through the preforming die. The blank plate is cured into a pultruded plate by a curing oven device;

[0010] S4. Spray high-speed particles towards the front and back surfaces of the formed pultruded plate to make the surface of the pultruded plate form a rough surface;

[0011] S5. Wind the pultruded sheet with a rough surface onto a winding device.

[0012] A further preferred technical solution of the present invention is that in the step S3, the glass carbon fiber yarn is sequentially subjected to negative pressure treatment by a negative pressure ventilation component and positive pressure treatment by a positive pressure ventilation component in the preforming die.

[0013] A production device for the production process of the above-mentioned glass carbon fiber pultruded sheet, comprising a yarn rack, an impregnating tank, a preforming die, a curing oven device, a traction device, a compressed air shot peening device and a winding device arranged in sequence along the advancing direction of the glass carbon fiber yarn;

[0014] An ultrasonic system is provided in the impregnating tank;

[0015] The preforming die is sequentially provided with a negative pressure ventilation component and a positive pressure ventilation component along its die orifice;

[0016] The compressed air shot peening device is arranged behind the traction device, and the compressed air shot peening device has nozzles for spraying high-speed particles towards the front and back surfaces of the pultruded sheet;

[0017] The winding device is arranged behind the compressed air shot peening device and is used for winding the pultruded sheet.

[0018] Preferably, the impregnating tank includes a resin glue tank, a support tank, an ultrasonic system, and impregnating rollers; a support tank is provided below the resin glue tank, an ultrasonic system is provided on the support tank located below the bottom of the resin glue tank, and a support device is provided between the resin glue tank and the support tank; impregnating rollers are provided above the bottom of the resin glue tank, and the installation height of the impregnating rollers is lower than the outer edge height of the resin glue tank; the ultrasonic waves emitted by the ultrasonic system in the present invention are directed at the glass carbon fiber yarn in the impregnating rollers, enabling the glass carbon fiber yarn to be better infiltrated and the resin in the tank to be defoamed.

[0019] Preferably, the cross-section of the resin glue tank is a trapezoidal groove structure with a wider top and a narrower bottom, and the outer edge at the top of the trapezoidal groove structure extends outward to form a brim surrounding the resin glue tank; a slope surface is provided on the resin glue tank, and the setting of the slope surface facilitates the entry and exit of the glass carbon fiber yarn, making the entry and exit of the glass carbon fiber yarn more convenient and smooth.

[0020] Preferably, five groups of dipping rollers are provided. One dipping roller is arranged along the center line of the trapezoidal groove structure, and two dipping rollers are symmetrically arranged on each side of the center line as the axis of symmetry. The height of a pair of dipping rollers closer to the center line is lower than that of the dipping roller at the center line position, and the height of a pair of dipping rollers farther from the center line is higher than that of the dipping roller at the center line position. In the present invention, the glass carbon fiber yarn passes under the dipping roller at the outermost edge, then passes above the dipping roller at the bottom, under the dipping roller at the center line, and symmetrically through the dipping rollers, so that the glass carbon fiber yarn is completely immersed in the resin to ensure the immersion effect.

[0021] Preferably, the preforming die includes a support base, an upper module, a lower module, a negative pressure ventilation assembly, and a positive pressure ventilation assembly. The lower module and the upper module are sequentially placed on the support base. A notch of the upper module is left in the middle of the lower surface of the upper module along its length direction, and a notch of the lower module is left in the middle of the upper surface of the lower module along its length direction. The upper module and the lower module are combined to splice the notch of the upper module and the notch of the lower module to form a die opening for preforming pultruded plates. The negative pressure ventilation assembly and the positive pressure ventilation assembly are sequentially arranged on the upper module at the inlet of the die opening. After dipping, the uncured glass carbon fiber yarn containing resin is negatively pressured by the negative pressure ventilation assembly first and then positively pressured by the positive pressure ventilation assembly after entering the die opening.

[0022] Preferably, the negative pressure ventilation assembly includes a plurality of negative pressure through holes, a negative pressure air pipe, and a negative pressure nozzle. The negative pressure through holes are arranged in a matrix above the notch of the upper module of the upper module. Each negative pressure through hole is equipped with a negative pressure nozzle, and each negative pressure nozzle is connected to a negative pressure source through a negative pressure air pipe. The negative pressure ejected from the negative pressure nozzle directly acts on the dipped glass carbon fiber yarn.

[0023] In the present invention, two groups of negative pressure through holes are arranged in a matrix above the notch of the upper module. The matrix arrangement spans the width direction of the notch of the upper module, so that the glass carbon fiber yarn in the die opening can be within the negative pressure spraying range, ensuring the uniformity of negative pressure spraying and evenly eliminating the contained bubbles.

[0024] Preferably, the positive pressure ventilation assembly includes a plurality of positive pressure through holes, a positive pressure air pipe, and a positive pressure nozzle. The positive pressure through holes are arranged in a matrix above the notch of the upper module of the upper module. The positive pressure through holes are located behind the negative pressure through holes. Each positive pressure through hole is equipped with a positive pressure nozzle, and each positive pressure nozzle is connected to a positive pressure source through a positive pressure air pipe. The positive pressure ejected from the positive pressure nozzle directly acts on the glass carbon fiber yarn after negative pressure treatment.

[0025] In this embodiment, the positive pressure through-holes are arranged in a matrix form, with two groups set above the upper module notch. The matrix arrangement spans the width direction of the upper module notch, enabling all the glass carbon fiber yarns within the die orifice to be within the range of positive pressure injection, ensuring the uniformity of positive pressure injection and uniformly eliminating the contained air bubbles.

[0026] Preferably, the nozzle of the compressed air shot peening device is inclined towards the traveling direction of the pultruded plate.

[0027] Adopting the above technical solutions, the present invention has the following beneficial effects:

[0028] (1) In the production process of the glass carbon fiber pultruded plate disclosed in the present invention, ultrasonic waves are emitted by an ultrasonic system to perform defoaming treatment on the glass carbon fiber yarns in the impregnation tank. The glass carbon fiber yarns after ultrasonic treatment contribute to the infiltration of the resin in the tank and the defoaming of the resin, reducing the amount of air bubbles mixed in the subsequent production process, so as to produce pultruded plate products with fewer defects.

[0029] (2) In the production process of the glass carbon fiber pultruded plate in the present invention, ultrasonic waves emitted by the ultrasonic system are used to defoam the resin in the tank during the impregnation process. And in the subsequent preforming die treatment, a negative pressure ventilation component and a positive pressure ventilation component are used to perform re-defoaming treatment on the resin in the glass carbon fiber yarns in the preforming die, thoroughly eliminating the air bubbles mixed in the process of producing the pultruded plate, and ensuring that the produced pultruded plate has fewer defects and excellent quality.

[0030] (3) In the impregnation tank of the present invention, an ultrasonic system is provided at the bottom of the resin glue tank. The ultrasonic waves emitted by the ultrasonic system contribute to the infiltration of the glass carbon fiber yarns in the resin glue tank and the defoaming of the resin in the tank, improving the infiltration effect of the glass carbon fiber yarns and eliminating the air bubbles therein, improving the forming quality of the pultruded plate, and producing pultruded plate products with very few defects.

[0031] (4) An impregnation roller is provided in the impregnation tank of the present invention. The installation height of the impregnation roller is lower than the outer edge height of the resin glue tank. Such a height design can enable the resin in the resin glue tank to completely cover the impregnation roller. There are five groups of impregnation rollers, and the five groups of impregnation rollers are arranged at different heights according to their different positions, optimizing the structural arrangement of the impregnation rollers, ensuring that the glass carbon fiber yarns at the impregnation roller can be completely immersed in the resin, and ensuring their infiltration effect.

[0032] (5) In the present invention, a negative pressure ventilation component and a positive pressure ventilation component are provided on the upper module of the preforming die. After the resin-containing glass carbon fiber yarns are impregnated and enter the die opening, they are first subjected to negative pressure treatment by the negative pressure ventilation component and then to positive pressure treatment by the positive pressure ventilation component. Through the treatment of negative pressure and positive pressure, the air bubbles mixed in the resin in the uncured resin-containing glass carbon fiber yarns can be effectively eliminated, thereby reducing the defects in the finished pultruded plates and ensuring the forming quality and economic benefits of the pultruded plates.

[0033] (6) The negative pressure ventilation component and the positive pressure ventilation component of the upper module in the preforming die of the present invention are arranged in a matrix form on the upper module. Each negative pressure or positive pressure nozzle is ventilated through a separate negative pressure or positive pressure through hole, ensuring the uniformity of ventilation. It can eliminate the air bubbles mixed in the glass carbon fiber yarns without causing the glass carbon fiber yarns to bear excessive pressure and affecting the pultrusion preforming of the plates, ensuring the quality of the pultruded plates and forming pultruded plates with few defects. Description of the Drawings

[0034] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments in conjunction with the drawings, where:

[0035] Figure 1 is the production equipment flow chart of the glass carbon fiber pultruded plate described in the present invention;

[0036] Figure 2 is the structural schematic diagram of the impregnation tank described in the present invention;

[0037] Figure 3 is the structural schematic diagram of the preforming die described in the present invention;

[0038] Figure 4 is the structural schematic diagram of the upper module of the preforming die described in the present invention;

[0039] Figure 5 is the structural schematic diagram of the lower module of the preforming die described in the present invention.

[0040] In the figure, 1 - impregnation tank, 11 - resin glue tank, 12 - support tank, 13 - support spring, 131 - limit groove, 14 - support shaft, 15 - flange linear bearing, 16 - ultrasonic system, 17 - impregnation roller, 2 - preforming die, 21 - support seat, 22 - upper module, 221 - upper module notch, 222 - negative pressure through hole, 223 - negative pressure air pipe, 224 - negative pressure nozzle, 225 - positive pressure through hole, 226 - positive pressure air pipe, 227 - positive pressure nozzle, 23 - lower module, 231 - lower module notch, 24 - positioning through hole, 3 - glass carbon fiber yarn. Detailed Embodiments

[0041] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments described.

[0042] Embodiment: The glass carbon fiber pultruded sheet referred to in this embodiment can be a carbon fiber sheet, or a glass fiber sheet, or a composite sheet of carbon fiber and glass fiber; a production process of a glass carbon fiber pultruded sheet disclosed in this embodiment includes the following steps:

[0043] S1. Place the required glass carbon fiber yarns on the yarn racks according to the amount of glass carbon fiber yarns required for the pultruded sheet.

[0044] S2. Unroll the glass carbon fiber yarns placed on the yarn racks, and then immerse the glass carbon fiber yarns in an impregnating tank filled with resin for impregnation treatment; during the impregnation process of the glass carbon fiber yarns, ultrasonic waves are emitted by an ultrasonic system to defoam the resin in the tank.

[0045] S3. The glass carbon fiber yarns after impregnation treatment are further extruded to remove the excess resin, and then the glass carbon fiber yarns enter a preforming die. The glass carbon fiber yarns are sequentially subjected to negative pressure treatment by a negative pressure ventilation component and positive pressure treatment by a positive pressure ventilation component in the preforming die; the preformed blank sheet is formed by the preforming die, and the preformed blank sheet is cured into a pultruded sheet by a curing oven device.

[0046] S4. Spray high-speed particles onto the front and back surfaces of the formed pultruded sheet to form a rough surface on the surface of the pultruded sheet.

[0047] S5. Wind the pultruded sheet with a rough surface onto a winding device.

[0048] In the production process of the glass carbon fiber pultruded sheet disclosed in this embodiment, ultrasonic waves are emitted by an ultrasonic system to defoam the resin in the tank for the glass carbon fiber yarns in the impregnating tank. The glass carbon fiber yarns after ultrasonic treatment are helpful for impregnation and defoaming of the resin in the tank, reducing the amount of bubbles mixed in the subsequent production process, so as to produce pultruded sheet products with fewer defects; and in the subsequent preforming die treatment, a negative pressure ventilation component and a positive pressure ventilation component are used to perform secondary defoaming treatment on the resin in the glass carbon fiber yarns in the preforming die, completely eliminating the bubbles mixed in the process of producing the pultruded sheet, and ensuring that the produced pultruded sheet has fewer defects and excellent quality.

[0049] This embodiment also discloses a production device for the production process of the above-mentioned glass carbon fiber pultruded sheet, as shown in the attached Figure 1As shown in the figure, the production equipment in this embodiment includes a yarn rack, an impregnation tank, a preforming mold, a curing oven equipment, a traction device, a compressed air shot peening device, and a winding device, which are arranged in sequence along the traveling direction of the glass carbon fiber yarn. First, the glass carbon fiber yarn is unwound from the yarn rack, and then impregnated in the impregnation tank. During the process, ultrasonic waves are emitted by the ultrasonic system arranged in the impregnation tank to defoam the resin in the tank. After impregnation, the uncured resin-containing glass carbon fiber yarn enters the preforming mold. The glass carbon fiber yarn undergoes negative pressure treatment by the negative pressure ventilation component and positive pressure treatment by the positive pressure ventilation component in the preforming mold. Through multiple gradient templates, the glass carbon fiber yarn forms a predetermined shape, i.e., a blank sheet, in the cross-sectional direction, and then is cured into a pultruded sheet by the curing oven equipment. Finally, under the traction of the traction device, it moves away from the yarn rack. During the movement, it will pass through the compressed air shot peening device arranged behind the traction device. The compressed air shot peening device has nozzles that spray high-speed particles towards the front and back sides of the pultruded sheet. In this embodiment, the nozzles of the compressed air shot peening device are inclined towards the traveling direction of the pultruded sheet. Since the tensile strength is better than the shear strength in the fiber length direction, setting the compressed air shot peening along the traveling direction of the pultruded sheet can reduce the influence on the fibers in the shear direction and improve the overall strength of the pultruded sheet. The compressed air shot peening device is used to make the surface of the pultruded sheet uneven, achieving the effect of roughening the surface of the pultruded sheet. Finally, the pultruded sheet is wound on the winding device by winding.

[0050] As shown in the Figure 2 figure, the impregnation tank 1 includes a resin tank 11 for holding resin, a support tank 12, an ultrasonic system 16, and an impregnation roller 17. The cross-section of the resin tank 11 is a trapezoidal groove structure with a wider top and a narrower bottom. The outer edge of the top of the trapezoidal groove structure extends outward to form a brim surrounding the resin tank 11. In this embodiment, the resin tank 11 of the impregnation tank 1 is provided with a slope surface, and the setting of the slope surface facilitates the entry and exit of the glass carbon fiber yarn 13, making the entry and exit of the glass carbon fiber yarn 13 more convenient and smooth.

[0051] In the dipping tank 1 of the present embodiment, a support tank 12 is provided below the resin glue tank 11, an ultrasonic system 16 is provided on the support tank 12 located below the bottom of the resin glue tank 1, and a support device is provided between the resin glue tank 11 and the support tank 12; in the present embodiment, the support tank 12 is provided below the resin glue tank 11, and the structure of the support tank 12 is adapted to the structure of the resin glue tank 11, and the bottom surface, the slope surface and the brim of the resin glue tank 11 are all parallel to the components of the support tank 12; the ultrasonic system 16 is located in the middle position below the bottom of the resin glue tank 11; the ultrasonic wave emitted by the ultrasonic system 16 in the dipping tank 1 of the present embodiment is directly facing the glass fiber yarn 13 in the dipping roller 17, so that the glass fiber yarn 13 can be better infiltrated and realize the defoaming of the resin in the tank; the support device in the present embodiment includes a support spring 13, a limit groove 131, a support shaft 14 and a flange linear bearing 15; the support spring 13 is provided at Between the lower surface of the bottom of the resin glue groove 11 and the upper surface of the bottom of the support groove 12, limit grooves 131 are respectively provided at both ends of the support spring 3 to limit it; the flange linear bearing 15 is arranged on the brim of the resin glue groove 11, which is penetrated on the support shaft 14, and the bottom of the support shaft 14 is fixed on the support groove 12. The support device is a sliding support composed of a support spring 13, a support shaft 14 and a flange linear bearing 15 to ensure stable support between the resin glue groove 11 and the support groove 12; the support device provided in this embodiment, when the amount of resin in the resin glue groove 11 is reduced, the pressure borne by the support spring 13 is reduced and the resin glue groove 11 is lifted upward. Under the combination of the flange linear bearing 15 and the support shaft 14, the resin glue groove 11 is lifted upward as a whole, so that the dipping roller 17 is displaced downward relative to the resin glue groove 11, ensuring that the dipping roller 17 is still in the resin of the resin glue groove 11, thereby improving the adaptability of the resin glue groove 11.

[0052] As attached Figure 2 As shown, in order to facilitate the impregnation of the glass-carbon fiber yarn 13, a dipping roller 17 is provided above the bottom of the resin glue tank 11, and the setting height of the dipping roller 17 is lower than the outer edge height of the resin glue tank 11; there are five groups of dipping rollers 17 in the dipping tank 1 of this embodiment, one is provided along the center line of the trapezoidal groove structure, and two dipping rollers 17 are symmetrically provided with the center line as the symmetry axis; the setting height of a pair of dipping rollers 17 closer to the center line is lower than the dipping roller 17 provided at the center line position, and the setting height of a pair of dipping rollers 17 farther from the center line is higher than the dipping roller 17 provided at the center line position. The glass-carbon fiber yarn 13 in the dipping tank 1 of this embodiment passes from below the dipping roller 17 located at the edge, and then passes through the top of the dipping roller 17 located at the bottom, the bottom of the dipping roller 17 located at the center line, and passes through the dipping rollers 17 symmetrically, so that the glass-carbon fiber yarn 13 is completely impregnated in the resin to ensure the impregnation effect.

[0053] In this embodiment, the dipping tank 1 is provided with an ultrasonic system 16 at the bottom of the resin glue tank 11. The ultrasonic waves emitted by the ultrasonic system 16 contribute to the infiltration of the glass carbon fiber yarn 13 in the resin glue tank 11 and the defoaming of the resin in the tank, improving the infiltration effect of the glass carbon fiber yarn 13 and eliminating the bubbles in it, improving the forming quality of the pultruded plate, and producing pultruded plate products with few defects. In this embodiment, a dipping roller 17 is provided. The installation height of the dipping roller 17 is lower than the outer edge height of the resin glue tank 11. Such a height design can ensure that the resin in the resin glue tank 11 completely covers the dipping roller 17. There are five groups of dipping rollers 17. According to the different positions of the dipping roller 17, the five groups of dipping rollers 17 are arranged at different heights to optimize the structural arrangement of the dipping roller 17, ensuring that the glass carbon fiber yarn 13 at the dipping roller 17 can be completely immersed in the resin and ensuring its infiltration effect.

[0054] In this embodiment, the preforming die 2 is successively provided with a negative pressure ventilation component and a positive pressure ventilation component along its die orifice; as shown in the Figure 3 attachment, the preforming die 2 includes a support base 21, an upper module 22, a lower module 23, a negative pressure ventilation component and a positive pressure ventilation component. The lower module 23 and the upper module 22 are successively placed on the support base 21. A upper module notch 221 is reserved in the middle of the lower surface of the upper module 22 along its length direction, and a lower module notch 231 is reserved in the middle of the upper surface of the lower module 23 along its length direction. The upper module 22 and the lower module 23 are combined to splice the upper module notch 221 and the lower module notch 231 to form the die orifice for preforming the pultruded plate. The negative pressure ventilation component and the positive pressure ventilation component are successively provided on the upper module 22 at the inlet of the die orifice. After the impregnated and uncured resin-containing glass carbon fiber yarn enters the die orifice, it is first subjected to negative pressure treatment by the negative pressure ventilation component and then subjected to positive pressure treatment by the positive pressure ventilation component.

[0055] As shown in the Figure 4 attachment, the negative pressure ventilation component in the preforming die 2 of this embodiment includes a plurality of negative pressure through holes 222, a negative pressure air pipe 223 and a negative pressure nozzle 224. The negative pressure through holes 222 are arranged in a matrix form above the upper module notch 221 of the upper module 22. Each negative pressure through hole 222 is equipped with a negative pressure nozzle 224, and each negative pressure nozzle 224 is connected to a negative pressure through the negative pressure air pipe 223. The negative pressure ejected by the negative pressure nozzle 224 directly acts on the impregnated glass carbon fiber yarn. In this embodiment, two sets of negative pressure through holes 222 are arranged in a matrix form above the upper module notch 221, and the matrix arrangement form spans the width direction of the upper module notch 221, so that the glass carbon fiber yarn in the die orifice can be within the negative pressure spraying range, ensuring the uniformity of the negative pressure spraying and uniformly eliminating the contained bubbles.

[0056] As shown in the Figure 4As shown in the figure, the positive pressure ventilation component in the preforming mold 2 of this embodiment includes a number of positive pressure through holes 225, positive pressure air pipes 226, and positive pressure nozzles 227; the positive pressure through holes 225 are arranged in a matrix above the upper module slot 221 of the upper module 22. The positive pressure through holes 225 are located behind the negative pressure through holes 222. Each positive pressure through hole 225 is equipped with a positive pressure nozzle 227. Each positive pressure nozzle 227 is filled with positive pressure through a positive pressure air pipe 226, and the positive pressure ejected from the positive pressure nozzle 227 directly acts on the glass carbon fiber yarn after negative pressure treatment; in this embodiment, two sets of positive pressure through holes 225 are arranged in a matrix above the upper module slot 221, and the matrix arrangement straddles the width direction of the upper module slot 221, so that the glass carbon fiber yarn located inside the mold opening can be within the range of positive pressure spraying, ensuring the uniformity of positive pressure spraying and evenly eliminating the bubbles contained in the resin.

[0057] As shown in the attached Figure 4 and 5 As shown in the figure, in the preforming mold 2 of this embodiment, both the upper module 22 and the lower module 23 are cuboid structures. The size of the mold opening is set according to the cross-sectional dimensions of the pultruded plate. Positioning through holes 24 are evenly provided on the upper module 22 and the lower module 23 on both sides of the mold opening. The positioning through holes 24 are arranged along the length direction of the upper module 22 and the lower module 23. The upper module 22 and the lower module 23 are fixedly connected by fastening pieces passing through the positioning through holes 24. In this embodiment, the positioning through holes 24 are evenly arranged on the upper module 22 and the lower module 23, ensuring the tight splicing of the upper module 22 and the lower module 23 and the integrity of the mold opening.

[0058] In the preforming mold 2 of this embodiment, the support base 21 includes four groups of support legs and a support plate; support legs are fixed at the four corners of the bottom of the support plate, and adjacent support legs are fixedly connected by connecting rods. The lower module 23 is placed on the support plate. The height of the support base 21 in this embodiment is set according to the actual use height of the required preforming mold to ensure the normal operation of the preforming mold.

[0059] In this embodiment, the preforming die 2 is provided with a negative-pressure ventilation component and a positive-pressure ventilation component on the upper module 22 of the preforming die 2. After impregnation, the uncured resin-containing glass carbon fiber yarn enters the die opening and is first subjected to negative-pressure treatment by the negative-pressure ventilation component and then to positive-pressure treatment by the positive-pressure ventilation component. Through the treatment of negative pressure and positive pressure, the air bubbles mixed in the resin of the uncured resin-containing glass carbon fiber yarn can be effectively eliminated, thereby reducing the defects in the finished pultruded plate and ensuring the forming quality and economic benefits of the pultruded plate. In this embodiment, the negative-pressure ventilation component and the positive-pressure ventilation component of the upper module 22 are arranged in a matrix form on the upper module 22, and each negative-pressure or positive-pressure nozzle 227 is ventilated through a separate negative-pressure or positive-pressure through-hole 225, ensuring the uniformity of ventilation. It can eliminate the air bubbles mixed in the glass carbon fiber yarn without causing the glass carbon fiber yarn to bear too much pressure and affecting the pultrusion preforming of the plate, ensuring the quality of the pultruded plate and forming a pultruded plate with few defects.

[0060] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A production device for glass carbon fiber pultruded plates, characterized in that, It includes a yarn rack, an impregnating tank, a preforming die, a curing oven equipment, and a traction device that are sequentially arranged along the traveling direction of the glass carbon fiber yarn: An ultrasonic system is provided in the impregnating tank, and the ultrasonic system emits ultrasonic waves; The preforming die includes a support base, an upper module, a lower module, a negative pressure ventilation component, and a positive pressure ventilation component; the lower module and the upper module are sequentially placed on the support base; a notch of the upper module is left in the middle of the lower surface of the upper module along its length direction, and a notch of the lower module is left in the middle of the upper surface of the lower module along its length direction. The notch of the upper module and the notch of the lower module are combined and spliced to form a die orifice for preforming the pultruded sheet; a negative pressure ventilation component and a positive pressure ventilation component are sequentially provided on the upper module at the inlet of the die orifice. After the impregnated glass carbon fiber yarn enters the die orifice, it is first subjected to negative pressure treatment by the negative pressure ventilation component and then subjected to positive pressure treatment by the positive pressure ventilation component; The preforming die is sequentially provided with a negative pressure ventilation component and a positive pressure ventilation component along its die orifice; The negative pressure ventilation component includes a plurality of negative pressure through holes, a negative pressure air pipe, and a negative pressure nozzle; the negative pressure through holes are arranged in a matrix form above the notch of the upper module of the upper module, and each negative pressure through hole is equipped with a negative pressure nozzle. Each negative pressure nozzle is connected to a negative pressure through a negative pressure air pipe, and the negative pressure ejected from the negative pressure nozzle directly acts on the impregnated glass carbon fiber yarn; The positive pressure ventilation component includes a plurality of positive pressure through holes, a positive pressure air pipe, and a positive pressure nozzle; the positive pressure through holes are arranged in a matrix form above the notch of the upper module of the upper module, and the positive pressure through holes are located behind the negative pressure through holes. Each positive pressure through hole is equipped with a positive pressure nozzle, and each positive pressure nozzle is connected to a positive pressure through a positive pressure air pipe. The positive pressure ejected from the positive pressure nozzle directly acts on the glass carbon fiber yarn after negative pressure treatment; 2. The production equipment of the glass carbon fiber pultruded sheet according to claim 1, characterized in that, The impregnating tank includes a resin glue tank, a support tank, an ultrasonic system, and impregnating rollers; a support tank is provided below the resin glue tank, an ultrasonic system is provided on the support tank below the bottom of the resin glue tank, and a support device is provided between the resin glue tank and the support tank; impregnating rollers are provided above the bottom of the resin glue tank, and the installation height of the impregnating rollers is lower than the outer edge height of the resin glue tank.

3. The production equipment of the glass carbon fiber pultruded sheet according to claim 2, characterized in that, The cross-section of the resin glue tank is a trapezoidal groove structure with a wider upper part and a narrower lower part, and the outer edge at the top of the trapezoidal groove structure extends outward to form a brim surrounding the resin glue tank.

4. The production equipment of the glass carbon fiber pultruded sheet according to claim 3, characterized in that, Five groups of impregnating rollers are provided. One is arranged along the center line of the trapezoidal groove structure, and two impregnating rollers are symmetrically arranged on each side of the center line as the axis of symmetry; the installation height of a pair of impregnating rollers closer to the center line is lower than that of the impregnating roller arranged at the center line position, and the installation height of a pair of impregnating rollers farther from the center line is higher than that of the impregnating roller arranged at the center line position.

5. A production process of a production equipment for the glass carbon fiber pultruded sheet described in claim 1, characterized in that, It includes the following steps: S1. According to the amount of glass carbon fiber yarn required for the pultruded sheet, place the required glass carbon fiber yarns on the yarn rack respectively; S2. Unroll the glass carbon fiber yarn placed on the yarn rack, and then immerse the glass carbon fiber yarn in the impregnating tank filled with resin for impregnation treatment; During the impregnation process of the glass carbon fiber yarn, ultrasonic waves are used to defoam the resin in the tank; S3. The impregnated glass carbon fiber yarn is further extruded to remove the excess resin, and then the glass carbon fiber yarn enters the preforming die and is formed into a blank plate through the preforming die. The blank plate is cured into a pultruded plate by a curing oven device; S4. The pultruded plate formed in step S3 is processed and then wound onto a winding device.

6. The production process of the glass carbon fiber pultruded sheet according to claim 5, characterized in that, In the said step S3, the glass carbon fiber yarn is sequentially subjected to negative pressure treatment by the negative pressure ventilation component and positive pressure treatment by the positive pressure ventilation component in the preforming die.

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