Carbon filament infiltration device and carbon fiber pultrusion line

Abstract

The utility model discloses a carbon filament infiltration device and carbon fiber pull -out board's production line. The carbon filament infiltration device includes: carbon filament preheater, wear plate, dip tank and extruding unit that are set in turn along the moving direction of carbon filament, is equipped with the yarn pressing unit in dip tank, and the carbon filament arrangement mode of carbon filament preheater is same with the carbon filament arrangement mode of wear plate. Through above setting, can make carbon filament in preheating and dip process arrangement consistent, improve the uniformity of dip, and then improve the quality and performance of carbon filament, and bring the convenience to the operator wear yarn.

Description

Technical Field

[0001] This utility model belongs to the field of carbon fiber pultruded sheet manufacturing technology, specifically, it relates to a carbon filament impregnation device and a production line for carbon fiber pultruded sheets. Background Technology

[0002] In the production of carbon fiber, the impregnation of carbon filaments is a crucial step. Good impregnation can improve the bonding strength between carbon fiber and the matrix material, thereby enhancing the performance of carbon fiber composites. However, existing carbon filament impregnation devices have some problems, such as inconsistent arrangement of carbon filaments during preheating and impregnation, leading to uneven impregnation and affecting the quality and performance of the carbon filaments. Therefore, it is necessary to develop a novel carbon filament impregnation device to solve these problems.

[0003] In view of this, this utility model is hereby proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a carbon fiber impregnation device. By setting the carbon fiber arrangement of the carbon fiber preheater to be the same as that of the carbon fiber arrangement of the yarn threading plate, the carbon fiber can be arranged in a consistent manner during the preheating and impregnation process, thereby improving the uniformity of impregnation, thus improving the quality and performance of the carbon fiber, and making it easier for operators to thread the yarn.

[0005] To achieve the aforementioned objectives of this utility model, the basic concept of the technical solution adopted by this utility model is as follows: This utility model provides a carbon filament impregnation device, comprising: A carbon wire preheater, a yarn threading plate, a glue-impregnating tank, and an extrusion unit are arranged sequentially along the direction of carbon wire movement. A yarn pressing unit is provided inside the glue-impregnating tank. The carbon wire arrangement in the carbon wire preheater is the same as that in the yarn threading plate.

[0006] Furthermore, the number of carbon filament layers and carbon filament paths in the carbon filament preheater are the same as those in the yarn threading plate.

[0007] Furthermore, the number of carbon fiber layers in the threading plate is less than the initial number of carbon fiber layers in the threading plate; The number of carbon fiber paths on the threading plate is greater than the initial number of carbon fiber paths on the threading plate.

[0008] Furthermore, the yarn pressing unit includes several layers of yarn pressing rollers distributed vertically; The number of layers of the pressing roller is less than or equal to the number of carbon fiber layers of the yarn threading plate, but greater than the initial number of layers of the pressing roller.

[0009] Furthermore, the extrusion unit includes several layers of extrusion rollers distributed vertically, with each pair of extrusion rollers working together to extrude the carbon wire; The number of layers of the extrusion roller is less than or equal to the number of carbon fiber layers of the yarn threading plate, but greater than the initial number of layers of the extrusion roller.

[0010] Furthermore, the number of layers of the pressing roller is equal to the number of layers of the extrusion roller.

[0011] Furthermore, the initial number of carbon fiber layers in the threading plate is eighteen, and the initial number of carbon fiber paths is eight; the initial number of carbon fiber layers in the threading plate is twelve, and the initial number of carbon fiber paths is twelve. The initial number of layers of the pressing roller is four, and the initial number of layers of the squeezing roller is four; the number of layers of the pressing roller is six, and the number of layers of the squeezing roller is six.

[0012] Furthermore, the line connecting the centers of the cross-sections of several laminating yarn rollers is arranged to gradually slope upwards from the inlet to the outlet of the impregnation tank.

[0013] Furthermore, the angle of inclination of the line connecting the centers of the cross-sections of several laminating yarn rollers is 60 degrees.

[0014] This utility model also provides a production line for carbon fiber pultruded sheets, including a preforming device and a carbon fiber impregnation device provided in the above technical solution; The carbon filament impregnation device and the preforming device are arranged sequentially along the direction of carbon filament movement.

[0015] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0016] By setting the carbon wire arrangement in the carbon wire preheater to be the same as that in the yarn threading plate, the carbon wires can be arranged consistently during preheating and impregnation, improving the uniformity of impregnation, thereby improving the quality and performance of the carbon wires, and making it easier for operators to thread the yarn.

[0017] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the carbon filament impregnation device in an embodiment of this utility model; Figure 2 This is a distribution diagram of the pressing roller and the extrusion roller in an embodiment of this utility model; Figure 3 This is a distribution diagram of the pressure rollers in an embodiment of this utility model.

[0019] In the diagram: 1-carbon fiber preheater; 2-yarn threading plate; 3-impregnation tank; 4-yarn pressing unit; 41-yarn pressing roller; 5-extrusion unit; 51-extrusion roller.

[0020] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a carbon filament impregnation device, comprising: A carbon wire preheater 1, a yarn threading plate 2, a glue-impregnating tank 3, and an extrusion unit 5 are arranged sequentially along the moving direction of the carbon wire. A yarn pressing unit 4 is provided in the glue-impregnating tank 3. The carbon wire arrangement in the carbon wire preheater 1 is the same as that in the yarn threading plate 2.

[0025] In the embodiments of this utility model, by setting the carbon wire arrangement of the carbon wire preheater 1 to be the same as that of the yarn threading plate 2, the carbon wires can be arranged in a consistent manner during the preheating and impregnation process, thereby improving the uniformity of impregnation, thus improving the quality and performance of the carbon wires, and making it more convenient for operators to thread the yarn.

[0026] The carbon filament impregnation device has multiple key components arranged sequentially along the direction of carbon filament movement. This sequential arrangement allows the carbon filament to complete preheating, positioning, impregnation, and extrusion operations step by step according to a specific process flow, ensuring the continuity and effectiveness of the impregnation process.

[0027] The carbon filament preheater 1 preheats the carbon filament, which alters its physical properties, such as increasing its surface activity, making it easier to bond with the adhesive and preparing it for the subsequent impregnation process. Simultaneously, preheating reduces stress on the carbon filament caused by temperature differences during impregnation, improving the quality stability of the carbon filament.

[0028] The carbon filament preheater 1 includes a heating chamber and a heating element disposed in the heating chamber. The heating chamber is provided with a carbon filament inlet and a carbon filament outlet. The carbon filament enters the heating chamber from the carbon filament inlet and is discharged from the carbon filament outlet after preheating. The carbon filament inlets and carbon filament outlets are respectively divided into several rows and several columns. The several rows are several layers and the several columns are several paths. For example, 12 rows are 12 layers and 12 columns are 12 paths.

[0029] The threading plate 2 serves to position and guide the carbon wires, ensuring that the carbon wires enter the impregnation tank 3 according to the predetermined path and arrangement. The threading plate 2 has several holes for the carbon wires to pass through. The holes are divided into several rows and several columns. The rows are layers and the columns are paths, which can precisely control the position of each carbon wire and prevent the carbon wires from getting tangled or deviating from the track during the impregnation process.

[0030] The carbon wire arrangement of the carbon wire preheater 1 is the same as that of the yarn threading plate 2, mainly because the number of carbon wire layers and the number of carbon wire paths in the carbon wire preheater 1 are the same as those in the yarn threading plate 2.

[0031] A temperature sensor and a heating wire are installed inside the impregnation tank 3. The heating wire is evenly connected to the side wall of the impregnation tank and is used to heat the glue liquid in the impregnation tank. The temperature sensor and the heating wire are electrically connected to the controller.

[0032] A liquid level sensor is installed inside the impregnation tank 3. The liquid level sensor is used to detect the liquid level of the adhesive in the impregnation tank and is electrically connected to the controller.

[0033] The glue inlet of the glue dipping tank 3 is connected to the glue storage tank through a pipeline, and the glue outlet is connected to the waste glue tank through a pipeline. An electric valve is installed at the glue outlet. A viscosity sensor is installed inside the glue dipping tank, and a glue injection unit is installed inside the glue storage tank. The electric valve, viscosity sensor, and glue injection unit are electrically connected to the controller.

[0034] By installing a viscosity sensor inside the impregnation tank 3, the viscosity of the adhesive is monitored in real time. When the adhesive viscosity is insufficient, automatic adhesive discharge and injection are performed, enabling rapid adhesive changeover. This avoids situations where the adhesive fails to adhere effectively after prolonged use, eliminating the need for manual supervision, improving adhesive utilization, reducing waste, ensuring the impregnation effect of the carbon fiber, strengthening the bond, and improving the quality and mechanical properties of the finished carbon fiber product. The controller activates the electric valve to discharge the adhesive from the impregnation tank 3 into the waste adhesive tank. The bottom of the impregnation tank 3 is tapered to accelerate adhesive discharge. Then, the electric valve is closed, and the adhesive is injected into the impregnation tank 3 through the injection unit from the inlet.

[0035] Depending on actual needs, the same number of carbon filaments can be distributed in various ways on the carbon filament preheater 1 and the yarn threading plate 2.

[0036] It should be noted that the number of carbon filament layers can be less than the number of layers of perforations on the threading plate 2, carbon filament inlet on the carbon filament heater, and carbon filament outlet on the carbon filament heater. The number of carbon filament paths can be less than the number of paths of perforations on the threading plate 2, carbon filament inlet on the carbon filament heater, and carbon filament outlet on the carbon filament heater. Each perforation, each carbon filament inlet, and each carbon filament outlet can allow at least one carbon filament to pass through.

[0037] The impregnation tank 3 is the core component for impregnating carbon wire with adhesive. It contains adhesive, and when the carbon wire passes through the impregnation tank 3, it can fully contact the adhesive, allowing the adhesive to adhere to the surface of the carbon wire and achieve the purpose of impregnation.

[0038] The yarn pressing unit 4 installed in the impregnation tank 3 can further control the immersion depth and immersion time of the carbon filaments in the adhesive solution, ensuring that each carbon filament can be evenly wetted by the adhesive solution.

[0039] The extrusion unit 5 is located after the impregnation tank 3 and at the outlet of the impregnation tank 3. It is used to extrude the impregnated carbon wire. Through extrusion, excess adhesive on the surface of the carbon wire can be removed, making the adhesive distribution on the surface of the carbon wire more uniform. At the same time, the diameter and shape of the carbon wire can be adjusted, thereby improving the quality and performance of the carbon wire.

[0040] During carbon fiber impregnation, the carbon fibers first enter the carbon fiber preheater 1 for preheating to increase their surface activity. Then, the preheated carbon fibers pass through the yarn threading plate 2 and enter the impregnation tank 3 according to a predetermined arrangement. In the impregnation tank 3, the yarn pressing unit 4 controls the impregnation depth and time of the carbon fibers to ensure they are fully impregnated with the adhesive. Finally, the impregnated carbon fibers pass through the extrusion unit 5 to remove excess adhesive, completing the entire impregnation process.

[0041] Furthermore, the number of carbon fiber layers in the threading plate 2 is less than the initial number of carbon fiber layers in the threading plate 2; The number of carbon fiber paths in threading plate 2 is greater than the initial number of carbon fiber paths in threading plate 2.

[0042] For example, the initial number of carbon fiber layers in threading plate 2 is eighteen, and the initial number of carbon fiber paths is eight; the initial number of carbon fiber layers in threading plate 2 is twelve, and the initial number of carbon fiber paths is twelve. When the number of carbon filaments is the same, the number of carbon filament layers on the threading plate 2 is different from the initial number of carbon filament layers on the threading plate 2, and the number of carbon filament paths on the threading plate 2 is also different from the initial number of carbon filament paths on the threading plate 2. In this application, the number of carbon filament layers on the threading plate 2 is increased, and the number of carbon filament paths on the threading plate 2 is decreased. The decrease in the number of carbon filament paths on the threading plate 2 can reduce the width of the carbon filaments, which can meet the carbon filament width of the preforming device in the carbon fiber pultrusion plate production line, prevent the carbon filaments from being too wide and flipping on both sides, and make the carbon filaments symmetrical on both sides after preforming, and the straightness of the carbon filaments can be effectively controlled.

[0043] Furthermore, the yarn pressing unit 4 includes several yarn pressing rollers 41 distributed vertically; The number of layers of the pressing roller 41 is less than or equal to the number of carbon fiber layers of the threading plate 2, but greater than the initial number of layers of the pressing roller 41.

[0044] One pressing roller 41 serves as one layer of pressing roller 41, and each layer of pressing roller 41 corresponds to at least one layer of carbon fiber. The number of layers of pressing roller 41 is less than or equal to the number of carbon fiber layers of yarn threading plate 2. This can reduce the number of pressing rollers 41 used while ensuring the wetting effect, thereby reducing costs and eliminating the need for one layer of carbon fiber to correspond to one pressing roller 41.

[0045] Each pressing roller 41 corresponds to at least one layer of carbon fiber. For example, the pressing unit 4 includes four pressing rollers, which are the first pressing roller, the second pressing roller, the third pressing roller and the fourth pressing roller from top to bottom. Four carbon fiber layers are distributed on the yarn feeding plate. The first carbon fiber layer, the second carbon fiber layer, the third carbon fiber layer and the fourth carbon fiber layer are distributed from top to bottom. The first pressing roller acts on the first carbon fiber layer, the second pressing roller acts on the second carbon fiber layer, the third pressing roller acts on the third carbon fiber layer, and the fourth pressing roller acts on the fourth carbon fiber layer. If the yarn pressing unit 4 includes four layers of yarn pressing rollers and eight layers of carbon fiber are distributed on the yarn threading plate, then one layer of yarn pressing rollers acts on two layers of carbon fiber.

[0046] The number of layers of the pressing roller 41 is greater than the initial number of layers of the pressing roller 41. For example, if the initial number of layers of the pressing roller 41 is four, the number of layers of the pressing roller 41 is six. In this application, the number of layers of the pressing roller 41 is increased. With the number of carbon filaments remaining unchanged, the number of carbon filaments on each pressing roller 41 is reduced, which can increase the carbon filament wetting effect.

[0047] Furthermore, the extrusion unit 5 includes several layers of extrusion rollers 51 distributed vertically, with each pair of extrusion rollers 51 working together to extrude carbon wire. The number of layers of the extrusion roller 51 is less than or equal to the number of carbon fiber layers of the yarn threading plate 2, but greater than the initial number of layers of the extrusion roller 51.

[0048] The gap between each pair of extrusion rollers 51 can be adjusted independently to meet the needs of removing excess adhesive from different layers of carbon wire. This allows for more precise removal of excess adhesive from the surface of the carbon wire, resulting in a more uniform distribution of adhesive and improved final quality of the carbon wire.

[0049] One extrusion roller 51 serves as one layer of extrusion roller 51, and two layers of extrusion roller 51 correspond to at least one layer of carbon fiber. The number of layers of extrusion roller 51 is less than or equal to the number of carbon fiber layers of the yarn threading plate 2. This can reduce the number of extrusion rollers used while ensuring the wetting effect, thereby reducing costs and eliminating the need for one layer of carbon fiber to correspond to one extrusion roller.

[0050] The number of layers of the extrusion roller 51 is greater than the initial number of layers of the extrusion roller 51. For example, if the initial number of layers of the extrusion roller 51 is four, the number of layers of the extrusion roller 51 is six. In this application, the number of layers of the extrusion roller 51 is increased. With the number of carbon wires remaining unchanged, the number of carbon wires between the two extrusion rollers 51 is reduced, which can increase the carbon wire wetting effect and make it easier for the carbon wire joint to pass through the extrusion roller 51, avoiding the phenomenon that the joint is not firm and breaks at the extrusion roller.

[0051] Furthermore, the number of layers of the pressing roller 41 is equal to the number of layers of the extrusion roller, so that the carbon filaments on the two pressing rollers 41 are clamped and squeezed together by the two extrusion rollers, thereby merging the carbon filaments and preparing them for subsequent preforming.

[0052] The yarn threading plate 2 has twelve layers of carbon filaments and twelve carbon filament paths. At the same time, the pressing roller 41 has six layers and the extrusion roller has six layers. This configuration allows the device to adapt well to the impregnation requirements of multi-path and multi-layer carbon filaments, enhancing the versatility and flexibility of the device and meeting the carbon filament impregnation requirements of different production scales and specifications.

[0053] In an embodiment of this utility model, the line connecting the centers of the cross sections of several laminating yarn rollers 41 is arranged to gradually slope upwards from the inlet to the outlet of the impregnation tank 3.

[0054] In this embodiment of the invention, this design makes the movement path of the carbon filament within the impregnation tank 3 more rational. During the impregnation process, as the carbon filament moves within the impregnation tank 3, it gradually penetrates deeper into the adhesive, ensuring that the carbon filament receives uniform and sufficient impregnation at different positions within the impregnation tank 3. This avoids the problem of insufficient or excessive impregnation of some carbon filaments, further improving the quality of carbon filament impregnation.

[0055] The angle of inclination of the line connecting the centers of the cross sections of several lamination yarn rollers is 60 degrees, which can avoid mutual interference between the carbon fiber layers and ensure that the carbon fiber is properly impregnated with resin.

[0056] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A carbon filament impregnation device, characterized in that, include: A carbon wire preheater (1), a yarn threading plate (2), a glue-impregnating tank (3) and an extrusion unit (5) are arranged sequentially along the moving direction of the carbon wire. A yarn pressing unit (4) is provided in the glue-impregnating tank (3). The carbon wire arrangement of the carbon wire preheater (1) is the same as that of the yarn threading plate (2).

2. The carbon filament impregnation device according to claim 1, characterized in that, The number of carbon filament layers and carbon filament paths in the carbon filament preheater (1) are the same as those in the yarn threading plate (2).

3. The carbon filament impregnation device according to claim 2, characterized in that, The number of carbon filament layers in the threading plate (2) is less than the initial number of carbon filament layers in the threading plate (2); The number of carbon filaments in the threading plate (2) is greater than the initial number of carbon filaments in the threading plate (2).

4. The carbon filament impregnation device according to claim 2, characterized in that, The yarn pressing unit (4) includes several layers of yarn pressing rollers (41) distributed vertically. The number of layers of the pressing roller (41) is less than or equal to the number of carbon fiber layers of the threading plate (2), but greater than the initial number of layers of the pressing roller (41).

5. The carbon filament impregnation device according to claim 4, characterized in that, The extrusion unit (5) includes several layers of extrusion rollers (51) distributed vertically, with each pair of extrusion rollers (51) working together to extrude carbon wire; The number of layers of the extrusion roller (51) is less than or equal to the number of carbon fiber layers of the yarn threading plate (2), but greater than the initial number of layers of the extrusion roller (51).

6. The carbon filament impregnation apparatus according to claim 5, characterized in that, The number of layers of the pressing roller (41) is equal to the number of layers of the extrusion roller (51).

7. The carbon filament impregnation apparatus according to claim 6, characterized in that, The initial number of carbon filament layers in the threading plate (2) is eighteen, and the initial number of carbon filament paths is eight; the number of carbon filament layers in the threading plate (2) is twelve, and the number of carbon filament paths is twelve. The initial number of layers of the pressing roller (41) is four, and the initial number of layers of the squeezing roller (51) is four; the number of layers of the pressing roller (41) is six, and the number of layers of the squeezing roller (51) is six.

8. The carbon filament impregnation apparatus according to claim 4, characterized in that, The line connecting the centers of the cross sections of several lamination yarn rollers (41) is arranged to gradually slope upwards from the inlet to the outlet of the impregnation tank (3).

9. The carbon filament impregnation apparatus according to claim 8, characterized in that, The angle of inclination of the line connecting the centers of the cross sections of several laminated yarn rollers (41) is 60 degrees.

10. A production line for carbon fiber pultruded sheets, comprising a preforming device, characterized in that, It also includes the carbon filament impregnation apparatus according to any one of claims 1-9; The carbon filament impregnation device and the preforming device are arranged sequentially along the direction of carbon filament movement.

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