Carbon fiber prepreg filament traction and flattening device

Abstract

The utility model relates to the technical field of manufacturing of carbon fiber prepreg yarn production equipment, in particular to a carbon fiber prepreg yarn traction and flattening device which can be used for carrying out further yarn spreading treatment on impregnated and dried prepreg yarn so as to obtain better thickness, flatness, width and gluing uniformity. The traction flattening device is provided with a traction flattening supporting plate, a fixed roller, an adjustable roller, a height adjusting assembly and a roller driving assembly, the fixed roller is fixedly installed on the traction flattening supporting plate through a wheel shaft, the adjustable roller is connected with the traction flattening supporting plate through the height adjusting assembly and located above the fixed roller, and the adjustable roller is driven by the roller driving assembly to rotate. Compared with the prior art, the device has the advantages that after gum dipping and drying treatment, gum-dipped tows can be further flattened through the traction flattening assembly, so that the gum dipping uniformity of fibers in the gum-dipped tows is improved, and the quality of finished products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber prepreg production equipment manufacturing, and specifically is a carbon fiber prepreg pulling and flattening device capable of further spreading the prepreg after being dipped in glue and dried, thereby obtaining the carbon fiber prepreg with better thickness, flatness, width and glue coating uniformity. Background Art

[0002] Carbon fiber prepreg is the intermediate material for manufacturing composite materials and their products. The uniformity and stability of its quality are important links to ensure the quality and reliability of composite materials and their products. Resin-based composite materials (RMC) have high specific strength and specific stiffness, good design performance, and can effectively reduce the structural mass of spacecraft. They are the development focus of aerospace materials today and are gradually replacing traditional metal materials.

[0003] The preparation of carbon fiber prepreg mainly includes the following steps: unwinding and flattening of carbon fiber tows, combing, yarn spreading and removal of sizing agent, gluing, dipping, cooling and winding. The carbon fiber before being made into prepreg is in the form of tows, and each tow contains several K or even dozens of K (1K is 1 thousand) of monofilaments. Especially for large tows of carbon fiber, when weaving and producing prepreg, if the tow cannot be fully flattened, not only will the fabric be relatively thick, the mechanical properties will have a large deviation, especially the draping performance is very poor, so that the quality of the subsequent parts cannot be well guaranteed, and when making prepreg, the resin cannot fully penetrate the fiber, resulting in poor dry yarn, stripping and other defects, which seriously restricts the application of carbon fiber yarn in high-end fields. Tests on carbon fiber fabrics show that the thinner the fabric, the smaller the mass per unit area, the smaller the deviation of its physical properties, and the better the draping operability. If it can be further widened, the silk can be thinned and the strength can be improved. At the same time, the unfolding of the tow can make the combination of fiber and resin better, which can greatly improve the performance of composite materials.

[0004] In addition, the unfolding state of the tow after the dipping treatment will change, especially under the viscosity of the resin, it will tend to agglomerate, resulting in an increase in the overall thickness of the tow, which is not conducive to the uniform distribution of the resin on the surface of the tow. At present, there is no effective means to deal with the agglomeration effect of the tow before dipping and winding, resulting in unsatisfactory thickness and dipping uniformity of the tow. The dipping amount of continuous carbon fiber has a great influence on the product quality. After the existing carbon fiber tow is dipped in glue, the tow has a deviation in dipping uniformity and a large amount of glue, resulting in the weight of the subsequent finished product not meeting the standard. Summary of the invention

[0005] In view of the shortcomings and deficiencies in the prior art, the utility model proposes a carbon fiber prepreg pulling and flattening device that can further spread the prepreg after dipping and drying, thereby obtaining a better thickness, flatness and glue coating uniformity.

[0006] The utility model achieves this through the following measures:

[0007] A carbon fiber prepreg pulling and flattening device, characterized in that it is provided with a pulling and flattening support plate, a fixed roller, an adjustable roller, a height adjustment assembly, and a roller drive assembly, wherein the fixed roller is fixed on the pulling and flattening support plate via a wheel axle, the adjustable roller is connected to the pulling and flattening support plate via the height adjustment assembly and is located above the fixed roller, and the adjustable roller is driven to rotate via the roller drive assembly.

[0008] The height adjustment assembly of the utility model includes a vertical slide rail, a slider and an adjustment drive component. The slider cooperates with the vertical slide rail. An adjustable roller fixing plate is provided on the slider. The adjustable roller is mounted on the adjustable roller fixing plate. The vertical slide rail is arranged on a pulling and flattening support plate. The adjustment drive component adopts a cylinder. The cylinder pulls the slider to move along the vertical slide rail, thereby driving the adjustable roller to move closer to or away from the fixed roller.

[0009] The roller driving assembly of the utility model comprises a driving motor, a driving gear, a first transmission gear, a second transmission gear and a universal joint, wherein the axle of the adjustable roller is connected to the axle of the second transmission gear via the universal joint, the second transmission gear is meshed with the first transmission gear, the first transmission gear is meshed with the driving gear, and the driving gear is mounted on the output shaft of the driving motor.

[0010] The adjustable roller and the fixed roller of the utility model adopt rubber wheel bodies of equal diameters and are used for pulling and flattening the carbon fiber prepreg filament bundles.

[0011] When the utility model is working, the filament bundle after being dipped in glue and dried is fed in from the upper side of the adjustable roller located above the fixed roller, and is further fed in between the adjustable roller and the fixed roller along the S-shape. At this time, the adjustable roller is driven to be closer to the fixed roller through the adjustment motor in the height adjustment component, so that the adjustable roller is pressed down and contacts the fixed roller, and the prepreg located between the adjustable roller and the fixed roller is squeezed, so that the prepreg after being dipped in glue is further flattened, and the yarn is further unfolded, so that the uniformity of the dip in glue of the prepreg is improved, the thickness of the prepreg is reduced, and the width of the prepreg is expanded. At the same time, the tension of the prepreg during winding can be adjusted, and the winding efficiency is improved.

[0012] Compared with the prior art, the utility model can further flatten the dipped silk bundle by pulling the flattening component after the dipped silk bundle is treated with glue and dried, so that the dip uniformity of the fibers in the dipped silk bundle is improved and the quality of the finished product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a structural schematic diagram of the utility model.

[0014] Attached Figure 2It is another schematic diagram of the structure of the utility model.

[0015] Figure numerals: pulling and flattening support plate 1, fixed roller 2, adjustable roller 3, adjustable roller fixing plate 4, adjustment motor 5, cylinder 6, driving motor 7, motor fixing seat 8. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example

[0017] As attached Figure 1 And attached Figure 2 As shown, this example proposes a carbon fiber prepreg pulling and flattening device, which is provided with a pulling and flattening support plate 1, a fixed roller 2, an adjustable roller 3, a height adjustment component, and a roller driving component, wherein the fixed roller is fixed on the pulling and flattening support plate 1 via a wheel axle, the adjustable roller 3 is connected to the pulling and flattening support plate 1 via the height adjustment component, and is located above the fixed roller 2, and the adjustable roller 3 is driven to rotate via the roller driving component;

[0018] The height adjustment assembly in this example includes a vertical slide rail, a slider and an adjustment drive component. The slider cooperates with the vertical slide rail. An adjustable roller fixing plate 4 is provided on the slider. The adjustable roller 3 is installed on the adjustable roller fixing plate 4. The vertical slide rail is arranged on the pulling and flattening support plate 1. The adjustment drive component adopts a cylinder 6. The cylinder 6 pulls the slider to move along the vertical slide rail, thereby driving the adjustable roller 3 to approach or move away from the fixed roller 2. In this example, the adjustment motor 5 in the adjustment drive component is installed on the pulling and flattening support plate 1 via a motor fixing seat 8. The cylinder 6 is connected to the adjustment motor 5;

[0019] As attached Figure 2 As shown, the roller driving assembly in this example includes a driving motor 7, a driving gear, a first transmission gear, a second transmission gear, and a universal joint, wherein the axle of the adjustable roller 3 is connected to the axle of the second transmission gear via a universal joint, the second transmission gear is meshed with the first transmission gear, the first transmission gear is meshed with the driving gear, and the driving gear is mounted on the output shaft of the driving motor; the adjustable roller 3 and the fixed roller 2 use rubber wheels of equal diameter to pull and flatten the carbon fiber prepreg tows.

[0020] During operation, the filament bundle after dipping and drying is fed in from the upper side of the adjustable roller located above the fixed roller, and is further fed in between the adjustable roller and the fixed roller along the S-shape. At this time, the adjustable roller is driven closer to the fixed roller through the adjustment motor in the height adjustment assembly, so that the adjustable roller is pressed down and contacts the fixed roller, thereby squeezing the prepreg between the adjustable roller and the fixed roller, so that the prepreg after dipping is further flattened, the yarn is further unfolded, the uniformity of the dipping of the prepreg is improved, the thickness of the prepreg is reduced, the width of the prepreg is expanded, and at the same time, the tension of the prepreg during winding can be adjusted to improve the winding efficiency.

[0021] Compared with the prior art, the utility model can further flatten the dipped silk bundle by pulling the flattening component after the dipped silk bundle is treated with glue and dried, so that the dip uniformity of the fibers in the dipped silk bundle is improved and the quality of the finished product is guaranteed.

Claims

1. A carbon fiber prepreg pulling and flattening device, characterized in that: It is provided with a pulling and flattening support plate, a fixed roller, an adjustable roller, a height adjustment assembly, and a roller driving assembly, wherein the fixed roller is fixed on the pulling and flattening support plate via a wheel axle, the adjustable roller is connected to the pulling and flattening support plate via the height adjustment assembly and is located above the fixed roller, and the adjustable roller is driven to rotate via the roller driving assembly.

2. A carbon fiber prepreg pulling and flattening device according to claim 1, characterized in that: The height adjustment assembly includes a vertical slide rail, a slider and an adjustment drive component. The slider cooperates with the vertical slide rail. An adjustable roller fixing plate is provided on the slider. The adjustable roller is installed on the adjustable roller fixing plate. The vertical slide rail is set on a pulling and flattening support plate. The adjustment drive component adopts a cylinder. The cylinder pulls the slider to move along the vertical slide rail, driving the adjustable roller to move closer to or away from the fixed roller.

3. The carbon fiber prepreg pulling and flattening device according to claim 1, characterized in that: The roller drive assembly includes a driving motor, a driving gear, a first transmission gear, a second transmission gear, and a universal joint, wherein the axle of the adjustable roller is connected to the axle of the second transmission gear via the universal joint, the second transmission gear is meshed with the first transmission gear, the first transmission gear is meshed with the driving gear, and the driving gear is installed on the output shaft of the driving motor.

4. The carbon fiber prepreg pulling and flattening device according to claim 1, characterized in that: The adjustable roller and the fixed roller adopt rubber wheel bodies with equal diameters.

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