A rolling carbon fiber tow flattening device

Abstract

A rolling carbon fiber tow flattening device includes support plate components on both sides and pressure rollers installed between the support plate components. Sealed deep groove ball bearings are installed at both ends of the pressure rollers. A pressure roller height adjustment component is provided between the support plate components and the deep groove ball bearings at the ends of the pressure rollers. The pressure roller height adjustment component is a U-shaped member. The U-shaped member is fixedly connected to the support plate components to form a U-shaped groove. The opening of the U-shaped groove faces upwards, forming the inlet of the deep groove ball bearings. The two side walls of the U-shaped groove provide lateral constraints on the deep groove ball bearings. A pressure block is provided at the opening of the U-shaped groove. An adjusting thread hole is provided at the bottom of the U-shaped groove, and an adjusting bolt is screwed into the adjusting thread hole. The adjusting bolt passes upwards through the adjusting thread hole to adjust the height of the pressure rollers. The horizontal distance between the two pressure rollers can be precisely adjusted and controlled. This achieves efficient and non-destructive flattening of carbon fiber tows, ensuring stable operation of the production line and optimized product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of carbon fiber processing equipment, and in particular to a rolling carbon fiber bundle flattening device. Background Technology

[0002] In the production process of carbon fiber products, the pre-treatment of carbon fiber tow is crucial. Currently, there are many problems with the flattening of carbon fiber tow in the market. On the one hand, most companies use fixed sliding tow flattening devices. In actual operation, sliding friction between the tow and the flattening device is unavoidable. This easily causes scratches, wear, and other damage to the surface of the carbon fiber tow, destroying the structural integrity of the carbon fiber filaments and seriously affecting the quality of the final carbon fiber products. For example, in carbon fiber composite components used in the aerospace field, if the tow surface is damaged, its mechanical properties and reliability will be significantly reduced. On the other hand, some production lines abandon the flattening device altogether to avoid tow damage. However, this leads to a new problem: the tension of the front-end carbon fiber tow is difficult to distribute evenly, causing an imbalance in the tension control system of the entire production line. Subsequent processing steps such as winding and weaving cannot be carried out accurately, which is also detrimental to product quality assurance and production efficiency. Therefore, it is urgent to develop a device that can effectively flatten carbon fiber tow while avoiding damage to the tow. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by proposing a rolling carbon fiber bundle flattening device that achieves efficient and non-destructive flattening of carbon fiber bundles.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution: a rolling carbon fiber tow flattening device, characterized in that: it includes support plate components on both sides and a pressure roller installed between the support plate components, with sealed deep groove ball bearings at both ends of the pressure roller, and a pressure roller height adjustment component is provided between the support plate components and the deep groove ball bearings at the ends of the pressure roller. The pressure roller height adjustment component is a U-shaped member. The support plate of the U-shaped member is fixedly connected to form a U-shaped groove. The opening of the U-shaped groove faces upward to form the entrance of the deep groove ball bearing. The two side walls of the U-shaped groove form lateral constraints on the deep groove ball bearing. A pressure block is provided at the opening of the U-shaped groove. An adjustment screw hole is provided at the bottom of the U-shaped groove. An adjustment bolt is screwed into the adjustment screw hole. The adjustment bolt passes upward through the adjustment screw hole to adjust the height of the pressure roller.

[0005] The technical problem to be solved by this utility model can also be further achieved by the following technical solution: vertical adjustment elongated holes are opened on both sides of the U-shaped groove, and fixing bolts are fixedly connected to both ends of the pressure block through the adjustment elongated holes to adjust the height of the pressure block.

[0006] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: the side of the pressure block facing the deep groove ball bearing is provided with an arc surface that cooperates with the deep groove ball bearing.

[0007] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: the support plate component and the U-shaped component are connected by bolts and nuts, and the mounting holes on the support plate component are all oblong holes.

[0008] The technical problem to be solved by this utility model can also be further achieved by the following technical solution: two pressure rollers are arranged in parallel between the support plate components on both sides.

[0009] Compared with existing technologies, this invention allows for precise adjustment and control of the horizontal distance between the two pressure rollers. Since the wrap angle affects the subsequent processing performance and product quality of the carbon fiber bundle, the wrap angle is adjusted according to the specific product's process requirements, ensuring that the carbon fibers pass through the device on the same horizontal plane to achieve optimal production results. This enables the entire device to accurately and efficiently press carbon fiber bundles of varying heights onto the same plane, effectively avoiding damage to the carbon fiber bundles and creating stable tension conditions for subsequent production processes, meeting key requirements in carbon fiber product manufacturing. It achieves efficient and non-destructive flattening of carbon fiber bundles, ensuring stable production line operation and optimized product quality. Attached Figure Description

[0010] Figure 1 This is an isometric schematic diagram of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a partial enlarged view of the present invention; Figure 4 This is the isometric view of the U-shaped component. Detailed Implementation

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] A rolling carbon fiber tow flattening device includes support plate components on both sides and a pressure roller installed between the support plate components. Sealed deep groove ball bearings are installed at both ends of the pressure roller. A pressure roller height adjustment component is provided between the support plate components and the deep groove ball bearings at the ends of the pressure roller. The pressure roller height adjustment component is a U-shaped member. The U-shaped member and support plate components are fixedly connected to form a U-shaped groove. The opening of the U-shaped groove faces upwards, forming the entrance for the deep groove ball bearing. The two side walls of the U-shaped groove provide lateral constraints on the deep groove ball bearing. A pressure block is provided at the opening of the U-shaped groove. An adjusting thread hole is provided at the bottom of the U-shaped groove, and an adjusting bolt is screwed into the adjusting thread hole. The adjusting bolt passes upwards through the adjusting thread hole to adjust the height of the pressure roller.

[0013] Vertical adjustment holes are made on both sides of the U-shaped groove. Fixing bolts pass through the adjustment holes and are fixedly connected to both ends of the pressure block to adjust the height of the pressure block.

[0014] The side of the pressure block facing the deep groove ball bearing has an arc surface that mates with the deep groove ball bearing.

[0015] The technical problem to be solved by this utility model can also be further achieved through the following technical solution: the support plate component and the U-shaped component are connected by bolts and nuts, and the mounting holes on the support plate component are all oblong holes.

[0016] As shown in the figure: 1. The support plate component, as the basic support structure of the entire device, is made of carbon steel. The multiple sets of waist-shaped holes on its side support plate are not evenly distributed, but rather optimized according to common carbon fiber tow processing specifications to accommodate a wider range of tow adjustments. The inner walls of the waist-shaped holes are ground and polished to reduce frictional resistance of the connecting parts during adjustment, ensuring smooth horizontal movement of the pressure roller. 2. In the pressure roller height adjustment assembly, 2.1 the bottom of the limit block has a threaded hole, enabling precise height adjustment. 2.2 The bolt allows for easy manual rotation adjustment by the operator; its screw part fits tightly with the threaded hole at the bottom of the limit block, effectively preventing loosening. 2.3 The bearing is a sealed deep groove ball bearing, filled with high-performance grease, ensuring the stability of the pressure roller under high-speed rotation and preventing external dust, fiber debris, and other impurities from entering the bearing and affecting transmission performance. 2.4 The bottom of the pressure block is machined into a concave surface that matches the curvature of the bearing top, increasing the contact area and enhancing pressing stability. 2.5 After the fixing bolts are tightened into the threaded holes at both ends of the limiting block, the limiting block, bearing, pressure roller, and other components form a tight and stable overall structure. 3 The pressure roller surface is chrome-plated to further improve surface smoothness and reduce the coefficient of friction. The two ends of the pressure roller are fixed to the inner ring of the bearing in section 2.3 by interference fit to ensure that there will be no loosening during rotation. Through the meticulous design and coordinated operation of the above components, the rolling carbon fiber tow flattening device of this utility model can accurately and efficiently press carbon fiber tows of different heights onto the same plane, while effectively avoiding damage to the carbon fiber tows, and creating stable tension conditions for subsequent production processes, meeting the key requirements in the production process of carbon fiber products.

[0017] The first step is installation and positioning. The device is precisely placed in the designated position before the yarn feeding machine, taking into full consideration the overall levelness of the device and its coordination with the preceding and following equipment. Special attention should be paid to the orientation, ensuring that the lower end is close to the yarn feeding frame and the higher end is accurately facing the yarn feeding machine. The device is firmly fixed in the corresponding position using the fixing connectors provided with the production line, laying the foundation for stable operation. Next is the yarn tow insertion and initial adjustment. The carbon fiber yarn tow is smoothly passed between the two 3 pressure rollers, and the initial adjustment work begins. The operator manually rotates the 2.2 bolt, gradually moving the pressure rollers, carefully observing the changes in the state of the yarn tow after passing through the pressure rollers. Using the naked eye and simple measuring tools (such as a ruler), the operator judges whether the yarn tow tends to be on the same horizontal plane, and continues to fine-tune until the target is achieved, so that all the carbon fiber yarn tows remain on the same horizontal plane after passing through this device. After adjustment, the nuts attached to the 2.2 bolts are tightened with a wrench or other tools to prevent displacement of the pressure rollers. Next comes the component stabilization operation. The 2.4 pressure block is placed firmly above the bearing in its corresponding position and secured with a suitable tool (such as a screwdriver). This ensures the pressure block effectively holds the bearing in place during subsequent production, preventing the pressure roller from dislodging from its normal operating position in case of abnormalities. Then, the 2.5 fixing bolts are tightened using the same tool and to the specified torque, strengthening the connection stability between the limit block and other components and ensuring the overall stability of the pressure roller height adjustment assembly. Finally, there is the fine-tuning and adaptation stage. When different product requirements necessitate adjusting the wrap angle of the filament bundle, the operator adjusts the bolts on the back of the 2.1 limit block to achieve precise lateral control of the horizontal distance between the two rollers. Since the wrap angle affects the subsequent processing performance and product quality of the filament bundle, the wrap angle is adjusted according to the specific product's process requirements, ensuring the carbon filaments are on the same horizontal plane as the device, to achieve optimal production results. Throughout the production process, operators must regularly inspect the device, checking for loose connections and stable filament bundle flattening effects to ensure continuous and efficient operation.

Claims

1. A rolling carbon fiber tow flattening device, characterized in that: It includes support plate components on both sides and a pressure roller installed between the support plate components. Sealed deep groove ball bearings are installed at both ends of the pressure roller. A pressure roller height adjustment assembly is provided between the support plate components and the deep groove ball bearings at the ends of the pressure roller. The pressure roller height adjustment component is a U-shaped member. The support plate of the U-shaped member is fixedly connected to form a U-shaped groove. The opening of the U-shaped groove faces upward to form the entrance of the deep groove ball bearing. The two side walls of the U-shaped groove form lateral constraints on the deep groove ball bearing. A pressure block is provided at the opening of the U-shaped groove. An adjustment screw hole is provided at the bottom of the U-shaped groove. An adjustment bolt is screwed into the adjustment screw hole. The adjustment bolt passes upward through the adjustment screw hole to adjust the height of the pressure roller.

2. The rolling carbon fiber tow flattening device according to claim 1, characterized in that: Vertical adjustment holes are made on both sides of the U-shaped groove. Fixing bolts pass through the adjustment holes and are fixedly connected to both ends of the pressure block to adjust the height of the pressure block.

3. The rolling carbon fiber tow flattening device according to claim 1, characterized in that: The side of the pressure block facing the deep groove ball bearing has an arc surface that mates with the deep groove ball bearing.

4. The rolling carbon fiber tow flattening device according to claim 1, characterized in that: The support plate component and the U-shaped component are connected by bolts and nuts, and the mounting holes on the support plate component are all oblong holes.

5. The rolling carbon fiber tow flattening device according to claim 1, characterized in that: Two pressure rollers are arranged in parallel between the support plate components on both sides.

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