An automated fiber layup device

Abstract

The utility model discloses a kind of automatic fiber layering devices, including layering structure, mechanical arm, discharging roller, tension adjusting bin, heating device, transmission roller, control device and compaction bonding mechanism, wherein, compaction bonding mechanism includes electric telescopic rod, flexible rotary shaft, the cylindrical connected by sliding block sliding slot, limit frame and wear-resistant skin layer, when working, mechanical arm drives device to move, discharging roller releases fiber band to adjust tension by tension adjusting bin, then by heating device, transmission roller is hauled to mould surface, compaction stage, electric telescopic rod pushes flexible rotary shaft to bend, cylindrical linkage forms camber, limit frame restricts wear-resistant skin layer transverse movement, so that it only deforms along up and down direction. Through the above structure, the device solves the problems such as poor curved surface adaptation, unstable tension control, weak high-temperature adaptability and other problems of traditional layering equipment, realizes high-precision curved surface bonding, dynamic tension adjustment and automatic continuous operation, and is suitable for a variety of fiber materials.

Description

Technical Field

[0001] This utility model relates to the field of fiber layup technology, and in particular to an automated fiber layup device. Background Technology

[0002] In the field of composite material manufacturing, automated fiber layup technology is a core element in ensuring product quality and production efficiency. Traditional layup equipment often uses rigid roller pressing structures, which struggle to achieve uniform pressure distribution when dealing with complex curved surfaces such as aerospace components and wind turbine blades. This can easily lead to defects such as interlayer bubbles and wrinkles, reducing the mechanical properties of the material. Furthermore, the fiber tension adjustment in existing devices relies on manual labor or simple mechanical structures, resulting in slow response and insufficient precision, failing to meet the demands of high-speed automated production. In addition, under high-temperature conditions, some equipment is prone to deformation and failure due to the poor heat resistance of its components, affecting layup stability. Moreover, most equipment has limited functionality and low versatility, requiring repeated design and modification for different materials or curved surfaces, leading to increased production costs. Therefore, it is necessary to develop an automated layup device with adaptive curved surface bonding, precise tension control, and high-temperature adaptability to overcome existing technological bottlenecks and meet the stringent requirements of high-end manufacturing for composite material layup quality and efficiency. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] Therefore, the purpose of this utility model is to provide an automated fiber layup device that can solve the existing problems of curved surface adaptation and equipment versatility limitations.

[0005] To solve the above technical problems, this utility model provides an automated fiber layup device, which adopts the following technical solution: It includes a layup structure, a robotic arm fixedly connected to the upper end of the layup structure, a feeding roller disposed on the inner wall near the upper end of the layup structure, a tension regulating chamber disposed at the lower end of the feeding roller, the rear end of the tension regulating chamber being fixedly connected to the inner wall of the layup structure via a connecting rod, a first slider being slidably connected inside the tension regulating chamber, a U-shaped component being fixedly connected to the outer side of the first slider, a guide wheel being rotatably connected to the inner wall of the U-shaped component via a second rotating shaft, a heating device disposed on the inner wall near the middle of the layup structure, a first rotating shaft being rotatably connected to the inner wall near the bottom of the layup structure, a transmission roller being fixedly connected to the outer surface of the first rotating shaft, an installation plate being fixedly connected to the inner wall near the left bottom of the layup structure, a control device being fixedly connected to the top of the installation plate, and a compaction and bonding mechanism being disposed at the bottom of the installation plate. The compaction and bonding mechanism includes an electric telescopic rod, a fixed rod, a flexible rotating shaft, a cylinder, a fixed plate, a limiting frame, and a wear-resistant leather layer.

[0006] Optionally, the number of the feeding rollers is two and they are symmetrically distributed, and the number of the tension adjustment chambers is two and they correspond one-to-one with the feeding rollers.

[0007] Through the above technical solution, two symmetrical feeding rollers can release multiple sets of fiber belts simultaneously, improving layup efficiency, and the two tension adjustment chambers can respectively adapt to the tension requirements of different fiber belts.

[0008] Optionally, guide rods are symmetrically arranged at the upper end of the heating device.

[0009] Through the above technical solution, the guide rods form a stable guide channel through symmetrical distribution.

[0010] Optionally, a drive motor is fixedly connected to the rear surface of the ply structure, and the output end of the drive motor is fixedly connected to the first rotating shaft.

[0011] The above technical solution allows the drive motor to directly drive the first rotating shaft, ensuring that the speed of the transmission roller is stable and controllable, and the fiber belt conveying speed can be precisely adjusted through the control device.

[0012] Optionally, a spring is provided inside the tension adjustment chamber, and the front end and rear end of the spring are respectively in close contact with the rear surface of the first slider and the rear inner wall of the tension adjustment chamber.

[0013] The above technical solution achieves adaptive tension adjustment through the cooperation of the spring and the first slider.

[0014] Optionally, the bottom of the mounting plate is symmetrically provided with electric telescopic rods, and the bottom of each of the two electric telescopic rods is fixedly connected with a fixing rod, and the limiting frame is located outside the fixing rod.

[0015] The above technical solution ensures that the fixed rods are subjected to balanced forces, avoiding tilting of the mechanism caused by unilateral forces.

[0016] Optionally, the inner wall of the fixed rod is rotatably connected to the flexible rotating shaft, the outer surface of the flexible rotating shaft is rotatably connected to the fixed disk, the outer surface of the fixed disk is fixedly connected to the wear-resistant skin layer, there are two fixed disks symmetrically distributed on both sides of the wear-resistant skin layer, the outer surface of the flexible rotating shaft near the center is rotatably connected to a cylinder, there are multiple cylinders radially distributed, and the cylinders are located between the two fixed disks.

[0017] The above technical solution allows the fixed rod to be rotated with the flexible rotating shaft, enabling the shaft to bend freely. Multiple radially distributed cylinders can adjust their angles as the shaft bends through rotational connection with the flexible rotating shaft.

[0018] Optionally, a second slider is fixedly connected to both sides of the cylinder near the upper end, and a sliding groove is provided on both sides of the cylinder near the lower end. The cylinders are placed in pairs, and the second slider fixedly connected to the outer surface of one side of the cylinder is slidably connected to the sliding groove provided on the outer surface of the other side of the cylinder. The inner side of the limiting frame is in contact with the wear-resistant leather layer.

[0019] The above technical solution ensures that the sliding connection between the cylinders allows for synchronous adjustment of the angle during bending, forming a gapless arc surface. The contact between the limiting frame and the wear-resistant skin layer restricts its lateral deformation, allowing only elastic deformation in the vertical direction.

[0020] In summary, this utility model has at least one of the following beneficial effects: 1. High-precision curved surface adaptation: The flexible rotating shaft and the slider and groove linkage structure of the cylinder, combined with the limiting frame to limit the left and right of the wear-resistant skin, can adaptively fit any curved surface. Compared with the traditional rigid roller pressing device, it can accurately control the uniform transmission of compaction pressure, effectively avoid defects such as layup bubbles and wrinkles caused by irregular curved surfaces, and greatly improve the layup quality.

[0021] 2. High-efficiency dynamic tension adjustment: The combination of springs and guide wheels in the tension adjustment chamber can automatically adjust the fiber belt tension in real time, ensuring that the belt is always in a flat and taut state. This eliminates the need for frequent manual intervention, significantly reduces downtime for debugging, and greatly improves layup efficiency, meeting the needs of automated continuous production. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the layup device of this utility model; Figure 3 This is a schematic diagram of the tension adjustment structure of this utility model; Figure 4 This is a schematic diagram of the compaction and bonding roller of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Layered structure; 2. Robotic arm; 3. Feeding roller; 4. Connecting rod; 5. Tension adjustment chamber; 6. Guide rod; 7. Heating device; 8. Control device; 9. Mounting plate; 10. Transmission roller; 11. First rotating shaft; 12. Drive motor; 13. Spring; 14. First slider; 15. U-shaped component; 16. Second rotating shaft; 17. Guide wheel; 18. Electric telescopic rod; 19. Fixed rod; 20. Flexible rotating shaft; 21. Cylinder; 22. Second slider; 23. Slide groove; 24. Fixed plate; 25. Wear-resistant skin layer; 26. Limiting frame. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4This utility model discloses an automated fiber layup device, which includes a layup structure 1. A robotic arm 2 is fixedly connected to the upper end of the layup structure 1. A feeding roller 3 is provided on the inner wall of the layup structure 1 near the upper end. A tension regulating chamber 5 is provided at the lower end of the feeding roller 3. The rear end of the tension regulating chamber 5 is fixedly connected to the inner wall of the layup structure 1 via a connecting rod 4. A first slider 14 is slidably connected inside the tension regulating chamber 5. A U-shaped part 15 is fixedly connected to the outer side of the first slider 14. A guide wheel 17 is rotatably connected to the inner wall of the U-shaped part 15 via a second rotating shaft 16. A heating device 7 is provided on the inner wall of the layup structure 1 near the middle. A first rotating shaft 11 is rotatably connected to the inner wall of the layup structure 1 near the bottom. A transmission roller 10 is fixedly connected to the outer surface of the first rotating shaft 11. An installation plate 9 is fixedly connected to the inner wall of the layup structure 1 near the bottom left side. A control device 8 is fixedly connected to the top of the installation plate 9. A compaction and bonding mechanism is provided at the bottom of the installation plate 9.

[0027] There are two feeding rollers 3, which are symmetrically distributed. There are two tension regulating chambers 5, which correspond one-to-one with the feeding rollers 3. The upper end of the heating device 7 is symmetrically provided with guide rods 6. The rear surface of the layup structure 1 is fixedly connected to a drive motor 12, and the output end of the drive motor 12 is fixedly connected to the first rotating shaft 11.

[0028] The compaction and bonding mechanism includes an electric telescopic rod 18, a fixed rod 19, a flexible rotating shaft 20, a cylinder 21, a fixed plate 24, a limiting frame 26, and a wear-resistant leather layer 25.

[0029] A spring 13 is installed inside the tension adjustment chamber 5. The front and rear ends of the spring 13 are tightly fitted to the rear surface of the first slider 14 and the rear inner wall of the tension adjustment chamber 5, respectively. Electric telescopic rods 18 are symmetrically arranged at the bottom of the mounting plate 9. Fixed rods 19 are fixedly connected to the bottom of each of the two electric telescopic rods 18. A limiting frame 26 is located outside the fixed rods 19. The inner wall of the fixed rods 19 is rotatably connected to the flexible rotating shaft 20. The outer surface of the flexible rotating shaft 20 is rotatably connected to the fixed plate 24. The outer surface of the fixed plate 24 is fixedly connected to the wear-resistant leather layer 25. There are two fixed plates 24. Symmetrically distributed on both sides of the wear-resistant skin layer 25, the outer surface of the flexible rotating shaft 20 near the center is rotatably connected to the cylinder 21. There are multiple cylinders 21 and they are radially distributed. The cylinders 21 are located between two fixed disks 24. The upper ends of both sides of the cylinder 21 are fixedly connected to the second slider 22. The lower ends of both sides of the cylinder 21 are provided with the sliding groove 23. The cylinders 21 are placed in pairs. The second slider 22 fixedly connected to the outer surface of one cylinder 21 is slidably connected to the sliding groove 23 provided on the outer surface of the other cylinder 21. The inner side of the limiting frame 26 is in contact with the wear-resistant skin layer 25.

[0030] Working principle: The robotic arm 2 drives the layup structure 1 to move along the curved surface of the mold. The two symmetrical feeding rollers 3 at the upper end of the layup structure 1 release the pre-impregnated fiber strip. The fiber strip enters the tension adjustment chamber 5 downward. The tension adjustment chamber 5 is fixed to the inner wall of the layup structure 1 through the connecting rod 4. The spring 13 in the chamber pushes the first slider 14 to slide left and right, which drives the U-shaped part 15 on the outside of the slider and the guide wheel 17 connected through the second rotating shaft 16 to move synchronously, dynamically compensating the tension of the fiber strip and ensuring that the strip is flat and taut.

[0031] After the fiber belt passes through the guide rod 6 at the upper end of the heating device 7 and is constrained, it enters the interior of the heating device 7 and is heated to the process temperature to soften the resin. Then, the transmission roller 10 at the bottom of the layup structure 1 is driven by the drive motor 12 to pull the heated fiber belt to the mold surface. The control device 8 at the top of the mounting plate 9 collects tension and temperature data in real time and coordinates the linkage of various mechanisms.

[0032] During the compaction stage, the electric telescopic rod 18 at the bottom of the mounting plate 9 extends downward, pushing the fixed rod 19 and the internally rotatably connected flexible rotating shaft 20 closer to the curved surface. The flexible rotating shaft 20 is a titanium alloy bellows structure. With low axial stiffness, it bends with the curved surface, and high radial stiffness suppresses lateral displacement. Multiple cylinders 21 rotatably connected to its outer surface slide with the grooves 23 of the adjacent cylinders 21 through the second sliders 22 on both sides to form a continuous arc surface.

[0033] The wear-resistant skin layer 25 on the outer side of the cylinder 21 is positioned by the two fixed plates 24. The inner side of the limiting frame 26 on the outer side of the fixing rod 19 contacts the wear-resistant skin layer 25, constraining its left and right offset, and only allowing elastic deformation along the curved surface in the up and down direction. The pressure provided by the electric telescopic rod 18 is transmitted to the fiber belt through the cylinder 21 and the wear-resistant skin layer 25 to ensure the fit gap.

[0034] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An automated fiber layup device, comprising a layup structure (1), characterized in that: A robotic arm (2) is fixedly connected to the upper end of the ply structure (1). A feeding roller (3) is provided on the inner wall of the ply structure (1) near the upper end. A tension regulating chamber (5) is provided at the lower end of the feeding roller (3). The rear end of the tension regulating chamber (5) is fixedly connected to the inner wall of the ply structure (1) through a connecting rod (4). A first slider (14) is slidably connected inside the tension regulating chamber (5). A U-shaped part (15) is fixedly connected to the outer side of the first slider (14). The inner wall of the U-shaped part (15) is connected to a second... A guide wheel (17) is rotatably connected to a rotating shaft (16). A heating device (7) is provided on the inner wall of the ply structure (1) near the middle. A first rotating shaft (11) is rotatably connected to the inner wall of the ply structure (1) near the bottom. A transmission roller (10) is fixedly connected to the outer surface of the first rotating shaft (11). An installation plate (9) is fixedly connected to the inside of the ply structure (1) near the bottom left side. A control device (8) is fixedly connected to the top of the installation plate (9). A compaction and bonding mechanism is provided at the bottom of the installation plate (9). The compaction and bonding mechanism includes an electric telescopic rod (18), a fixed rod (19), a flexible rotating shaft (20), a cylinder (21), a fixed plate (24), a limiting frame (26), and a wear-resistant skin layer (25).

2. The automated fiber layup device according to claim 1, characterized in that: The number of the feeding rollers (3) is two and they are symmetrically distributed. The number of the tension regulating chambers (5) is two and they correspond one-to-one with the feeding rollers (3).

3. The automated fiber layup device according to claim 1, characterized in that: The upper end of the heating device (7) is symmetrically provided with guide rods (6).

4. The automated fiber layup device according to claim 1, characterized in that: A drive motor (12) is fixedly connected to the rear surface of the layered structure (1), and the output end of the drive motor (12) is fixedly connected to the first rotating shaft (11).

5. The automated fiber layup device according to claim 1, characterized in that: The tension adjustment chamber (5) is equipped with a spring (13), and the front end and rear end of the spring (13) are in close contact with the rear surface of the first slider (14) and the rear inner wall of the tension adjustment chamber (5), respectively.

6. The automated fiber layup device according to claim 1, characterized in that: The bottom of the mounting plate (9) is symmetrically provided with electric telescopic rods (18), and the bottom of each of the two electric telescopic rods (18) is fixedly connected with a fixing rod (19). The limiting frame (26) is located outside the fixing rod (19).

7. The automated fiber layup device according to claim 1, characterized in that: The inner wall of the fixed rod (19) is rotatably connected to the flexible rotating shaft (20), the outer surface of the flexible rotating shaft (20) is rotatably connected to the fixed disk (24), the outer surface of the fixed disk (24) is fixedly connected to the wear-resistant skin layer (25), there are two fixed disks (24) and they are symmetrically distributed on both sides of the wear-resistant skin layer (25), the outer surface of the flexible rotating shaft (20) near the center is rotatably connected to the cylinder (21), there are multiple cylinders (21) and they are radially distributed, the cylinders (21) are located between the two fixed disks (24).

8. The automated fiber layup device according to claim 1, characterized in that: The cylinder (21) has a second slider (22) fixedly connected to both sides near the upper end, and a groove (23) is provided on both sides near the lower end. The cylinders (21) are placed in pairs, and the second slider (22) fixedly connected to the outer surface of one side of the cylinder (21) is slidably connected to the groove (23) provided on the outer surface of the other side of the cylinder (21). The inner side of the limiting frame (26) is in contact with the wear-resistant skin layer (25).

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