Composite ring-type fixed hard curtain and manufacturing method thereof

Abstract

The application provides a composite annular fixed hard curtain and a manufacturing method thereof, and belongs to the technical field of material forming. The application solves the problems of complex process, large product weight, difficult installation, low durability, poor corrosion resistance and high maintenance cost. The application comprises a hard curtain main body, a metal base, a support truss and a quick connecting device. The hard curtain main body is arc-shaped. The back of the hard curtain main body is connected with the support truss. The bottom of the hard curtain main body is connected with the metal base. The bottom of the support truss is connected with the metal base. The hard curtain main body comprises a plurality of composite material split parts with equal areas and arcs. The composite material split parts are connected through flanges and the quick connecting device. The support truss comprises a plurality of composite material rectangular tubes and a plurality of metal joints. Two composite material rectangular tubes are connected through a metal joint. The application is mainly used for the installation and manufacturing of the annular fixed hard curtain.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material forming, and particularly relates to a composite annular fixed hard curtain and a manufacturing method thereof. BACKGROUND

[0002] The annular fixed hard curtain usually has a large-curvature bending shape. The annular fixed hard curtain is usually applied to create a complete virtual reality environment, creating an immersive effect, so that the participants are in a completely new visual image world. The annular fixed hard curtain is mainly used in indoor display, outdoor display, control room and strategic center, and can be used for monitoring, simulation, coordination and management of a large number of complex tasks and data. For example, in large exhibitions, the annular fixed hard curtain screen is usually used to present panoramic maps, virtual reality and multimedia education demonstrations, etc. Its application scenarios are wide, and indoor scenarios include science museums, observatories, earthquake bureaus, space agencies, schools, museums, exhibition halls, etc. Outdoor scenarios include tourist attractions, amusement parks, outdoor exhibition halls, etc.

[0003] In the prior art, the annular fixed hard curtain usually adopts a metal curtain. The metal annular fixed hard curtain is divided into a metal hard curtain and a metal soft curtain. The projection screen made of this material has the characteristics of salt mist resistance, corrosion resistance and pollution resistance. The picture effect of the metal hard curtain is better than that of the soft curtain. However, the annular fixed hard curtain in the prior art is usually a whole metal hard curtain, which cannot be curled and deformed, and needs to be installed on the wall by using a hanging rack. Moreover, the hanging rack cannot be adjusted or disassembled. The annular fixed hard curtain is usually a whole body, which cannot be locally repaired or replaced. Once damaged, the whole curtain needs to be replaced. This design makes the hard curtain more stable during installation and use, but the manufacturing process is complex, the product is heavy, transportation and installation are difficult, the durability is low, the corrosion resistance is poor, and the maintenance cost is high. SUMMARY

[0004] Therefore, the present application aims to provide a composite annular fixed hard curtain and a manufacturing method thereof, so as to solve the problems of complex process, heavy product, difficult transportation and installation, low durability, poor corrosion resistance and high maintenance cost.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a composite annular fixed hard curtain, which includes a ring curtain body, a metal base and a support truss, wherein the ring curtain body is arc-shaped, the back of the ring curtain body is connected to the support truss, the bottom of the ring curtain body is connected to the metal base, and the bottom of the support truss is connected to the metal base, the ring curtain body includes a plurality of composite material petals with equal area and curvature, and the plurality of composite material petals are connected by flanges and quick connection devices on all sides, the support truss includes a plurality of composite material rectangular tubes and a plurality of metal joints, and every two composite material rectangular tubes are connected by a metal joint, the composite material petals and the composite material rectangular tubes are both made of resin-based fiber composite materials, and the curved surface area of ​​the composite material petals is less than or equal to 1.2m 2 , weight is less than or equal to 15Kg.

[0006] Furthermore, the back of the annular curtain body is connected to the support truss by bolts, the bottom of the annular curtain body is connected to the metal base by bolts, metal embedded parts are arranged in the composite rectangular tube, and the support truss is connected to the metal base through the metal embedded parts arranged in the composite rectangular tube.

[0007] Furthermore, the metal base is formed by welding a metal tube and a metal plate, and the metal base is an arc-shaped structure.

[0008] Furthermore, the four-sided flange is arranged around the outside of the composite material petal, and the quick connection device includes a locking body and a cam sleeve. The locking body is arranged on one side of the four-sided flange, and the cam sleeve is arranged on the other side of the four-sided flange. The locking body and the cam sleeve are connected in a cooperative manner.

[0009] Furthermore, the composite material is divided into epoxy resin-fiber composite materials, and the fibers are either glass fibers or carbon fibers.

[0010] Furthermore, resin is applied to gaps between the plurality of composite material petals, resin is applied to mounting surfaces of the plurality of composite material rectangular tubes, and resin is applied to locations where the support truss and the metal base are connected via bolts.

[0011] A method for manufacturing a composite material annular fixed hard curtain, specifically comprising the following steps:

[0012] S1: manufacturing composite material petals, wherein the composite material petals are formed by placing prepreg on a forming mold using an integrated forming technology;

[0013] S2: manufacturing a composite rectangular tube, wherein the composite rectangular tube is formed by a pultrusion process;

[0014] S3: The composite material is split into four parts and flanges are installed around them. Quick connection devices are installed on both sides of the flanges.

[0015] S4: installing metal embedded parts in the composite material rectangular pipe, and connecting the composite material rectangular pipe through metal joints and bolts to form a support truss;

[0016] S5: connecting the support truss with the metal base through the metal embedded parts in the composite material rectangular pipe;

[0017] S6: connecting a plurality of composite material segments to the support truss in order from low to high through bolts, and connecting the plurality of composite material segments through flanges and quick connection devices to form a ring curtain body;

[0018] S7: connecting the ring curtain body bottom to the metal base through bolts, locking the quick connection device, and completing the installation.

[0019] Further, a manufacturing method of a composite material ring-shaped fixed hard curtain, the forming mold is used for processing composite material segments, the forming mold comprises a mold upper cover and a bottom film, the bottom of the mold upper cover is arc-shaped, the upper part of the bottom film is arc-shaped, the arc of the bottom of the mold upper cover corresponds to the arc of the upper part of the bottom film, and S1 specifically comprises the following steps:

[0020] S11: uniformly applying release agent to the surface of the forming mold, laying the prepreg on the upper surface of the bottom film, and completely adhering the prepreg to the surface of the forming mold;

[0021] S12: after the prepreg laying is completed, trimming the excess part, placing the mold upper cover above the prepreg and the bottom film, pressing the upper part of the mold upper cover with a hot press, keeping the pressing state until the product is cured and formed, and demolding after forming;

[0022] S13: polishing the surface of the blank after demolding, and spraying paint.

[0023] A manufacturing method of a composite material ring-shaped fixed hard curtain, S2 specifically comprises the following steps:

[0024] S21: preheating the pultrusion machine, sequentially fixing the yarn guide plate, the preforming plate, the glue injection box, the glue scraping plate and the rectangular pipe forming mold on the operation table of the pultrusion machine, installing the fiber bundle yarn on the yarn rack, and uniformly passing the sand head into the holes of the yarn guide plate;

[0025] S22: configuring and stirring glue solution, pouring the stirred glue solution into the glue injection box, and making the glue solution soak the fiber bundle yarn;

[0026] S23: setting the temperature of the rectangular pipe forming mold, then heating the mold, starting the pultrusion machine and the traction device after reaching the predetermined temperature;

[0027] S24: The fiber bundle yarn passes through the hole of the yarn guide plate, and then passes through the preforming plate, the glue injection box, the scraper plate and the rectangular forming mold in sequence, thereby obtaining a composite material rectangular tube.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. In the present invention, the composite material annular fixed hard curtain has a simple structure. The main body of the annular curtain is connected by petals of equal area. The petals are molded, and no secondary processing is required. The molding process is simple, which solves the problem of complex processing technology of annular fixed hard curtains in the prior art.

[0030] 2. In the present invention, the petals of the ring screen body are made of a resin-based fiber composite material, wherein the resin base is a heat-resistant epoxy resin, which improves the corrosion resistance of the ring screen body. It is suitable for indoor and outdoor use and various complex environments. The temperature range can be between -55°C and +70°C, and it can be used outdoors for a long time. The surface of the ring screen body does not need to be coated with an anti-corrosion coating, which reduces maintenance costs during use and later. This solves the problems of high cost, low durability and poor corrosion resistance of the existing annular fixed hard screen.

[0031] 3. The main body of the circular curtain in the present invention is formed by connecting petals of equal area to form a whole. The weight of a single petal is less than 15K15. The supporting trusses are connected by composite materials and metal joints, and the connection method is adhesive and screw connection. The on-site construction process is simple, which can effectively reduce the difficulty of operation, the number of operators and construction time, and the labor and equipment costs. It solves the problem of inconvenient transportation of the existing circular fixed hard curtain.

[0032] 4. The composite rectangular tubes in the ring curtain body and supporting trusses of the present invention are all made of resin-based fiber composite materials. By selecting different fiber materials, different product requirements for weight, strength, cost, etc. can be met. By selecting resin-based fiber composite materials, the overall weight of the ring-shaped fixed hard curtain is reduced and can meet the usage requirements;

[0033] 5. The annular fixed hard curtain of the present invention adopts a split structure, which can be quickly installed and fixed on site, saving installation time. The cost of materials, installation, transportation and after-sales maintenance is much lower than that of metal structure hard curtain, thus reducing costs and increasing efficiency.

[0034] 6. The annular fixed hard screen of the present invention can be manufactured according to different sizes, indoor or outdoor usage scenarios and installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of the shaft side structure of a composite material ring type fixed hard curtain according to the present application;

[0037] Figure 2 A schematic diagram of the back structure of a composite material ring type fixed hard curtain according to the present application;

[0038] Figure 3 A schematic diagram of the front structure of a composite material ring type fixed hard curtain according to the present application;

[0039] Figure 4 A schematic diagram of the connection structure of a composite material segment and a supporting truss of a composite material ring type fixed hard curtain according to the present application;

[0040] Figure 5 A schematic diagram of the local structure of the connection between a plurality of composite material segments of a composite material ring type fixed hard curtain according to the present application;

[0041] Figure 6 A schematic diagram of the local structure of the connection between a composite material segment and a supporting truss of a composite material ring type fixed hard curtain according to the present application;

[0042] Figure 7 A schematic diagram of the local structure of the connection between a supporting truss and a metal base of a composite material ring type fixed hard curtain according to the present application;

[0043] Figure 8 A flash photo of a forming mold of a composite material segment of a composite material ring type fixed hard curtain according to the present application;

[0044] Figure 9 A schematic diagram of the structure of a pultrusion process forming of a composite material rectangular tube of a composite material ring type fixed hard curtain according to the present application;

[0045] Figure 10 A manufacturing flowchart of a composite material ring type fixed hard curtain according to the present application.

[0046] In the drawings:

[0047] 1. composite material segment; 2. supporting truss; 3. metal base; 4. metal joint; 5. lock body; 6. cam sleeve; 7. metal embedded part; 8. peripheral flange; 9. mold upper cover; 10. bottom film; 11. yarn guide plate; 12. preforming plate; 13. glue assisting box; 14. glue scraping plate; 15. composite material rectangular tube forming mold. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0049] See also Figure 1-6 This embodiment describes a composite annular fixed hard curtain, which includes a curtain body, a metal base 3 and a support truss 2. The curtain body is arc-shaped, and the arc of the curtain body is formed by connecting a plurality of composite petals 1 with curvature. The back of the curtain body is connected to the support truss 2, and the support truss 2 is used to support the curtain body to keep it vertical. The bottom of the curtain body is connected to the metal base 3, and the bottom of the support truss 2 is connected to the metal base 3. The metal base 3 is used to ensure structural stability. The curtain body includes a plurality of composite petals 1 with equal areas and curvatures, and a plurality of composite petals 1 are connected to the metal base 3. The petals 1 are connected by flanges 8 around them and quick-connect devices. The flanges 8 around them are arranged around the composite petals 1 and are used to connect two composite petals 1. The supporting truss 2 includes a plurality of composite rectangular tubes and a plurality of metal joints 4. Every two composite rectangular tubes are connected by a metal joint 4. The joints are reinforced by screw connection and adhesive bonding. The composite petals and composite rectangular tubes are both made of resin-based fiber composite materials. The selection of resin-based fiber composite materials reduces the overall weight of the annular fixed hard curtain. The curved surface area of ​​the composite petal 1 is less than or equal to 1.2m 2 , the weight is less than or equal to 15Kg. By decomposing the ring screen body into composite material petals 1, the ring-shaped fixed hard screen is easier to transport, solving the problem of occupying a large space during transportation.

[0050] In the present invention, a plurality of composite material petals 1 of equal area are used to form an annular curtain body through four-sided flanges 8 and a quick connection device. The four-sided flanges 8 are embedded in the composite material petals 1, and the quick connection device is connected to the four-sided flanges 8 to connect the two composite material petals 1. The four-sided flanges 8 are used to provide a connection and fixing surface for the quick connection device. The support truss 2 is formed by splicing a plurality of composite material rectangular tubes through metal joints 4, and is reinforced with screws and adhesives at the connection. The support truss 2 is used to support and install an annular fixed hard curtain. The back of the annular curtain body is connected to the support truss 2, and the bottom of the annular curtain body is connected to the metal base 3. The bottom of the support truss 2 is connected to the metal base 3. The metal base 3 is welded by a metal tube and a metal plate. The shape can be designed according to the shape of the annular curtain body. When the size of the metal base 3 is small, the stability of the structure can be improved by adding a counterweight to the base, and an annular fixed hard curtain is formed through the above connection.

[0051] The back of the circular curtain body is connected to the support truss 2 by bolts, and the bottom of the circular curtain body is connected to the metal base 3 by bolts. A metal embedded part 7 is provided in the composite rectangular tube. The support truss 2 is connected to the metal base 3 through the metal embedded part 7 provided in the composite rectangular tube. The metal embedded part 7 is used to fix the connection between the support truss 2 and the metal base 3.

[0052] The metal base 3 is formed by welding a metal tube and a metal plate. The metal base 3 is an arc-shaped structure. The curvature of the metal base 3 is designed according to the ring screen body. The metal base 3 adopts a split structure, which is convenient for quick installation on site. When the size of the ring screen body is small, a counterweight can be added to the metal base 3 at the bottom of the corresponding ring screen body to improve the stability of the ring tube fixed hard screen.

[0053] The surrounding flange 8 is arranged around the outside of the composite material petal 1. The surrounding flange 8 provides a connection and fixing surface for the composite material petal 1 during the connection process. The quick connection device includes a locking body 5 and a cam sleeve 6. The locking body 5 is arranged on one side of the surrounding flange 8, and the cam sleeve 6 is arranged on the other side of the surrounding flange 8. The locking body 5 and the cam sleeve 6 are connected in cooperation. The quick connection device can be locked. By locking the quick connection device, the connection between the two composite material petals 1 can be made more stable and the gap between each two composite material petals 1 can be reduced.

[0054] The composite petal 1 is an epoxy resin-fiber composite material, and the fiber material is any one of glass fiber and carbon fiber. The ring screen body adopts the epoxy-fiber composite material to effectively solve the problems of the existing metal hard screen in complex manufacturing process, heavy weight and high maintenance cost.

[0055] The resin in the composite rectangular tube is any one of epoxy resin, polyurethane resin, and vinyl resin, and the fiber is any one of glass fiber, carbon fiber, and basalt fiber. The support truss 2 effectively solves the problems of heavy weight, difficult transportation, and inconvenient installation of existing metal hard curtains by adopting resin-fiber composite materials.

[0056] Resin is applied to the gaps between the composite petals 1. Applying resin to the gaps at the joints of the composite petals 1 smoothes the surface of the circular screen, facilitating imaging. Resin is applied to the mounting surfaces of the composite rectangular tubes to strengthen the connection between them. Resin is applied to the bolted connections between the support trusses 2 and the metal base 3 to tighten the connection. The resin is room-temperature curing, meaning it cures spontaneously at room temperature. This type of resin does not require external heating and cures at room temperature, forming a hard, solid material.

[0057] The present invention discloses a composite annular hard curtain, which includes an annular curtain body, a supporting truss 2 and a metal base 3. The annular curtain body is composed of a plurality of composite petals 1 with arcs, the supporting truss 2 is composed of a plurality of composite rectangular tubes spliced ​​together by metal joints 4 and screws, and the metal base 3 is formed by welding metal tubes and metal plates. By separating the annular curtain body, the supporting truss 2 and the metal base 3, the problems of inconvenient transportation and difficult maintenance of the metal hard curtain in the prior art are solved; the composite petals 1 and the composite rectangular tubes are both made of resin-fiber composite materials. The resin-fiber composite materials have the advantages of high strength, high rigidity, high temperature resistance, corrosion resistance, light weight, strong designability and good processing performance. The annular fixed hard curtain made of resin-fiber composite materials can be used in a variety of complex scenes indoors or outdoors.

[0058] See also Figure 1-10 This embodiment describes a method for manufacturing a composite material annular fixed hard curtain, which specifically includes the following steps:

[0059] S1: Manufacturing a composite material petal 1, wherein the composite material petal 1 is formed using an integrated molding technology by laying a fiber-resin prepreg on a molding mold, demolding the mold after molding, and polishing the surface of the blank after demolding. The fiber-resin prepreg laying technology improves production efficiency and reduces costs, while also improving product quality and reliability;

[0060] S2: Manufacturing composite rectangular tubes, wherein the composite rectangular tubes are formed by pultrusion. The pultrusion process can realize automated control. The pultrusion process can effectively improve the production efficiency of the composite rectangular tubes, and can meet the needs of large-scale composite rectangular tube production. In addition, the pultrusion process generates less waste during the production process, thereby reducing production costs. The composite rectangular tubes produced by the pultrusion process do not require subsequent processing, thereby saving raw materials and energy;

[0061] S3: Installing flanges 8 around the composite material petals 1, installing quick connection devices on both sides of the flanges 8, and connecting several composite material petals 1 to form a ring curtain body through the flanges 8 on the composite material petals 1 and the quick connection devices;

[0062] S4: Install metal embedded parts 7 in the composite rectangular tubes, connect several composite rectangular tubes through metal joints 4 and bolts to form a support truss 2, and apply room temperature fast curing resin on the connecting surface of every two composite rectangular tubes for reinforcement;

[0063] S5: Connect the support truss 2 and the metal base 3 through the metal embedded parts 7 in the composite rectangular tube. Apply room temperature fast curing resin to the joints of the support truss 2 and the metal base 3 to further ensure a stable connection between the support truss 2 and the metal base 3.

[0064] S6: Connect several composite petals 1 to the supporting truss 2 with bolts in ascending order. The composite petals 1 are connected to each other through flanges 8 and quick connection devices to form a circular curtain body. The gap between each two composite petals 1 is coated with a room temperature fast curing resin, which ensures a firm connection between each two composite petals 1 while also keeping the surface of the circular curtain body smooth and flat.

[0065] S7: Connect the bottom of the ring curtain body to the metal base 3 with bolts, lock the quick connection device between the composite material petals 1, and complete the installation.

[0066] The composite material petals 1 and the composite material rectangular tubes have a simple molding process, do not require secondary processing, and are low in cost, thereby solving the problem of complex manufacturing process and high cost of metal hard curtains in the prior art. The composite material petals 1 are connected to each other through a quick connection device and four-sided flanges 8 to form a ring curtain body. The back of the ring curtain body is connected to the support truss 2 through bolts, and the bottom of the ring curtain body is connected to the metal base 3 through bolts. The composite material rectangular tubes are connected to form the support truss 2 through metal joints 4 and screws. This allows for rapid on-site installation and fixation, saves production and installation time, and solves the problem of difficult installation of existing metal hard curtains.

[0067] See also Figure 8 In this embodiment, the molding die is used to process a composite material petal 1. The molding die includes a mold cover 9 and a bottom film 10. The bottom of the mold cover 9 is arc-shaped, and the top of the bottom film 10 is arc-shaped. The arc of the bottom of the mold cover 9 corresponds to the arc of the top of the bottom film 10. S1 specifically includes the following steps:

[0068] S11: evenly apply a release agent to the surface of the forming mold, cut the prepreg according to the structure of the composite material petal 1, and lay the prepreg on the upper surface of the base film 10. Use specific laying angles of 0°, 90°, 45°, and -45° and lay the prepreg alternately in a certain order to ensure that the prepreg is completely attached to the surface of the forming mold and at the same time remove the bubbles between the prepreg layers to ensure that the prepreg is firmly attached to the surface of the base film b.

[0069] S12: After the prepreg is laid, the excess part is trimmed, and the mold cover 9 is placed on the prepreg and the base film 10. A hot press is used to apply pressure to the top of the mold cover 9 and cure according to the curing system of the epoxy resin. That is, the pressure is maintained until the product is cured and formed, and then demolded after forming;

[0070] S13: After demoulding, remove excess materials, burrs and burrs, polish the surface of the blank to make it smooth, and finally spray the paint.

[0071] See also Figure 9 In this embodiment, the manufacturing method of the composite material annular fixed hard curtain, S2 specifically includes the following steps:

[0072] S21: Preheat the pultruder for 2-3 hours within a temperature range of ±2°C, fix the yarn guide plate 11, preform plate 12, glue injection box 13, scraper plate 14 and rectangular tube forming mold 15 on the pultruder operating table in sequence, install the fiber bundle on the yarn rack, extract the sand head, and evenly insert it into the hole of the yarn guide plate 11;

[0073] S22: Prepare and stir the glue solution. Weigh the resin, curing agent, accelerator, inner film agent, and filler in proportion and stir evenly with a stirrer for at least 20 minutes. The amount of glue used is set according to the size of the composite rectangular tube. Pour the stirred glue solution into the glue injection box 13 to fully infiltrate the fiber bundle yarn.

[0074] S23: Setting the temperature of the rectangular tube forming die 15, sequentially setting the temperature of the front area, the middle area, and the rear area of ​​the rectangular tube forming die 15, and then heating the die. After reaching the predetermined temperature, the pultruder and the traction device are started;

[0075] S24: The fiber bundle yarn passes through the hole of the yarn guide plate 11, and then passes through the preformed plate 12, the glue injection box 13, the scraper plate 14 and the rectangular forming mold 15 in sequence, thereby obtaining a composite material rectangular tube. The composite material rectangular tube after molding is inspected, and a smooth surface without defects is a qualified product.

[0076] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A method for manufacturing a composite material annular fixed hard curtain, characterized by: The composite annular fixed hard curtain comprises an annular curtain body, a metal base (3) and a supporting truss (2), wherein the annular curtain body is arc-shaped, the back of the annular curtain body is connected to the supporting truss (2), the bottom of the annular curtain body is connected to the metal base (3), and the bottom of the supporting truss (2) is connected to the metal base (3), the annular curtain body comprises a plurality of composite petals (1) with equal areas and arcs, the plurality of composite petals (1) are connected by flanges (8) and quick connection devices around them, the supporting truss (2) comprises a plurality of composite rectangular tubes and a plurality of metal joints (4), every two composite rectangular tubes are connected by a metal joint (4), the composite petals (1) and the composite rectangular tubes are both made of resin-based fiber composite materials, and the curved surface area of ​​the composite petals (1) is less than or equal to 1.2m 2 , weight is less than or equal to 15Kg; The manufacturing method comprises the following steps: S1: manufacturing a composite material petal (1), wherein the composite material petal (1) is formed by placing a prepreg on a forming mold using an integrated forming technology; S2: manufacturing a composite rectangular tube, wherein the composite rectangular tube is formed by a pultrusion process; S3: A flange (8) is installed around the composite material petal (1), and locking devices are installed on both sides of the flange (8); S4: installing a metal embedded part (7) in the composite rectangular tube, and connecting the composite rectangular tube through a metal joint (4) and bolts to form a supporting truss (2); S5: Connecting the support truss (2) to the metal base (3) through the metal embedded parts (7) in the composite rectangular tube; S6: Connecting a plurality of composite material petals (1) to the supporting truss (2) by bolts in order from low to high, and connecting the plurality of composite material petals (1) by flanges (8) and quick connection devices around them to form a ring curtain body; S7: Connect the bottom of the ring screen body to the metal base (3) with bolts, lock the quick connection device, and complete the installation; The molding die is used for processing composite material petals (1), and the molding die comprises a mold cover (9) and a bottom film (10), the bottom of the mold cover (9) is arc-shaped, and the upper part of the bottom film (10) is arc-shaped, and the arc of the bottom of the mold cover (9) corresponds to the arc of the upper part of the bottom film (10), and the step S1 specifically comprises the following steps: S11: evenly apply a release agent to the surface of the forming mold, and spread the prepreg on the upper surface of the base film (10) so that the prepreg is completely adhered to the surface of the forming mold; S12: After the prepreg is laid, the excess part is trimmed, and the mold cover (9) is placed on the prepreg and the base film (10). A hot press is used to apply pressure to the top of the mold cover (9). The pressure is maintained until the product is solidified and formed, and then demoulded; S13: After demoulding, the surface of the blank is polished smooth and sprayed with paint.

2. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The back of the annular curtain body is connected to the support truss (2) via bolts, the bottom of the annular curtain body is connected to the metal base (3) via bolts, a metal embedded part (7) is provided in the composite rectangular tube, and the support truss (2) is connected to the metal base (3) via the metal embedded part (7) provided in the composite rectangular tube.

3. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The metal base (3) is formed by welding a metal tube and a metal plate, and the metal base (3) is an arc-shaped structure.

4. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The surrounding flange (8) is arranged around the outside of the composite material petal (1), and the quick connection device includes a locking body (5) and a cam sleeve (6), the locking body (5) is arranged on one side of the surrounding flange (8), and the cam sleeve (6) is arranged on the other side of the surrounding flange (8), and the locking body (5) and the cam sleeve (6) are connected in a cooperative manner.

5. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The composite material petal (1) is an epoxy resin-fiber composite material, and the fiber is any one of glass fiber and carbon fiber.

6. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The resin in the composite rectangular tube is any one of epoxy resin, polyurethane resin and vinyl resin, and the fiber is any one of glass fiber, carbon fiber and basalt fiber.

7. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: The gaps between the plurality of composite material petals (1) are coated with resin, the mounting surfaces of the plurality of composite material rectangular tubes are coated with resin, and the connection between the support truss (2) and the metal base (3) via bolts is coated with resin.

8. The method for manufacturing a composite material annular fixed hard curtain according to claim 1, characterized in that: Step S2 specifically includes the following steps: S21: preheating the pultruder, fixing the yarn guide plate (11), the preform plate (12), the glue injection box (13), the glue scraper (14) and the rectangular tube forming mold (15) on the pultruder operating table in sequence, installing the fiber bundle yarn on the yarn rack, pulling out the sand head, and evenly inserting it into the hole of the yarn guide plate (11); S22: preparing and stirring the glue solution, and pouring the stirred glue solution into the glue injection box (13) so that the glue solution soaks the fiber bundle yarn; S23: Setting the temperature of the rectangular tube forming die (15), then heating the die, and starting the pultrusion machine and the traction device after reaching the predetermined temperature; S24: The fiber bundle yarn passes through the hole of the yarn guide plate (11), and then passes through the preformed plate (12), the glue injection box (13), the scraper plate (14) and the rectangular forming mold (15) in sequence, thereby obtaining a composite material rectangular tube.

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