Processing method for integrating structure of Magnus effect rotating drum and wind sail

Abstract

The application discloses a processing method of a Magnus effect rotating drum wind sail structure integration, which comprises the following steps: winding a filamentous composite material on a mold as a bottom layer of a product; winding a structural core material on the bottom layer after the winding of the bottom layer is completed; winding the filamentous composite material on the structural core material as an outer layer of the product after the winding of the structural core material is completed; sealing the bottom layer and the outer layer and the structural core material therebetween, vacuumizing, and performing a resin flow guiding process after the winding is completed; guiding liquid resin to the bottom layer and the outer layer and the structural core material therebetween through a hose; solidifying the resin and performing segmented demolding after the resin is solidified. On the basis of the winding process adopting a sandwich structure, the application additionally adds a resin flow guiding process, integrates the resin for the winding formed sandwich structure, integrates the structure of the rotating drum wind sail, and has the advantages of high product strength, good quality, low processing difficulty and low comprehensive cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of navigation, in particular to a Magnus effect rotating cylinder wind sail. BACKGROUND

[0002] The traditional manufacturing process of the Magnus effect rotating cylinder wind sail adopts a splicing process. The splicing process includes a segmented splicing process and a split splicing process. In the segmented splicing process, each segment of the rotating cylinder wind sail manufactured by the process is heavy, and the splicing of each segment is time-consuming and laborious and has poor straightness. In the split splicing process, due to the length of the rotating cylinder wind sail reaching 35 m, the splicing by workers is difficult and intensive, and the rotating cylinder wind sail manufactured by the process has poor straightness.

[0003] Therefore, the prior art uses a winding process to manufacture the rotating cylinder wind sail. The filaments are wound on the mold, which consumes a large amount of material and is heavy. To solve this drawback, the prior art uses a "sandwich" structure, for example, the Magnus rotor wind sail cylinder wall structure disclosed in the patent document with the authorization announcement number CN 218315613 U, which uses a clamping method to clamp the middle bundle layer. The maximum size of the thickness of the bundle layer of the "sandwich" structure is limited, which is not conducive to the improvement of the overall stability of the rotating cylinder wind sail, and is not conducive to the lightweight of the rotating cylinder wind sail. SUMMARY

[0004] The technical problem solved by the present application is that the Magnus effect rotating cylinder wind sail adopts a "sandwich" structure for forming, the wall thickness is relatively thin, and the middle bundle layer is clamped by a clamping method, which is not conducive to the improvement of the overall stability of the rotating cylinder wind sail.

[0005] To solve the above technical problems, the present application provides the following technical solution: a processing method for the structure integration of a Magnus effect rotating cylinder wind sail, comprising the following steps:

[0006] First, winding a filamentous composite material on a mold as a bottom layer of the product;

[0007] Second, after the bottom layer is wound, winding a structural core material on the bottom layer;

[0008] Third, after the winding of the structural core material is completed, winding a filamentous composite material on the structural core material as an outer layer of the product;

[0009] Fourth, after the winding is completed, sealing the bottom layer and the outer layer, and the structural core material therebetween, vacuumizing, and performing a resin flow guiding process; liquid resin is introduced into the bottom layer and the outer layer, and the structural core material therebetween through a hose;

[0010] Fifth, curing the resin, and demolding the segments after the resin is cured.

[0011] The application cancels the splicing process and improves the winding process in the prior art. Specifically, on the basis of the winding process adopting the "sandwich" structure, the resin flow guiding process is added, the resin for the "sandwich" structure formed by winding is integrated, the structure of the rotary drum sail is integrated, and the overall stability of the rotary drum sail is improved.

[0012] The filamentous composite material is glass fiber or carbon fiber; and the structural core material is foamed PET. That is, the bottom layer can be glass fiber, and the outer layer is glass fiber; or the bottom layer is glass fiber, and the outer layer is carbon fiber; or the bottom layer is carbon fiber, and the outer layer is carbon fiber.

[0013] After the "sandwich" structure winding is completed, the resin flow guiding process is performed. Specifically, the product as a whole is covered with a vacuum bag film, the vacuum bag film is matched with a vacuum pipe and a glue injection pipe, the vacuum pipe is connected with a vacuum pump, and the glue injection pipe is connected with a glue filling machine. The air in the vacuum bag film is pumped out by the vacuum pump, after the vacuum degree reaches the requirement, the valve of the glue injection port is opened, the resin is uniformly guided and filled into the gaps of the glass fiber or carbon fiber, and the gaps of the structural core material.

[0014] After the resin flow guiding process is completed, the mold is heated and cured. The heating mode can be electric heating, for example, the power is connected with the central shaft, so that the central shaft acts as a conductor to generate heat and heat the product. Alternatively, the product is packaged at both ends, steam is introduced into the product, and steam heating is performed.

[0015] Since the "sandwich" structure is formed by the winding process and then reinforced by the resin flow guiding process, the thickness of the bottom layer and the outer layer can be reduced, and the thickness of the structural core material can be increased. As an option, the thickness of the bottom layer is 5 mm, the thickness of the structural core material is 50 mm, and the thickness of the outer layer is 5 mm. The thickness of the filamentous composite material layer can be reduced from 28 mm of a pure composite material product to 10 mm, and the overall weight can be reduced by about 50%, which means that the material cost can be reduced by more than 50%. Taking a rotary drum sail with a diameter of 5 m and a length of 35 m as an example, the weight can be reduced from 22 tons to 11 tons. The material usage is greatly reduced, and the material cost is significantly reduced. The cost of glass fiber composite material is about 45,000-65,000 yuan / ton, and the material cost of a single product can be reduced by more than 500,000 yuan.

[0016] The mold can be vertically arranged or horizontally arranged.

[0017] When the mold is vertically arranged, the mold is vertically arranged on a bottom turntable, a tower is arranged beside the mold, and a winding trolley capable of ascending and descending is arranged on the tower.

[0018] A top centering support arm is arranged at the top of the tower, the top centering support arm is connected with a top centering mold, and the top centering mold cooperates with the top of the mold.

[0019] The mold is composed of several mold units stacked up and down, the top of the tower is provided with a cross beam, and the cross beam is provided with a hook capable of moving horizontally. The number of towers is a pair, and the cross beam is arranged on the pair of towers and located above the mold. With the help of the hook, workers stack several mold units up and down to form a mold. After the drum wind sail is formed, the hook can be lowered to the drum wind sail, the mold unit is lifted, and the mold unit is moved horizontally to the outside of the drum wind sail to complete the demolding of the drum wind sail.

[0020] The tower is provided with a guide rail, a trolley is movably arranged on the guide rail, and the trolley is provided with a power unit for driving the trolley to move up and down along the guide rail. For example, a rack is arranged on the guide rail, the rack is engaged with a gear, and the gear is installed on the shaft of a motor. The motor is installed on the trolley. The motor drives the gear to move up and down along the rack, thereby driving the trolley to move up and down along the guide rail. The trolley carries composite materials, and the composite materials are wound on the mold. In the case that the mold rotates and the trolley moves up and down, the composite materials are uniformly wound on the mold to form a product.

[0021] When the mold is horizontally arranged, the two ends of the mold are supported and driven to rotate by roller wheels, a track is arranged beside the mold, and a reciprocating winding trolley is arranged on the track. The support roller wheel at one end of the mold is driven by a motor, and the other end is a driven roller.

[0022] The mold is composed of several mold units axially spliced together, the mold unit includes a center cylinder and several fan-shaped pieces surrounding the center cylinder, threaded holes are formed on the end face of the center cylinder, strip-shaped holes are formed on the fan-shaped pieces, and bolts fitted in the threaded holes and the strip-shaped holes are used to install the fan-shaped pieces on the center cylinder; the radius of the inner arc surface of the fan-shaped piece is smaller than the inner diameter of the center cylinder, a center shaft is inserted into the circle surrounded by the inner arc surfaces of the several fan-shaped pieces, one end of the center shaft is provided with a positioning hole, and the other end of the center shaft is provided with a positioning column. Two adjacent mold units are spliced together through the cooperation of the positioning hole and the positioning column.

[0023] During processing, the fan-shaped pieces of the mold unit are pushed out, a center shaft is inserted into the circle surrounded by the inner arc surfaces of the several fan-shaped pieces, the fan-shaped pieces are spread apart, the bolts are relatively displaced with the strip-shaped holes, then the bolts are tightened to fix the connection between the fan-shaped pieces and the center cylinder. After the first to fifth steps in the processing method are completed, the worker pulls out the center shaft from the circle surrounded by the inner arc surfaces of the several fan-shaped pieces, loosens the bolts, and pulls in the fan-shaped pieces, so that the outer diameter of the outer circle surrounded by the several fan-shaped pieces becomes smaller, and the mold unit is separated from the product on the inside of the product. The worker sequentially demolds the several mold units spliced together to form a mold, thereby realizing segmented demolding.

[0024] The sector piece comprises a straight wall, a sector connecting part fixedly connected with the straight wall, and a sector limiting part, both ends of the straight wall are provided with the sector connecting part and the sector limiting part, a strip-shaped hole is arranged in the sector connecting part, the sector connecting part at the upper end of the straight arm is connected with the upper end of the central cylinder piece, the sector connecting part at the lower end of the straight wall is connected with the lower end of the central cylinder piece, and the inner arc surface of the sector limiting part abuts against the straight wall.

[0025] The inner side of the straight wall of the sector piece is provided with a handle, and the side wall of the central cylinder piece is hollow. After the central shaft piece is pulled out, the worker enters the central cylinder piece, the rope is connected with the handles of the two opposite sector pieces, the rod is wound around the middle part of the rope, the rope is shortened, and the two sector pieces are close to each other, and the sector piece and the product are demolded in this way.

[0026] As an option, the central shaft piece is provided with external threads, the inner arc surface of the sector piece is provided with internal threads, and the central shaft piece is inserted into the circle surrounded by the inner arc surfaces of the plurality of sector pieces in a rotating manner.

[0027] The large composite material rotating drum sail is manufactured by adopting the winding method and the resin flow guiding process in combination, the internal mold is segmented demolding, internal heating is used for curing the product, the produced product is an integral whole without splicing seams and splicing joints. The product has high strength, good quality, low processing difficulty, and low comprehensive cost. BRIEF DESCRIPTION OF DRAWINGS

[0028] The application will be further described below in combination with the drawings:

[0029] Figure 1 The first embodiment is a schematic diagram of a processing method for the structure integration of the Magnus effect rotating drum sail;

[0030] Figure 2 For Figure 1 A schematic diagram of winding composite materials on the middle mold 10 and performing a resin flow guiding process;

[0031] Figure 3 For Figure 2 The front view;

[0032] Figure 4 For Figure 1 A schematic diagram of the middle mold 10;

[0033] Figure 5 For Figure 4 A schematic diagram of the middle mold unit 20;

[0034] Figure 6 For Figure 5 The exploded view;

[0035] Figure 7 For Figure 6 The re-explosion view;

[0036] Figure 8 Fig. 1 is a perspective view of the product of the present invention; Figure 5 Fig. 2 is a sectional view of the product of the present invention;

[0037] Figure 9 Fig. 3 is a perspective view of the product of the present invention; Figure 5 Fig. 4 is a sectional view of the product of the present invention after two mold units 20 are assembled;

[0038] Figure 10 Fig. 5 is a perspective view of the product of the present invention; Figure 6 Fig. 6 is a schematic view of the product of the present invention of the fan-shaped piece 40;

[0039] Figure 11 Fig. 7 is a schematic view of the product of the present invention of the center tube 30; Figure 6 Fig. 8 is a schematic view of the product of the present invention of the center axis 50;

[0040] Figure 12 Fig. 9 is a sectional view of the product of the present invention of the Magnus effect rotating cylinder wind sail; Figure 6 Fig. 10 is a schematic view of the product of the present invention of the center axis 50;

[0041] Figure 13 Fig. 11 is a sectional view of the product of the present invention of the Magnus effect rotating cylinder wind sail after molding on a mold;

[0042] Figure 14 Fig. 12 is a schematic view of the product of the present invention of the top structure after molding on a mold;

[0043] Figure 15 Fig. 13 is a schematic view of the product of the present invention of the center axis 50 being detached from the top mold unit 20; Figure 14 Fig. 14 is a schematic view of the product of the present invention of the top bolt 42 of the mold unit 20 being detached;

[0044] Figure 16 Fig. 15 is a schematic view of the product of the present invention of a worker entering the mold unit 20; Figure 15 Fig. 16 is a schematic view of the product of the present invention of the worker acting on the rope 48, pulling the two fan-shaped pieces 40;

[0045] Figure 17 Fig. 17 is a schematic view of the product of the present invention of the top mold unit 20 being removed from the product. Figure 16

[0046] Figure 18 Figure 17

[0047] Figure 19 Figure 18

[0048] Explanation of symbols in the figures:

[0049] 10, mold;

[0050] 20, mold unit;

[0051] 30, center tube; 31, threaded hole; 32, clearance hole;

[0052] ​​​​​40, sector; 41, strip hole; 42, bolt; 420, nut; 43, inner arc surface of sector; 44, straight wall; 45, sector connecting part; 46, sector limiting part; 47, handle; 48, rope;

[0053] 50, central shaft; 51, positioning hole; 52, positioning column;

[0054] 60, bottom turntable;

[0055] 70, tower; 71, winding trolley; 72, top centering support arm; 73, top centering mold;

[0056] 80, product; 81, bottom layer; 82, structural core material; 83, outer layer; 84, resin;

[0057] 91, vacuum pipe; 910, vacuum interface; 92, glue injection pipe; 920, glue injection interface. DETAILED DESCRIPTION

[0058] The processing method of the structure integration of the Magnus effect rotating drum sail includes the following steps:

[0059] First, winding the filamentous composite material on the mold 10 as the bottom layer 81 of the product;

[0060] Second, after the bottom layer winding is completed, winding the structural core material 82 on the bottom layer;

[0061] Third, after the winding of the structural core material is completed, winding the filamentous composite material on the structural core material as the outer layer 83 of the product, as shown in Figure 13

[0062] Fourth, after the winding is completed, sealing the bottom layer 81 and the outer layer 83, and the structural core material 82 between the two, vacuumizing, and performing the resin flow guiding process; the liquid resin is introduced into the bottom layer and the outer layer, and the structural core material between the two through the hose;

[0063] Fifth, curing the resin, and segment demolding after the resin is cured.

[0064] The filamentous composite material is glass fiber or carbon fiber; the structural core material 82 is foamed PET.

[0065] The thickness of the bottom layer 81 is 2.5-5mm, the thickness of the structural core material 82 is 35-50mm, and the thickness of the outer layer 83 is 2.5-5mm.

[0066] As shown in Figure 1 , the mold 10 is vertically arranged.

[0067] ​The mold 10 is erected on the bottom turntable 60, and a tower 70 is arranged beside the mold, and a winding trolley 71 capable of lifting is arranged on the tower.

[0068] The top of the tower 70 is provided with a top centering support arm 72, which is connected to a top centering mold 73 matched with the top of the mold 10.

[0069] As Figures 5 to 9 , the mold 10 is composed of several mold units 20 axially spliced, which includes a center cylinder 30 and several sector-shaped pieces 40 surrounding the center cylinder, the end face of the center cylinder is provided with threaded holes, the sector-shaped piece is provided with a strip-shaped hole 41, and the bolt 42 matched in the threaded hole and the strip-shaped hole installs the sector-shaped piece on the center cylinder; the radius of the inner arc surface 43 of the sector-shaped piece is smaller than the inner diameter of the center cylinder, the center shaft 50 is inserted into the circle surrounded by the inner arc surfaces of the several sector-shaped pieces, one end of the center shaft is provided with a positioning hole 51, and the other end of the center shaft is provided with a positioning column 52, and the adjacent two mold units are spliced together through the cooperation of the positioning hole and the positioning column.

[0070] As Figure 6 , Figure 10 , the sector-shaped piece 40 includes a straight wall 44, a sector-shaped connecting part 45 fixedly connected with the straight wall, and a sector-shaped limiting part 46, the straight wall is provided with the sector-shaped connecting part and the sector-shaped limiting part at both ends, the strip-shaped hole 41 is arranged in the sector-shaped connecting part, the sector-shaped connecting part at the upper end of the straight arm is connected with the upper end of the center cylinder 30, the sector-shaped connecting part at the lower end of the straight wall is connected with the lower end of the center cylinder, and the inner arc surface of the sector-shaped limiting part abuts against the straight wall.

[0071] As Figure 10 , the inner side of the straight wall of the sector-shaped piece 40 is provided with a handle 47, and the side wall of the center cylinder 30 is hollowed out.

[0072] The center shaft 50 is provided with external threads, the inner arc surface of the sector-shaped piece is provided with internal threads, and the center shaft 50 is inserted into the circle surrounded by the inner arc surfaces of the several sector-shaped pieces in a rotating manner.

[0073] As Figure 1 , when the product is processed, the mold is stacked up and down by several mold units, the top of the tower is provided with a cross beam, and the cross beam is provided with a hook capable of moving horizontally. The number of towers is a pair, the cross beam is arranged on the pair of towers and located above the mold. With the aid of the hook, the workers stack several mold units up and down.

[0074] Reference Figures 6 to 9When the mold unit assembled by stacking the upper and lower mold units together, the sector 40 of the mold unit 20 is pushed outwards, and the central shaft 50 is inserted into the circle surrounded by the inner arc surface 43 of the sector, the sector 40 is expanded, the bolt 42 is displaced relative to the strip-shaped hole 41, then the bolt 42 is tightened to fix the connection between the sector and the central cylinder. After the installation of one mold unit 20 is completed, the next mold unit is stacked on the mold unit, and the two adjacent mold units 20 are connected through the positioning column 52 of the lower mold unit and the positioning hole 51 of the upper mold unit.

[0075] After the mold 10 is assembled, the first to fourth steps in the processing method are completed. The tower is provided with a guide rail, and a trolley is movably arranged on the guide rail. The trolley is provided with a power unit for driving the trolley to move up and down along the guide rail. For example, a rack is arranged on the guide rail, the rack is engaged with a gear, and the gear is installed on the shaft of a motor. The motor is installed on the trolley. The motor drives the gear to move up and down along the rack, thereby driving the trolley to move up and down along the guide rail. The trolley carries the composite material, and the composite material is wound on the mold. In the case that the mold rotates and the trolley moves up and down, the composite material is uniformly wound on the mold. The bottom layer of the product can be glass fiber filaments, and the outer layer can be glass fiber filaments; or the bottom layer can be glass fiber filaments, and the outer layer can be carbon fiber filaments; or the bottom layer can be carbon fiber filaments, and the outer layer can be carbon fiber filaments.

[0076] Reference Figure 3 After the winding of the “sandwich” structure is completed, the resin flow guiding process is performed. Specifically, the entire product is covered with a vacuum bag film, and the vacuum bag film is matched with a vacuum pipe and a glue injection pipe. The vacuum pipe is connected to a vacuum pump, and the glue injection pipe is connected to a glue filling machine. The vacuum pump is used to pump out the air in the vacuum bag film. After the vacuum degree reaches the required value, the valve of the glue injection port is opened, and the resin is uniformly introduced to fill the gaps of the glass fiber or carbon fiber, and the gaps of the structural core material.

[0077] After the resin flow guiding process is completed, the mold 10 is heated and cured. The heating method can be electric heating. For example, a power source is connected to the central shaft, so that the central shaft 50 acts as a conductor to generate heat and heat the product. Alternatively, the product is packaged at both ends, and steam is introduced into the product for steam heating.

[0078] Reference Figures 4 to 19 After curing, demolding is performed. The worker demolds from the top of the product, removes the central shaft 50 from the circle surrounded by the inner arc surface 43 of the sector, loosens the bolt 42, enters the central cylinder 30, and loosens the nut 420 on the bolt at the bottom of the mold unit. The worker connects the handles 47 of the two opposite sectors with a rope 48, winds a rod in the middle of the rope, shortens the rope, and brings the two sectors closer to each other. In this way, the demolding of the sector 40 and the product is realized. The worker demolds the several mold units 20 that are spliced into the mold 10 from top to bottom in sequence, thereby realizing segmented demolding.

[0079] Reference Figure 1 The hook can be lowered, deep into the drum sail, hoist the mold unit, and move laterally to the outside of the drum sail, complete the demolding of the drum sail.

[0080] Since the "sandwich" structure is formed by winding process and then reinforced by resin flow guiding process, the thickness of the bottom layer and the outer layer can be reduced, and the thickness of the structural core material can be increased. The thickness of the bottom layer is 5mm, the thickness of the structural core material is 50mm, and the thickness of the outer layer is 5mm. The thickness of the filament composite layer can be reduced from 28mm of pure composite material product to 10mm, the overall weight can be reduced by about 50%, which means that the material cost can be reduced by more than 50%.

[0081] Taking a drum sail with a diameter of 5m and a length of 35m as an example. The segmented splicing process is adopted, which is to divide it into 7 segments, each segment is 5m long for winding prefabrication, and then each segment is fixed to the butt joint mold. After adjusting the butt joint accuracy, manual work is performed to splice each segment into a whole with a length of 35m. Each splicing joint needs 6 skilled workers, and it takes 2-3 days to splice. The cycle of manufacturing one product by segmented splicing process is 2-3 weeks. The labor cost for only one splicing work of each product is 20-30 thousand yuan, and investment is also needed for splicing mold, increasing process quality inspection personnel, etc. The weight of each segment of the drum sail manufactured by this process is heavy, and it is time-consuming and laborious to splice each segment, and the straightness is poor.

[0082] The segmented splicing process is adopted, and the traditional manufacturing process is to divide it into 3 segments, and each segment adopts resin flow guiding process. First, lay the reinforcing material on the mold, i.e. "dry" fabric, then lay the vacuum auxiliary material such as release cloth, flow guide net, vacuum bag, and finally use the vacuum pump to perform vacuumizing. Once all the air is extracted from the vacuum bag, the composite material is completely flattened under atmospheric pressure, and the liquid resin mixed with the curing agent can be introduced into the reinforcing material through the hose, and flows through the entire reinforcing material under vacuum. When the resin is completely filled into the reinforcing material, the resin supply is cut off, and then the resin is cured. The quality of resin flow guiding, i.e. the strength of the product, is close to that using prepreg process. After the completion of the 3-segment arc-shaped piece, workers splice it into a drum sail. Since the length of the drum sail reaches 35m, it is difficult for workers to splice, and the strength is large, and the straightness of the drum sail manufactured by this process is poor.

[0083] The filament is wound on the mold, and the wall thickness of the drum sail is 60mm. The winding reaches the predetermined size, the consumption amount is large, and the weight is large, and the weight of the drum sail reaches 22T.

[0084] The weight of the embodiment can be reduced from 22 tons to 11 tons. The material usage is greatly reduced, and the material cost is significantly reduced. The cost of glass fiber composite material is about 45-65 thousand yuan / ton, and the material cost of a single product can be reduced by more than 500 thousand yuan.

[0085] Comparison between the processing method of the application and the segmented splicing process

[0086]

[0087] Comparison between the processing method of the application and the pure composite material winding process

[0088]

[0089] The processing method of the structure integration of the Magnus effect rotating drum wind sail includes the following steps:

[0090] First, winding the filamentous composite material on the mold 10 as the bottom layer 81 of the product;

[0091] Second, after the bottom layer winding is completed, winding the structural core material 82 on the bottom layer;

[0092] Third, after the structural core material winding is completed, winding the filamentous composite material on the structural core material as the outer layer 83 of the product, for reference Figure 13 ;

[0093] Fourth, after winding is completed, sealing the bottom layer 81 and the outer layer 83, and the structural core material 82 between them, for reference Figure 3 , vacuumizing, and performing resin flow guiding process; the liquid resin is introduced into the bottom layer and the outer layer, and the structural core material between them through a hose;

[0094] Fifth, curing the resin, and demolding the segmented product after the resin is cured.

[0095] The filamentous composite material is glass fiber or carbon fiber; and the structural core material 82 is foamed PET.

[0096] The thickness of the bottom layer 81 is 5mm, the thickness of the structural core material 82 is 50mm, and the thickness of the outer layer 83 is 5mm.

[0097] The mold 10 is horizontally arranged;

[0098] The mold 10 is supported and driven to rotate by roller wheels at both ends, and a track is arranged beside the mold, and a reciprocating winding trolley 71 is matched on the track. The supporting roller wheel at one end of the mold is driven by a motor, and the other end is a driven roller.

[0099] For reference Figure 6 , Figure 8The mold 10 is composed of several mold units 20 which are axially spliced together, the mold unit comprises a center cylinder 30, several fan-shaped pieces 40 which are arranged around the center cylinder, threaded holes are formed on the end face of the center cylinder, the fan-shaped piece is provided with a strip-shaped hole 41, and the bolt 42 which is fitted in the threaded hole and the strip-shaped hole is used to install the fan-shaped piece on the center cylinder; the radius of the inner arc surface 43 of the fan-shaped piece is smaller than the inner diameter of the center cylinder, the center shaft 50 is inserted into the circle surrounded by the inner arc surfaces of the several fan-shaped pieces, the one end of the center shaft is provided with a positioning hole 51, and the other end of the center shaft is provided with a positioning column 52, and the two adjacent mold units are spliced together through the cooperation of the positioning hole and the positioning column.

[0100] The fan-shaped piece 40 comprises a straight wall 44, a fan-shaped connecting part 45 and a fan-shaped limiting part 46 which are fixedly connected with the straight wall, the fan-shaped connecting part and the fan-shaped limiting part are arranged at both ends of the straight wall, the strip-shaped hole 41 is arranged on the fan-shaped connecting part, the fan-shaped connecting part on the upper end of the straight wall is connected with the upper end of the center cylinder 30, the fan-shaped connecting part on the lower end of the straight wall is connected with the lower end of the center cylinder, and the inner arc surface of the fan-shaped limiting part is abutted with the straight wall.

[0101] The inner side of the straight wall of the fan-shaped piece 40 is provided with a handle 47, and the side wall of the center cylinder 30 is hollowed out.

[0102] The center shaft 50 is provided with external threads, the inner arc surface of the fan-shaped piece is provided with internal threads, and the center shaft 50 is inserted into the circle surrounded by the inner arc surfaces of the several fan-shaped pieces in a rotating manner.

[0103] When the product is processed, the mold is composed of several mold units which are stacked together.

[0104] When the mold units which are stacked together are assembled, the fan-shaped piece 40 of the mold unit 20 is pushed out, the center shaft 50 is inserted into the circle surrounded by the inner arc surfaces of the several fan-shaped pieces, the fan-shaped piece 40 is expanded, the bolt 42 is relatively displaced with the strip-shaped hole 41, then the bolt 42 is tightened to fix the connection between the fan-shaped piece and the center cylinder. After one mold unit 20 is installed, the next mold unit is stacked on the mold unit, and the two adjacent mold units 20 are connected through the positioning column 52 of the left mold unit and the positioning hole 51 of the right mold unit.

[0105] After the mold 10 is assembled, the first to fourth steps in the processing method are completed. The trolley is movably arranged on the track, and the trolley is provided with a power unit which drives the trolley to move left and right along the track. The trolley carries the composite material, and the composite material is wound on the mold. Under the condition that the mold rotates and the trolley moves left and right, the composite material is uniformly wound on the mold. The bottom layer of the product can be glass fiber filaments, and the outer layer can be glass fiber filaments; or the bottom layer can be glass fiber filaments, and the outer layer can be carbon fiber filaments; or the bottom layer can be carbon fiber filaments, and the outer layer can be carbon fiber filaments.

[0106] After the winding of the "sandwich" structure is completed, resin flow guiding process is carried out. Specifically, the whole product is covered with a vacuum bag film, the vacuum bag film is matched with a vacuum pipe and a resin injection pipe, the vacuum pipe is connected with a vacuum pump, and the resin injection pipe is connected with a resin injection machine. The air in the vacuum bag film is pumped out by the vacuum pump, after the vacuum degree reaches the requirement, the valve of the resin injection port is opened, and the resin is uniformly guided into the gaps of the glass fiber or carbon fiber and the gaps of the structural core material.

[0107] After the resin flow guiding process is completed, the mold 10 is heated and cured. The heating method can be electric heating, for example, the power is connected with the central shaft, the central shaft 50 acts as a conductor to generate heat, and the product is heated. Alternatively, the product is sealed at both ends, steam is introduced into the product, and steam heating is carried out.

[0108] After curing, demolding is carried out. The worker demolds from the left side / right side of the product, extracts the central shaft 50 from the circular shape surrounded by the inner arc surfaces 43 of the plurality of fan-shaped pieces, loosens the bolts 42, enters the central cylindrical piece 30, connects the handles 47 of the two opposite fan-shaped pieces with a rope, winds the middle part of the rope with a rod, shortens the rope, and moves the two fan-shaped pieces closer to each other. In this way, the demolding of the fan-shaped pieces 40 and the product is realized. The worker demolds the plurality of mold units 20 from top to bottom in sequence to realize segmented demolding.

[0109] The above is only the preferred embodiment of the present application. For those skilled in the art, according to the idea of the present application, the specific embodiment and application range can be changed, and the content of the description should not be understood as a limitation of the present application.

Claims

1. The processing method for the integrated Magnus effect rotary sail structure includes the following steps: First, filamentous composite material is wound around the mold (10) as the bottom layer (81) of the product. Second, after the bottom layer is wound, the structural core material (82) is wound on the bottom layer. Third, after the structural core material is wound, filamentous composite material is wound on the structural core material as the outer layer of the product (83). Its features are, It also includes the following steps: Fourth, after the winding is completed, the bottom layer (81) and the outer layer (83), as well as the structural core material (82) between them, are sealed, vacuumed, and resin flow is carried out; liquid resin is guided into the bottom layer, the outer layer, and the structural core material between them through a hose. Fifth, the curing of the resin, and the segmented demolding after the resin has cured; The mold (10) is set vertically; The mold (10) is erected on the bottom turntable (60), and a tower (70) is provided on the side of the mold. A winding trolley (71) that can be lifted and lowered is provided on the tower. The mold (10) is axially spliced ​​from several mold units (20). The mold unit includes a central cylindrical part (30) and several fan-shaped parts (40) surrounding the central cylindrical part. The end face of the central cylindrical part is provided with a threaded hole, and the fan-shaped parts are provided with a strip hole (41). The bolts (42) in the threaded hole and the strip hole are used to install the fan-shaped parts on the central cylindrical part. The radius of the inner arc surface (43) of the fan-shaped part is smaller than the inner diameter of the central cylindrical part. A central shaft (50) is inserted in the circle formed by the inner arc surfaces of several fan-shaped parts. One end of the central shaft is provided with a positioning hole (51), and the other end of the central shaft is provided with a positioning post (52). Two adjacent mold units are spliced ​​together by the cooperation of the positioning hole and the positioning post. The sector component (40) includes a straight wall (44), a sector connecting part (45) fixedly connected to the straight wall, and a sector limiting part (46). Both ends of the straight wall are provided with a sector connecting part and a sector limiting part. A strip hole (41) is provided in the sector connecting part. The sector connecting part at the upper end of the straight arm is connected to the upper end of the central cylinder (30). The sector connecting part at the lower end of the straight wall is connected to the lower end of the central cylinder. The inner arc surface of the sector limiting part abuts against the straight wall. The inner side of the straight wall of the fan-shaped part (40) is provided with a handle (47), and the side wall of the central cylindrical part (30) is hollowed out; After the resin diversion process is completed, the mold (10) is heated and cured. The heating method is electric heating. The power supply is connected to the central shaft, so that the central shaft (50) acts as a conductor to generate heat and heat the product.

2. The processing method for the integrated Magnus effect rotary sail structure as described in claim 1, characterized in that: The filamentous composite material is glass fiber filament or carbon fiber filament; the structural core material (82) is foamed PET.

3. The processing method for the integrated Magnus effect rotary sail structure as described in claim 1, characterized in that: The thickness of the bottom layer (81) is 2.5-5mm, the thickness of the structural core material (82) is 35-50mm, and the thickness of the outer layer (83) is 2.5-5mm.

4. The processing method for the integrated Magnus effect rotary sail structure as described in claim 1, characterized in that: The top of the tower (70) is provided with a top centering support arm (72), which is connected to the top centering mold (73), and the top centering mold is engaged with the top of the mold (10).

5. The processing method for the integrated Magnus effect rotary sail structure as described in claim 1, characterized in that: The top of the tower (70) is provided with a crossbeam, and the crossbeam is provided with a hook that can move laterally; there is a pair of towers, and the crossbeam is mounted on the pair of towers, located above the mold (10); with the help of the hook, several mold units are stacked together.

6. The processing method for the integrated Magnus effect rotary sail structure as described in claim 1, characterized in that: The central shaft (50) is provided with an external thread, and the inner arc surface of the sector-shaped parts is provided with an internal thread. The central shaft (50) is inserted into the circle formed by the inner arc surfaces of several sector-shaped parts in a rotating manner.

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