Production forming process of paddle with stable structure

Abstract

The invention relates to the technical field of aircrafts, in particular to a production forming process of a paddle with a stable structure, which comprises the following steps: providing carbon fiber cloth, and respectively placing the carbon fiber cloth on the top surface of a lower forming block and the bottom surface of an upper forming block; pressing the middle mold on the lower mold; another piece of carbon fiber cloth is provided, and the carbon fiber cloth is placed on the inner wall of the propeller hub forming cavity; the upper mold is pressed on the middle mold and heated, so that a blade piece is formed in the blade forming cavity, and a propeller hub piece is formed in the propeller hub forming cavity; and the propeller hub piece is connected with the propeller seat. Through cooperation of the upper mold, the middle mold and the lower mold, the propeller hub piece and the multiple blade pieces are integrally formed, the sealing performance between the propeller hub piece and the blade pieces can be guaranteed, gaps between the propeller hub piece and the blade pieces can be completely eliminated, and the connection stability between the propeller hub piece and the blade pieces can also be guaranteed; therefore, the stability and safety of the aircraft in the flight process can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft, and in particular to a production and molding process for a blade with a stable structure. Background Art

[0002] In modern drone designs, ducted fans are often used as propulsion devices to improve efficiency, reduce noise and enhance safety. Ducted fans consist of a closed annular casing (i.e., the duct) and rotating blades located inside it. The blades include a central hub and multiple blades connected to the outer periphery of the hub, which work together to generate thrust or lift.

[0003] Due to the high cost of propeller blades, the drone blades currently on the market use a detachable connection between the hub and the blades. This design allows damaged blades to be replaced individually, thereby reducing maintenance costs and improving resource utilization.

[0004] However, the detachable structure may cause tiny gaps or looseness in the connection between the hub and the blades. These gaps may affect the aerodynamic characteristics and lead to reduced efficiency. What is more serious is that under high-speed rotation, any loose connection may cause mechanical failure, which in turn threatens the safety and reliability of the drone.

[0005] Therefore, it is currently necessary to provide a production process that can integrally form the blades and the hub. Summary of the invention

[0006] The purpose of the present invention is to provide a production and molding process for a blade with a stable structure in view of the above-mentioned deficiencies in the prior art.

[0007] The object of the present invention is achieved through the following technical solutions: a production and molding process of a structurally stable blade, comprising a blade and a production mold;

[0008] The blade comprises a propeller seat, a propeller hub and a plurality of blade members; the plurality of blade members are arranged along the outer circumference of the propeller hub; the propeller hub and the plurality of blade members are integrally formed; the propeller hub is connected to the propeller seat;

[0009] The production mold includes a lower mold, a middle mold and an upper mold;

[0010] A hub positioning hole is provided in the middle of the lower mold; a plurality of lower forming blocks are distributed on the top of the lower mold with the hub positioning hole as the center;

[0011] A clearance hole is provided through the middle of the middle mold; a plurality of upper forming blocks are distributed at the bottom of the middle mold with the clearance hole as the center; the upper forming blocks are movably arranged on the middle mold along the diameter direction with the clearance hole as the center;

[0012] The following steps are also included:

[0013] S1. Provide carbon fiber cloth, and place the carbon fiber cloth on the top surface of the lower forming block and the bottom surface of the upper forming block respectively;

[0014] S2. Press the middle mold onto the lower mold so that the upper molding block is disposed between two adjacent lower molding blocks, a blade molding cavity is formed between the bottom of the upper molding block and the top of the lower molding block, and a hub molding cavity is formed between the ends of all the upper molding blocks close to the hub positioning hole and the ends of all the upper molding blocks close to the clearance hole;

[0015] S3, providing another carbon fiber cloth, and placing the carbon fiber cloth on the inner wall of the hub molding cavity;

[0016] S4, pressing the upper mold onto the middle mold and heating it, so that a blade component is formed in the blade molding cavity and a hub component is formed in the hub molding cavity;

[0017] S5. Connect the propeller hub and the propeller seat.

[0018] The present invention is further configured that a receiving cavity is provided in the propeller hub; the propeller seat is sleeved in the receiving cavity;

[0019] The hub is shaped like a truncated cone; the accommodating cavity is shaped like a truncated cone; the diameter of the top of the hub is smaller than the diameter of the bottom of the hub; the diameter of the top of the accommodating cavity is smaller than the diameter of the bottom of the accommodating cavity.

[0020] The present invention is further configured such that the paddle seat comprises a connecting column, an upper connecting ring arranged at the top of the connecting column, and a lower connecting ring arranged at the bottom of the connecting column;

[0021] In step S5, the outer periphery of the upper connecting ring is sealed and connected to the top of the accommodating cavity by glue; and the outer periphery of the lower connecting ring is sealed and connected to the bottom of the accommodating cavity by glue.

[0022] The present invention is further configured such that the upper connecting ring is provided with a plurality of upper vent holes along the circumferential direction; the lower connecting ring is provided with a plurality of lower vent holes along the circumferential direction; the connecting column is provided with an axial hole along the length direction;

[0023] A plurality of upper vent holes are distributed at equal angles along the center of the upper connecting ring; and a plurality of lower vent holes are distributed at equal angles along the center of the lower connecting ring.

[0024] The present invention is further configured such that the outer wall of the connecting column is provided with a flow guiding slope;

[0025] The inner wall of the accommodating cavity is provided with a plurality of limiting grooves; the outer wall of the lower connecting ring is provided with a plurality of limiting blocks matched with the limiting grooves.

[0026] The present invention is further configured that a forming top block is provided in the middle of the upper mold; the forming top block is penetrated through the hub forming cavity and the clearance hole;

[0027] An inclined surface is provided at one end of the upper forming block away from the hub positioning hole; a receiving groove for receiving the middle mold is provided at the bottom of the upper mold; and an inclined groove cooperating with the inclined surface is provided at the bottom of the receiving groove;

[0028] In step S4, when the upper mold is pressed on the middle mold, the upper molding block gradually moves toward the hub positioning hole under the cooperation of the inclined groove and the inclined surface, so that the carbon fiber cloth in the blade molding cavity is molded into a blade part.

[0029] The present invention is further configured such that a guide rod is provided on the top of the lower forming block; a guide groove matching the guide rod is provided on the bottom of the middle mold;

[0030] The guide rod sleeve is provided with a first spring; the guide groove is provided with a contact plane that contacts with the first spring.

[0031] The present invention is further configured that the middle mold is provided with a strip sliding groove and a strip connecting groove; the strip sliding groove is communicated with the strip connecting groove; a sliding block is slidably provided in the strip sliding groove; a connecting block is provided on the top of the upper forming block; the connecting block is detachably connected to the sliding block after passing through the strip connecting groove;

[0032] The middle mold is provided with a reset rod; and a second spring is provided between the reset rod and one end of the upper molding block away from the hub positioning hole.

[0033] The present invention is further configured such that a blade overflow groove communicating with the blade forming cavity is formed between the bottom of the upper forming block and the bottom of the lower forming block.

[0034] The present invention is further configured that the outer wall of the molded top block is provided with a limit strip;

[0035] The inner wall of the hub positioning hole is provided with a hub overflow groove which is communicated with the hub molding cavity.

[0036] Beneficial effects of the present invention: The present invention integrates a hub component and a plurality of blade components into one piece by cooperating with an upper mold, a middle mold and a lower mold, thereby ensuring the sealing between the hub component and the blade components, completely eliminating the gap between the hub component and the blade components, and ensuring the connection stability between the hub component and the blade components, thereby improving the stability and safety of the aircraft during flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0038] Figure 1 It is a structural schematic diagram of the production mold of the present invention;

[0039] Figure 2 is a cross-sectional view of a production mold of the present invention;

[0040] Figure 3 It is a structural exploded view of the production mold of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the lower mold of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the mold in the present invention;

[0043] Figure 6 It is a structural schematic diagram of the mold in the present invention from another perspective;

[0044] Figure 7 It is a schematic diagram of the structure of the lower mold and the upper forming block of the present invention;

[0045] Figure 8 It is a schematic diagram of the structure of the cooperation between the lower mold and the middle mold of the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the upper mold of the present invention;

[0047] Fig.10 is a schematic diagram of the structure of the blade of the present invention;

[0048] Fig.11 is a schematic structural diagram of the blade of the present invention from another perspective;

[0049] Fig.12 is a cross-sectional view of a blade of the present invention;

[0050] Fig.13 This is a schematic diagram of the structure of the propeller blade after the propeller seat is hidden in the propeller blade of the present invention;

[0051] Fig.14 It is a structural schematic diagram of the paddle seat of the present invention;

[0052] Among them: 1, lower mold; 11, hub positioning hole; 12, lower forming block; 2, middle mold; 21, clearance hole; 22, upper forming block; 23, inclined surface; 3, upper mold; 31, forming top block; 32, limit strip; 33, accommodating groove; 34, abutting inclined groove; 41, blade forming cavity; 42, hub forming cavity; 51, guide rod; 52, guide groove; 53, first spring; 54, abutting plane; 61, strip sliding groove; 62, strip Connecting groove; 63, sliding block; 64, connecting block; 7, reset rod; 71, second spring; 81, blade overflow groove; 82, hub overflow groove; 91, propeller seat; 911, connecting column; 912, upper connecting ring; 913, lower connecting ring; 92, hub member; 921, accommodating chamber; 93, blade member; 941, upper vent hole; 942, lower vent hole; 943, shaft hole; 95, guide slope; 961, limit groove; 962, limit block. DETAILED DESCRIPTION

[0053] The present invention is further described in conjunction with the following examples.

[0054] Depend on Figures 1 to 14 It can be seen that the production and molding process of a structurally stable blade described in this embodiment includes a blade and a production mold;

[0055] The blade includes a propeller seat 91, a propeller hub 92 and a plurality of blades 93; the plurality of blades 93 are arranged along the periphery of the propeller hub 92; the propeller hub 92 and the plurality of blades 93 are integrally formed; the propeller hub 92 is connected to the propeller seat 91;

[0056] The production mold includes a lower mold 1, a middle mold 2 and an upper mold 3;

[0057] A hub positioning hole 11 is provided in the middle of the lower mold 1; a plurality of lower molding blocks 12 are distributed on the top of the lower mold 1 with the hub positioning hole 11 as the center;

[0058] A clearance hole 21 is provided through the middle of the middle mold 2; a plurality of upper forming blocks 22 are provided at the bottom of the middle mold 2 with the clearance hole 21 as the center; the upper forming blocks 22 are movably arranged on the middle mold 2 along the diameter direction with the clearance hole 21 as the center;

[0059] The following steps are also included:

[0060] S1, providing carbon fiber cloth, and placing the carbon fiber cloth on the top surface of the lower forming block 12 and the bottom surface of the upper forming block 22 respectively;

[0061] S2, press the middle mold 2 onto the lower mold 1, so that the upper molding block 22 is arranged between two adjacent lower molding blocks 12, a blade molding cavity 41 is formed between the bottom of the upper molding block 22 and the top of the lower molding block 12, and a hub molding cavity 42 is formed between the ends of all the upper molding blocks 22 close to the hub positioning hole 11 and the ends of all the upper molding blocks 22 close to the clearance hole 21;

[0062] S3, providing another carbon fiber cloth, and placing the carbon fiber cloth on the inner wall of the hub molding cavity 42;

[0063] S4, pressing the upper mold 3 onto the middle mold 2 and heating it, so that a blade member 93 is formed in the blade molding cavity 41, and a hub member 92 is formed in the hub molding cavity 42;

[0064] S5. Connect the propeller hub 92 and the propeller seat 91.

[0065] Specifically, in the production and molding process of the structurally stable blade described in this embodiment, when producing the blade, the carbon fiber cloth is first placed on the top surface of the lower molding block 12 and the bottom surface of the upper molding block 22 respectively, and then the middle mold 2 is pressed onto the lower mold 1, so that the upper molding block 22 is arranged between two adjacent lower molding blocks 12, and a blade molding cavity 41 is formed between the bottom of the upper molding block 22 and the top of the lower molding block 12, and a hub molding cavity 42 is formed between the ends of all the upper molding blocks 22 close to the hub positioning hole 11 and the ends of all the upper molding blocks 22 close to the make way hole 21. At this time, the carbon fiber cloth is arranged in the blade molding cavity 41, and the carbon fiber cloth in the blade molding cavity 41 partially overflows into the hub molding cavity 42; then a circle of another carbon fiber cloth is placed on the inner wall of the hub molding cavity 42, and finally the upper mold 3 is pressed onto the middle mold 2, and during the heating and pressing process of the upper mold 3 During the process, a blade member 93 is formed in the blade molding cavity 41, and a hub member 92 is formed in the hub molding cavity 42, so that the blade member 93 and the hub member 92 are an integrated structure after molding, ensuring the sealing and connection stability between the hub member 92 and the blade member 93, and then the hub member 92 is fixedly connected to the propeller seat 91, the top of the propeller seat 91 can be installed with a fairing, and the bottom of the propeller seat 91 can be installed with a motor, so that the aircraft has a flight function; in this embodiment, the hub member 92 and the plurality of blade members 93 are integrally molded by the cooperation of the upper mold 3, the middle mold 2 and the lower mold 1, which can ensure the sealing between the hub member 92 and the blade member 93, completely eliminate the gap between the hub member 92 and the blade member 93, and also ensure the connection stability between the hub member 92 and the blade member 93, thereby improving the stability and safety of the aircraft during flight.

[0066] The present embodiment describes a production and molding process for a structurally stable blade, wherein a receiving cavity 921 is provided in the propeller hub member 92; the propeller seat 91 is sleeved in the receiving cavity 921; specifically, by sleeved the propeller seat 91 in the receiving cavity 921 in the propeller hub member 92, the stability of the connection between the propeller seat 91 and the propeller hub member 92 can be enhanced.

[0067] The hub member 92 is truncated cone-shaped; the accommodating cavity 921 is truncated cone-shaped; the diameter of the top of the hub member 92 is smaller than the diameter of the bottom of the hub member 92; the diameter of the top of the accommodating cavity 921 is smaller than the diameter of the bottom of the accommodating cavity 921. Specifically, through the above configuration, the surface of the hub member 92 is an inclined surface 23 structure, which can effectively guide the wind flow and ensure the stability and efficiency of the aircraft during flight.

[0068] The present embodiment describes a production and molding process for a structurally stable blade, wherein the blade seat 91 includes a connecting column 911, an upper connecting ring 912 arranged at the top of the connecting column 911, and a lower connecting ring 913 arranged at the bottom of the connecting column 911; in step S5, the outer periphery of the upper connecting ring 912 is sealed and connected to the top of the accommodating cavity 921 by glue; and the outer periphery of the lower connecting ring 913 is sealed and connected to the bottom of the accommodating cavity 921 by glue.

[0069] Specifically, during the production process, the hub component 92 and the plurality of blade components 93 are first integrally formed to ensure the sealing and connection stability between the hub component 92 and the blade components 93, and then the propeller seat 91 is inserted into the accommodating cavity 921 in the hub component 92, and then the outer periphery of the upper connecting ring 912 is sealedly connected to the top of the accommodating cavity 921, and the outer periphery of the lower connecting ring 913 is sealedly connected to the bottom of the accommodating cavity 921, so that the connection between the propeller seat 91 and the hub component 92 is stable and reliable; wherein the upper connecting ring 912 can be installed with a fairing, and the lower connecting ring 913 can be installed with a motor, so that the aircraft has a flight function.

[0070] The present embodiment describes a production and molding process for a structurally stable blade, wherein the upper connecting ring 912 is provided with a plurality of upper air vents 941 along the circumferential direction; the lower connecting ring 913 is provided with a plurality of lower air vents 942 along the circumferential direction; the connecting column 911 is provided with an axial hole 943 along the length direction, and the axial hole 943 is connected to the motor shaft or the power output shaft of the engine; specifically, through the above arrangement, the wind flow can enter the accommodating cavity 921 through the upper air vent 941, and then dissipate the heat to the motor or the gearbox through the lower air vent 942.

[0071] The plurality of upper vent holes 941 are distributed at equal angles along the center of the upper connecting ring 912; and the plurality of lower vent holes 942 are distributed at equal angles along the center of the lower connecting ring 913. The above arrangement can effectively dissipate heat from the motor.

[0072] In the production and molding process of a structurally stable blade described in this embodiment, the outer wall of the connecting column 911 is provided with a guide slope 95; through the above arrangement, it can guide the wind flow entering the accommodating cavity 921, and further effectively dissipate the heat of the motor.

[0073] The inner wall of the accommodating cavity 921 is provided with a plurality of limiting grooves 961; the outer wall of the lower connecting ring 913 is provided with a plurality of limiting blocks 962 that cooperate with the limiting grooves 961. Specifically, through the above arrangement, after the upper connecting ring 912 and the lower connecting ring 913 are respectively installed on the inner wall of the accommodating cavity 921, relative rotation between the propeller seat 91 and the propeller hub 92 can be prevented.

[0074] In the production and molding process of a blade with a stable structure described in this embodiment, a molding top block 31 is provided in the middle of the upper mold 3; the molding top block 31 penetrates the hub molding cavity 42 and the clearance hole 21;

[0075] The upper molding block 22 is provided with an inclined surface 23 at one end away from the hub positioning hole 11; the bottom of the upper mold 3 is provided with a receiving groove 33 for receiving the middle mold 2; the bottom of the receiving groove 33 is provided with an abutting inclined groove 34 that cooperates with the inclined surface 23;

[0076] In step S4 , when the upper mold 3 is pressed onto the middle mold 2 , the upper molding block 22 gradually moves toward the hub positioning hole 11 by the cooperation of the inclined groove 34 and the inclined surface 23 , so that the carbon fiber cloth in the blade molding cavity 41 is molded into a blade member 93 .

[0077] Specifically, during the process of pressing the upper mold 3 downward, the upper molding block 22 gradually moves toward the direction of the hub positioning hole 11 with the cooperation of the inclined groove 34 and the inclined surface 23, so that the carbon fiber cloth in the blade molding cavity 41 is molded into a blade component 93; and the molding top block 31 squeezes the carbon fiber cloth in the hub molding cavity 42 to form a hub component 92.

[0078] The present embodiment describes a production and molding process for a structurally stable blade, wherein a guide rod 51 is provided on the top of the lower molding block 12; a guide groove 52 cooperating with the guide rod 51 is provided on the bottom of the middle mold 2; through the above arrangement, the middle mold 2 can stably perform lifting and lowering activities on the lower mold 1.

[0079] The guide rod 51 is sleeved with a first spring 53, and the guide groove 52 is provided with a contact plane 54 that contacts the first spring 53. Through the above arrangement, when the mold is opened, the first spring 53 can be reset, which facilitates the separation of the middle mold 2 and the lower mold 1, thereby facilitating the unloading of the finished product.

[0080] The present embodiment describes a production and molding process for a structurally stable blade, wherein the middle mold 2 is provided with a strip sliding groove 61 and a strip connecting groove 62; the strip sliding groove 61 is connected to the strip connecting groove 62; the strip sliding groove 61 is slidably provided with a sliding block 63; a connecting block 64 is provided on the top of the upper molding block 22; the connecting block 64 passes through the strip connecting groove 62 and is detachably connected to the sliding block 63; specifically, through the above-mentioned arrangement, the upper molding block 22 can be stably moved in the middle mold 2; in addition, by detachably connecting the connecting block 64 and the sliding block 63, it is convenient to disassemble and assemble the upper molding block 22 and the middle mold 2.

[0081] The middle mold 2 is provided with a reset rod 7; a second spring 71 is provided between the end of the upper molding block 22 away from the hub positioning hole 11 and the reset rod 7. Specifically, during the downward pressing of the upper mold 3, the upper molding block 22 gradually moves toward the hub positioning hole 11 under the cooperation of the inclined groove 34 and the inclined surface 23, and the upper molding block 22 compresses the second spring 71 at this time; when the mold is opened, under the action of the second spring 71, the upper molding block 22 is convenient to move in the direction away from the hub positioning hole 11, and the upper molding block 22 is convenient to separate from the lower molding block 12, so as to facilitate the unloading of the finished product.

[0082] In the production and molding process of a blade with a stable structure described in this embodiment, a blade overflow groove 81 connected to the blade molding cavity 41 is formed between the bottom of the upper molding block 22 and the bottom of the lower molding block 12. The above arrangement facilitates the overflow of excess carbon fiber cloth in the blade molding cavity 41.

[0083] In the production and molding process of a structurally stable blade described in this embodiment, the outer wall of the molding top block 31 is provided with a limiting strip 32 ; the above arrangement facilitates the formation of a corresponding limiting strip 32 on the inner wall of the hub member 92 .

[0084] The inner wall of the hub positioning hole 11 is provided with a hub overflow groove 82 which is communicated with the hub molding cavity 42. Through the above arrangement, it is convenient for the redundant carbon fiber cloth in the hub molding 2 to overflow.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A production and molding process for a structurally stable blade, characterized in that: Including blades and production molds; The blade comprises a propeller seat, a propeller hub and a plurality of blade members; the plurality of blade members are arranged along the outer circumference of the propeller hub; the propeller hub and the plurality of blade members are integrally formed; the propeller hub is connected to the propeller seat; The production mold includes a lower mold, a middle mold and an upper mold; A hub positioning hole is provided in the middle of the lower mold; a plurality of lower forming blocks are distributed on the top of the lower mold with the hub positioning hole as the center; A clearance hole is provided through the middle of the middle mold; a plurality of upper forming blocks are distributed at the bottom of the middle mold with the clearance hole as the center; the upper forming blocks are movably arranged on the middle mold along the diameter direction with the clearance hole as the center; The following steps are also included: S1. Provide carbon fiber cloth, and place the carbon fiber cloth on the top surface of the lower forming block and the bottom surface of the upper forming block respectively; S2. Press the middle mold onto the lower mold so that the upper molding block is disposed between two adjacent lower molding blocks, a blade molding cavity is formed between the bottom of the upper molding block and the top of the lower molding block, and a hub molding cavity is formed between the ends of all the upper molding blocks close to the hub positioning hole and the ends of all the upper molding blocks close to the clearance hole; S3, providing another carbon fiber cloth, and placing the carbon fiber cloth on the inner wall of the hub molding cavity; S4, pressing the upper mold onto the middle mold and heating it, so that a blade component is formed in the blade molding cavity and a hub component is formed in the hub molding cavity; S5. Connect the propeller hub and the propeller seat.

2. The production and molding process of a structurally stable blade according to claim 1, characterized in that: The hub is provided with a receiving cavity; the propeller seat is sleeved in the receiving cavity; The hub is shaped like a truncated cone; the accommodating cavity is shaped like a truncated cone; the diameter of the top of the hub is smaller than the diameter of the bottom of the hub; the diameter of the top of the accommodating cavity is smaller than the diameter of the bottom of the accommodating cavity.

3. A production and molding process for a structurally stable blade according to claim 2, characterized in that: The paddle seat includes a connecting column, an upper connecting ring arranged at the top of the connecting column, and a lower connecting ring arranged at the bottom of the connecting column; In step S5, the outer periphery of the upper connecting ring is sealed and connected to the top of the accommodating cavity by glue; and the outer periphery of the lower connecting ring is sealed and connected to the bottom of the accommodating cavity by glue.

4. A production and molding process for a structurally stable blade according to claim 3, characterized in that: The upper connecting ring is provided with a plurality of upper vent holes along the circumferential direction; the lower connecting ring is provided with a plurality of lower vent holes along the circumferential direction; the connecting column is provided with an axial hole along the length direction; A plurality of upper vent holes are distributed at equal angles along the center of the upper connecting ring; and a plurality of lower vent holes are distributed at equal angles along the center of the lower connecting ring.

5. A production and molding process for a structurally stable blade according to claim 3, characterized in that: The outer wall of the connecting column is provided with a flow guiding slope; The inner wall of the accommodating cavity is provided with a plurality of limiting grooves; the outer wall of the lower connecting ring is provided with a plurality of limiting blocks matched with the limiting grooves.

6. A production and molding process for a structurally stable blade according to claim 1, characterized in that: A forming top block is provided in the middle of the upper mold; the forming top block penetrates the hub forming cavity and the clearance hole; An inclined surface is provided at one end of the upper forming block away from the hub positioning hole; a receiving groove for receiving the middle mold is provided at the bottom of the upper mold; and an inclined groove cooperating with the inclined surface is provided at the bottom of the receiving groove; In step S4, when the upper mold is pressed on the middle mold, the upper molding block gradually moves toward the hub positioning hole under the cooperation of the inclined groove and the inclined surface, so that the carbon fiber cloth in the blade molding cavity is molded into a blade part.

7. A production and molding process for a structurally stable blade according to claim 6, characterized in that: A guide rod is provided on the top of the lower forming block; a guide groove matching the guide rod is provided on the bottom of the middle mold; The guide rod sleeve is provided with a first spring; the guide groove is provided with a contact plane that contacts with the first spring.

8. The production and molding process of a structurally stable blade according to claim 1, characterized in that: The middle mold is provided with a strip sliding groove and a strip connecting groove; the strip sliding groove is connected with the strip connecting groove; a sliding block is slidably provided in the strip sliding groove; a connecting block is provided on the top of the upper forming block; the connecting block is detachably connected with the sliding block after passing through the strip connecting groove; The middle mold is provided with a reset rod; and a second spring is provided between the reset rod and one end of the upper molding block away from the hub positioning hole.

9. The production and molding process of a structurally stable blade according to claim 1, characterized in that: A blade overflow groove communicating with the blade forming cavity is formed between the bottom of the upper forming block and the bottom of the lower forming block.

10. The production and molding process of a structurally stable blade according to claim 6, characterized in that: The outer wall of the molded top block is provided with a limiting strip; The inner wall of the hub positioning hole is provided with a hub overflow groove which is communicated with the hub molding cavity.

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