Folding propeller blade forming mold and using method thereof

Abstract

The invention relates to the field of paddle forming molds, in particular to a folding propeller paddle forming mold and a using method thereof.The forming mold comprises an upper mold base and a lower mold base, multiple sets of cavities are formed in the upper end of the lower mold base side by side, and each set of cavities comprises a pair of paddle cavities arranged in a central symmetry mode; the blade cavities in each group are communicated through a first channel, a second channel is arranged on the surface of the lower die base, control bases used for controlling the opening and closing states between the first channel and the second channel are arranged at the two ends of the second channel, a connecting channel is arranged in the center of each control base, and one end of each connecting channel is communicated with the corresponding first channel. Multiple groups of paddles can be synchronously formed, the hot press forming efficiency is improved, the forming process is based on the same molten flowing resin, it is guaranteed that the forming environments of the left paddle and the right paddle are the same, then it is guaranteed that the structural strength of the left paddle and the structural strength of the right paddle are highly consistent, and the situation that use is affected due to the paddle strength difference is avoided.

Description

Technical Field

[0001] This invention relates to the field of propeller blade forming mold technology, and in particular to a folding propeller blade forming mold and its method of use. Background Technology

[0002] Aircraft propellers are critical propulsion components in aircraft, drones, and some spacecraft. They convert the mechanical energy of the engine into the reaction force of the air through rotation, propelling the aircraft forward. Their design integrates aerodynamics, materials science, and mechanical engineering, directly affecting the performance, efficiency, and safety of the aircraft.

[0003] The folding propeller achieves rapid switching between flight and folded states through the precise coordination of the drive shaft, extension mechanism, and folding mechanism. Currently, during the thermoforming process of folding propellers, the two blades are thermoformed in different mold cavities. Even within the same mold, the temperature of the flowing resin material and the mold pressure in different cavities can vary. Since the structural strength of the thermoformed propeller is highly dependent on the temperature and pressure during thermoforming, this can lead to differences in the strength performance of the two blades, causing vibration during use and affecting normal operation. Summary of the Invention

[0004] The purpose of this invention is to provide a folding propeller blade forming mold and its usage method, in order to solve the above-mentioned technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A folding propeller blade forming mold includes an upper mold base and a lower mold base. Multiple sets of cavities are arranged side-by-side on the upper end of the lower mold base. Each set of cavities includes a pair of centrally symmetrically arranged blade cavities. The blade cavities in each set are connected by a first channel. A second channel is provided on the surface of the lower mold base. Control seats for controlling the opening and closing state between the first and second channels are provided at both ends of the second channel. A connecting channel is provided in the center of the control seats. One end of the connecting channel is connected to the first channel, and the other end of the connecting channel is flush with and aligned with the second channel. Centrally symmetrically arranged closing blocks are rotatably mounted at both ends of the connecting channel. The two closing blocks can rotate synchronously by 90° to control the opening and closing of the connecting channel. Locking blocks for locking the closing blocks are movably arranged on the inner wall of the connecting channel.

[0007] As a further aspect of the present invention: a hub cavity is provided at the end of the blade cavity, and an assembly hole is provided in the hub cavity. The bottom of the upper mold base is provided with a blade cavity, a hub cavity, a first channel and a second channel corresponding to the lower mold base. An assembly post is fixedly provided in the hub cavity of the upper mold base, and the assembly post is adapted to the assembly hole.

[0008] As a further embodiment of the present invention: one end of the closed block is rotatably engaged with the control seat via a pivot, the control seat is provided with an installation cavity, a pair of drive shafts are symmetrically rotatably mounted in the center of the installation cavity, the bottom of the pivot extends into the installation cavity and is connected to the drive shafts via a drive belt, and drive teeth are fixedly sleeved on the drive shafts.

[0009] As a further aspect of the present invention: a set of longitudinal toothed plates arranged in a centrally symmetrical manner are linearly slidably installed at the bottom of the mounting cavity; a micro motor is fixedly installed at the center of the bottom of the control seat; a drive tooth is fixedly connected to the output end of the micro motor; the drive tooth is located between the two longitudinal toothed plates and simultaneously meshes with one side of the two longitudinal toothed plates; the other side of the longitudinal toothed plates meshes with the corresponding transmission tooth.

[0010] As a further embodiment of the present invention: a stop block is fixedly provided at the tail of the locking block, a movable groove is provided inside the control seat, the stop block is movably installed in the movable groove, a compression spring is provided between the stop block and the side wall of the movable groove, a guide post is fixedly connected to the stop block, the guide post is slidably installed in the corresponding sliding groove, an L-shaped rod is fixedly connected to the bottom of the stop block, the L-shaped rod is movably installed in the through groove at the bottom of the movable groove, the L-shaped rod extends into the mounting cavity and a transverse toothed plate is fixedly connected to its end.

[0011] As a further embodiment of the present invention: a set of centrally symmetrical transmission shafts are rotatably installed in the mounting cavity. An upper gear and a lower gear are respectively sleeved on the transmission shafts. The upper gear meshes with the horizontal gear plate. An extension gear plate is fixedly provided at the upper end of the vertical gear plate along the straight direction. The extension gear plate and the horizontal gear plate are staggered and perpendicularly arranged. The lower gear meshes with the extension gear plate.

[0012] As a further embodiment of the present invention: the two ends of the connecting channel are fixedly provided with blocking parts, the sealing block abuts against the blocking parts after rotating 90°, the side wall of the connecting channel is provided with a receiving groove, and the sealing block is adapted to be embedded into the corresponding receiving groove after rotating 90° in the opposite direction.

[0013] As a further aspect of the present invention: positioning holes are provided at the four corners of the upper end of the lower mold base, and positioning pins are provided at the four corners of the bottom end of the upper mold base, with the positioning pins corresponding to the positioning holes one by one.

[0014] This invention also provides a method for using a folding propeller blade forming mold, which includes the following steps:

[0015] Step 1: Mold pretreatment, remove impurities from the lower mold base and upper mold base, and evenly spray release agent into the cavity. Then lay the cut carbon fiber prepreg into the corresponding cavity.

[0016] Step 2: Hot pressing molding. Press down the upper mold base to close it with the lower mold base, and start applying pressure and heating. Through hot pressing, the resin matrix in the prepreg begins to melt and flow.

[0017] Step 3: Opening and closing control. When the control seat controls the connection channel to open, the molten resin will flow continuously in all cavities. When the control connection channel is closed, the molten resin will flow independently in each of its respective cavities.

[0018] Step 4: Cooling and demolding. After the molten material is hot-pressed into shape, the pressure is released and the temperature is lowered. The clamps are then used to demold the material.

[0019] The beneficial effects of this invention are:

[0020] (1) By setting up a first channel, a second channel and a control seat, when the control seat is rotated 90° by the closed block to open the connecting channel, each set of blade cavities is connected to each other through the second channel and the connecting channel. At the same time, the blade cavities are connected through the first channel. During hot pressing, the molten material flows synchronously in the connected blade cavities. This not only enables multiple sets of blades to be molded synchronously, improving the efficiency of hot pressing, but also ensures that the molding environment of the left blade and the right blade is the same based on the same molten flowing resin. This ensures that the structural strength of the left blade and the right blade remains highly consistent, avoiding the impact of blade strength differences on use.

[0021] (2) When the control seat rotates 90° in the opposite direction using the closing block to close the connecting channel, the blade cavities are connected through the first channel, but each set of cavities is closed and isolated from each other, maintaining their own independent molding environment. By controlling the different temperatures and pressures of the molten resin in each set of cavities, blade sets with different structural strengths can be hot-pressed on a set of molds as needed, and the left and right blades of the blade set can still maintain consistent structural strength.

[0022] (3) When the two longitudinal tooth plates slide in opposite directions synchronously, the lower gear and the second transmission shaft will rotate through the extended tooth plate. The second transmission shaft will drive the corresponding transverse tooth plate to move linearly through the upper gear, and drive the locking block to move linearly through the L-shaped rod. When the closing block is closed, the locking block will emerge from the side wall of the connecting channel and block and limit the closing block, so as to prevent the closing block from deflecting during the hot pressing process, thereby improving the sealing effect. When the closing block is opened, the locking block can retract in time, so that the closing block can rotate smoothly and open. The opening and closing process of the closing block and the locking process of the locking block are coordinated and linked, and the transmission process is reliable and stable. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the lower mold base in this invention.

[0026] Figure 3 This is a schematic diagram of the upper mold base in this invention.

[0027] Figure 4 This is a schematic diagram of the control base in this invention.

[0028] Figure 5 This is a schematic diagram of the structure of the closed block in this invention.

[0029] Figure 6 This is a schematic diagram of the internal structure of the control base in this invention.

[0030] Figure 7 yes Figure 6 A magnified structural diagram of point A in the middle.

[0031] Figure 8 This is a schematic diagram of the internal structure of the mounting cavity in this invention.

[0032] Figure 9 This is a schematic diagram of the transmission structure of the closing block and the locking block in this invention.

[0033] Figure 10 This is a schematic diagram of the state when the first channel and the second channel are connected in this invention.

[0034] Figure 11 This is a schematic diagram of the structure of the folded blades after assembly in this invention.

[0035] In the diagram: 1. Lower mold base; 11. Positioning hole; 12. First channel; 13. Second channel; 2. Blade cavity; 21. Hub cavity; 22. Assembly hole; 3. Upper mold base; 31. Positioning pin; 32. Assembly column; 4. Control base; 41. Connecting channel; 411. Blocking part; 412. Receiving groove; 42. Sealing block; 421. Pivot; 422. Transmission belt; 43. Locking block; 431. Stop block; 432. Compression spring; 433. Guide column; 434. L-shaped rod; 435. Horizontal toothed plate; 44. Mounting cavity; 45. Transmission shaft one; 451. Transmission gear; 46. Transmission shaft two; 461. Upper gear; 462. Lower gear; 47. Micro motor; 471. Drive gear; 48. Longitudinal toothed plate; 481. Extension toothed plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Please see Figures 1-4 As shown, the present invention is a folding propeller blade forming mold, including an upper mold base 3 and a lower mold base 1. The upper end of the lower mold base 1 is provided with multiple sets of cavities arranged side by side. Each set of cavities includes a pair of blade cavities 2 arranged in a centrally symmetrical manner. The blade cavities 2 in each set are connected by a first channel 12. The surface of the lower mold base 1 is provided with a second channel 13. Both ends of the second channel 13 are provided with control seats 4 for controlling the opening and closing state between the first channel 12 and the second channel 13. A connecting channel 41 is provided in the center of the control seat 4. One end of the connecting channel 41 is connected to the first channel 12, and the other end of the connecting channel 41 is flush with the second channel 13. Both ends of the connecting channel 41 are rotatably mounted with centrally symmetrically arranged closing blocks 42. The two closing blocks 42 can be rotated synchronously by 90° to control the opening and closing of the connecting channel 41. A locking block 43 for locking the closing block 42 is movably provided on the inner wall of the connecting channel 41.

[0038] like Figure 10 and Figure 11 As shown, specifically, by setting the first channel 12, the second channel 13, and the control seat 4, when the control seat 4 rotates 90° using the closing block 42 to open the connecting channel 41, each set of blade cavities 2 is interconnected through the second channel 13 and the connecting channel 41. At the same time, the blade cavities 2 are connected through the first channel 12. During hot pressing, the molten material flows synchronously in the connected blade cavities 2, which not only enables multiple sets of blades to be formed simultaneously, improving the efficiency of hot pressing, but also ensures that the molding environment of the left and right blades is the same based on the same molten flowing resin. This ensures that the structural strength of the left and right blades remains highly consistent, avoiding the impact on use due to differences in blade strength.

[0039] More specifically, when the control seat 4 rotates 90° in the opposite direction using the closing block 42 to close the connecting channel 41, the blade cavities 2 are connected through the first channel 12, but each set of cavities is closed and isolated from each other, maintaining their own independent molding environment. By controlling the different temperatures and pressures of the molten resin in each set of cavities, blade sets with different structural strengths can be hot-pressed on a set of molds as needed, and the left and right blades of the blade set can still maintain consistent structural strength.

[0040] like Figure 3As shown, a hub cavity 21 is provided at the end of the blade cavity 2, and an assembly hole 22 is provided in the hub cavity 21. The bottom of the upper mold base 3 is provided with a blade cavity 2, a hub cavity 21, a first channel 12 and a second channel 13 corresponding to the lower mold base 1. An assembly post 32 is fixed in the hub cavity 21 of the upper mold base 3, and the assembly post 32 is correspondingly adapted to the assembly hole 22.

[0041] Specifically, during mold closing, the blade cavity 2 and hub cavity 21 in the upper mold base 3 and the lower mold base 1 correspond to each other to form a complete cavity. At the same time, the first channel 12 and the second channel 13 also correspond to each other, ensuring that the molten resin can flow smoothly between the blade cavities 2. Furthermore, the assembly column 32 is adapted to the assembly hole 22, so that the mounting hole can be smoothly formed on the hub of the molded blade.

[0042] like Figures 5-9 As shown, one end of the closed block 42 is rotatably engaged with the control seat 4 via a pivot 421. The control seat 4 has an installation cavity 44 inside. A pair of drive shafts 45 are symmetrically rotatably mounted in the center of the installation cavity 44. The bottom of the pivot 421 extends into the installation cavity 44 and is connected to the drive shafts 45 via a drive belt 422. Drive gears 451 are fixedly sleeved on the drive shafts 45.

[0043] Furthermore, a set of centrally symmetrically arranged longitudinal toothed plates 48 are linearly slidably mounted at the bottom of the mounting cavity 44. A micro motor 47 is fixedly mounted at the center of the bottom of the control seat 4. A drive tooth 471 is fixedly connected to the output end of the micro motor 47. The drive tooth 471 is located between the two longitudinal toothed plates 48 and meshes with one side of the two longitudinal toothed plates 48 at the same time. The other side of the longitudinal toothed plates 48 meshes with the corresponding transmission tooth 451.

[0044] Specifically, the micro motor 47 starts, driving the drive gear 471 to rotate. The drive gear 471 will drive the longitudinal tooth plates 48 on both sides to slide in opposite directions. When the two longitudinal tooth plates 48 slide in opposite directions, they will drive the corresponding transmission gear 451 and the transmission shaft 45 to rotate. The transmission shaft 45 will drive the corresponding pivot 421 to rotate through the transmission belt 422, so that the closing blocks 42 at both ends can rotate synchronously, thereby realizing the synchronous opening and closing control of the two ends of the connecting channel 41.

[0045] like Figures 5-9 As shown, a stop block 431 is fixedly provided at the tail of the locking block 43. A movable groove is provided inside the control seat 4. The stop block 431 is movably installed in the movable groove. A compression spring 432 is provided between the stop block 431 and the side wall of the movable groove. A guide post 433 is fixedly connected to the stop block 431. The guide post 433 is slidably installed in the corresponding sliding groove. An L-shaped rod 434 is fixedly connected to the bottom of the stop block 431. The L-shaped rod 434 is movably installed in the through groove at the bottom of the movable groove. The L-shaped rod 434 extends into the mounting cavity 44 and a transverse toothed plate 435 is fixedly connected to its end.

[0046] Furthermore, a set of centrally symmetrically arranged transmission shafts 46 are rotatably installed in the mounting cavity 44. An upper gear 461 and a lower gear 462 are respectively sleeved on the transmission shafts 46. The upper gear 461 meshes with the horizontal gear plate 435. An extension gear plate 481 is fixedly provided at the upper end of the longitudinal gear plate 48 along the straight direction. The extension gear plate 481 and the horizontal gear plate 435 are staggered and perpendicularly arranged. The lower gear 462 meshes with the extension gear plate 481.

[0047] Specifically, when the two longitudinal toothed plates 48 slide synchronously in opposite directions, the lower gear 462 and the second transmission shaft 46 will rotate through the extended toothed plate 481. The second transmission shaft 46 will drive the corresponding transverse toothed plate 435 to move linearly through the upper gear 461, and drive the locking block 43 to move linearly through the L-shaped rod 434. When the closing block 42 is closed, the locking block 43 will protrude from the side wall of the connecting channel 41 and block and limit the closing block 42, preventing the closing block 42 from deflecting during the hot pressing process, thereby improving the sealing effect. When the closing block 42 is opened, the locking block 43 can retract in time, so that the closing block 42 can rotate and open smoothly. The opening and closing process of the closing block 42 and the locking process of the locking block 43 are coordinated and linked, and the transmission process is reliable and stable.

[0048] like Figure 5 As shown, the two ends of the connecting channel 41 are fixed with blocking parts 411. After rotating 90°, the sealing block 42 abuts against the blocking part 411. The side wall of the connecting channel 41 is provided with a receiving groove 412. After rotating 90° in the opposite direction, the sealing block 42 is adapted to be embedded into the corresponding receiving groove 412.

[0049] Specifically, the blocking part 411 works with the locking block 43 to effectively limit the closing block 42, so that the closing block 42 remains fixed and sealed during the hot pressing process; the receiving groove 412 provides a receiving space for the closing block 42 when it is rotated open, so that the connecting channel 41 remains unobstructed.

[0050] like Figure 2 and Figure 3 As shown, positioning holes 11 are provided at the four corners of the upper end of the lower mold base 1, and positioning pins 31 are provided at the four corners of the bottom end of the upper mold base 3. The positioning pins 31 and the positioning holes 11 are provided one-to-one. The positioning cooperation between the positioning pins 31 and the positioning holes 11 can ensure that the upper mold base 3 and the lower mold base 1 are accurately closed, avoid relative movement between the two during the hot pressing process, and improve the processing accuracy.

[0051] The working principle of this invention is as follows: First, the mold is pre-treated to remove impurities from the lower mold base 1 and upper mold base 3. A release agent is then evenly sprayed into the cavity. Next, the cut carbon fiber prepreg is laid into the corresponding cavity. Then, the upper mold base 3 is pressed down to close with the lower mold base 1, and pressure and heating are initiated. Hot pressing causes the resin matrix in the prepreg to melt and flow. When the control base 4 rotates 90° using the closing block 42 to open the connecting channel 41, each set of blade cavities 2 is interconnected through the second channel 13 and the connecting channel 41. Simultaneously, the blade cavities 2 are connected through the first channel 12. During hot pressing, the molten material flows synchronously within the connected blade cavities 2. This not only enables simultaneous molding of multiple blades, improving hot pressing efficiency, but also ensures that the molding environment for the left and right blades is the same, based on the same molten resin. This guarantees that the structural strength of the left and right blades remains highly consistent, avoiding any impact on performance due to differences in blade strength. When the control seat 4 rotates 90° in the opposite direction using the closing block 42 to close the connecting channel 41, the blade cavities 2 are connected through the first channel 12, but each set of cavities is isolated from each other, maintaining its own independent molding environment. By controlling the different temperatures and pressures of the molten resin in each set of cavities, blade sets with different structural strengths can be hot-pressed on a single mold as needed, and the left and right blades of the blade set can still maintain consistent structural strength. When the closing block 42 is closed, the locking block 43 will protrude from the side wall of the connecting channel 41 and block and limit the closing block 42, preventing the closing block 42 from deflecting during the hot pressing process, thereby improving the sealing effect. When the closing block 42 is opened, the locking block 43 can retract in time, allowing the closing block 42 to rotate and open smoothly. After the molten material is hot-pressed, the pressure is released and the temperature is lowered, and the fixture is used for demolding.

[0052] This invention also provides a method for using a folding propeller blade forming mold, which includes the following steps:

[0053] Step 1: Mold pretreatment, remove impurities from the lower mold base 1 and the upper mold base 3, and spray release agent evenly in the cavity. Then lay the cut carbon fiber prepreg into the corresponding cavity.

[0054] Step 2: Hot pressing molding. Press down the upper mold base 3 to close it with the lower mold base 1, and start applying pressure and heating. Through hot pressing, the resin matrix in the prepreg begins to melt and flow.

[0055] Step 3: Opening and closing control. When the control seat 4 controls the connection channel 41 to open, the molten resin will flow continuously in all cavities. When the control connection channel 41 is closed, the molten resin will flow independently in each of its own cavities.

[0056] Step 4: Cooling and demolding. After the molten material is hot-pressed into shape, the pressure is released and the temperature is lowered. The clamps are then used to demold the material.

[0057] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A folding propeller blade forming mold, comprising an upper mold base (3) and a lower mold base (1), characterized in that, The upper end of the lower mold base (1) is provided with multiple sets of cavities arranged side by side. Each set of cavities includes a pair of blade cavities (2) arranged in a centrally symmetrical manner. The blade cavities (2) of each set are connected by a first channel (12). The surface of the lower mold base (1) is provided with a second channel (13). The two ends of the second channel (13) are provided with control seats (4) for controlling the opening and closing state between the first channel (12) and the second channel (13). The control seat (4) is provided with a connecting channel (41) in the center. One end of the connecting channel (41) is connected to the first channel (12), and the other end of the connecting channel (41) is aligned with the second channel (13). The two ends of the connecting channel (41) are rotatably installed with centrally symmetrical closing blocks (42). The two closing blocks (42) can rotate 90° synchronously to control the opening and closing of the connecting channel (41). The inner wall of the connecting channel (41) is movably provided with locking blocks (43) for locking the closing blocks (42).

2. The folding propeller blade forming mold according to claim 1, characterized in that, The blade cavity (2) is provided with a hub cavity (21) at the end. The hub cavity (21) is provided with an assembly hole (22). The bottom of the upper mold base (3) is provided with a blade cavity (2), a hub cavity (21), a first channel (12) and a second channel (13) corresponding to the lower mold base (1). An assembly column (32) is fixedly provided in the hub cavity (21) of the upper mold base (3). The assembly column (32) is adapted to the assembly hole (22).

3. The folding propeller blade forming mold according to claim 1, characterized in that, One end of the closed block (42) is rotatably engaged with the control seat (4) via a pivot (421). The control seat (4) has an installation cavity (44) inside. A pair of drive shafts (45) are symmetrically mounted in the center of the installation cavity (44). The bottom of the pivot (421) extends into the installation cavity (44) and is connected to the drive shafts (45) via a drive belt (422). Drive gears (451) are fixedly sleeved on the drive shafts (45).

4. The folding propeller blade forming mold according to claim 3, characterized in that, A set of longitudinal toothed plates (48) arranged in a centrally symmetrical manner are linearly slidably installed at the bottom of the mounting cavity (44). A micro motor (47) is fixedly installed at the center of the bottom of the control seat (4). A drive tooth (471) is fixedly connected to the output end of the micro motor (47). The drive tooth (471) is located between the two longitudinal toothed plates (48) and meshes with one side of the two longitudinal toothed plates (48) at the same time. The other side of the longitudinal toothed plate (48) meshes with the corresponding transmission tooth (451).

5. A folding propeller blade forming mold according to claim 4, characterized in that, The locking block (43) is fixedly provided with a stop block (431) at its tail. The control seat (4) is provided with a movable groove. The stop block (431) is movably installed in the movable groove. A compression spring (432) is provided between the stop block (431) and the side wall of the movable groove. A guide post (433) is fixedly connected to the stop block (431). The guide post (433) is slidably installed in the corresponding sliding groove. An L-shaped rod (434) is fixedly connected to the bottom of the stop block (431). The L-shaped rod (434) is movably installed in the through groove at the bottom of the movable groove. The L-shaped rod (434) extends into the mounting cavity (44) and is fixedly connected to a transverse toothed plate (435) at its end.

6. A folding propeller blade forming mold according to claim 5, characterized in that, A set of centrally symmetrical transmission shafts (46) are rotatably installed in the mounting cavity (44). An upper gear (461) and a lower gear (462) are respectively sleeved on the transmission shafts (46). The upper gear (461) meshes with the horizontal gear plate (435). An extension gear plate (481) is fixed at the upper end of the longitudinal gear plate (48) along the straight direction. The extension gear plate (481) and the horizontal gear plate (435) are staggered and vertically arranged. The lower gear (462) meshes with the extension gear plate (481).

7. The folding propeller blade forming mold according to claim 1, characterized in that, The two ends of the connecting channel (41) are fixed with blocking parts (411). The sealing block (42) abuts against the blocking part (411) after rotating 90°. The side wall of the connecting channel (41) is provided with a receiving groove (412). The sealing block (42) is adapted to be embedded into the corresponding receiving groove (412) after rotating 90° in the opposite direction.

8. A folding propeller blade forming mold according to claim 1, characterized in that, The lower mold base (1) has positioning holes (11) distributed at the four corners of its upper end, and the upper mold base (3) has positioning pins (31) distributed at the four corners of its bottom end. The positioning pins (31) and positioning holes (11) are arranged in a one-to-one correspondence.

9. A method of using a folding propeller blade forming mold, comprising using the folding propeller blade forming mold as described in claim 1, characterized in that, Includes the following steps: Step 1: Mold pretreatment, remove impurities from the lower mold base (1) and the upper mold base (3), and spray release agent evenly in the cavity. Then lay the cut carbon fiber prepreg into the corresponding cavity. Step 2: Hot pressing molding, press the upper mold base (3) down to make it close with the lower mold base (1), start pressurizing and heating, and make the resin matrix in the prepreg begin to melt and flow through hot pressing; Step 3: Opening and closing control. When the control seat (4) controls the connection channel (41) to open, the molten resin will flow in all cavities. When the control connection channel (41) is closed, the molten resin will flow independently in each cavity. Step 4: Cooling and demolding. After the molten material is hot-pressed into shape, the pressure is released and the temperature is lowered. The clamps are then used to demold the material.

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