A method for forming ducts for unmanned aerial vehicles

Abstract

This invention relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV duct forming method comprising the following steps: A) forming a front stator using a first mold, a rear stator using a second mold, and a support frame using a third mold; a first mounting plate is formed at one end of the front stator; a second mounting plate is formed at one end of the rear stator; B) stacking the second mounting plate on the first mounting plate; C) forming the inner surface of the duct using the third mold, and forming an adhesive line extending upwards along the turning line of the inner surface of the duct; D) forming the outer surface of the duct in a fourth mold, and bonding the outer surface of the duct to the adhesive line of the inner surface of the duct. This invention significantly enhances the strength of the fixed support by dividing the fixed support into a front stator and a rear stator; furthermore, by placing the adhesive line between the inner and outer surfaces of the UAV duct above the turning line of the UAV duct, the stability of the UAV duct is strengthened.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically to a method for forming a UAV duct. Background Technology

[0002] The drone industry is experiencing a period of rapid development, with technological innovations emerging one after another. With the full opening of China's low-altitude airspace, the application of drones has expanded beyond the military field, increasingly being used for aerial photography, surveying, logistics transportation, emergency material airdrops, agricultural and forestry spraying, and more.

[0003] The advantages of ducted rotor drones are: 1. High aerodynamic efficiency, with thrust about 40% higher than that of open rotors under the same power input conditions; 2. Significantly improved safety in the event of a collision because the high-speed rotating rotor is enclosed by the duct; 3. Better flight stability because the rotor is not affected by crosswinds due to the duct enclosure.

[0004] However, since drones are manufactured using skin, the thickness of the mounting bracket for the motor is the same as the thickness of the skin. It is difficult to increase the thickness of the skin during the molding process, thus failing to enhance the strength and stability of the duct.

[0005] In the manufacturing process of drone ducts, the outer and inner surface skins are manufactured separately using molds, and then the outer and inner surface skins are combined to form the drone duct. Currently, the outer and inner surface skins are bonded together by bonding the bottom of the outer surface skin to the bottom of the inner surface skin, so that the bonding line of the drone duct coincides with the turning line of the drone duct. However, since the turning line of the drone is subjected to strong wind pressure during use, it can easily affect the stability of the drone. Summary of the Invention

[0006] The purpose of this invention is to address the aforementioned shortcomings in the prior art by providing a method for forming ductwork for unmanned aerial vehicles (UAVs) that offers high strength.

[0007] The objective of this invention is achieved through the following technical solution: a method for forming a duct for an unmanned aerial vehicle (UAV), comprising the following steps:

[0008] A. The front stator is formed using a first mold, the rear stator is formed using a second mold, and the support frame is formed using a third mold; a first mounting plate is formed at one end of the front stator; a second mounting plate is formed at one end of the rear stator.

[0009] B. Stack the second mounting plate on the first mounting plate; and fix the second mounting plate and the first mounting plate together to form a fixed bracket;

[0010] C. The inner surface of the culvert is formed using a third mold, and an adhesive line is formed by extending upward along the turning line of the inner surface of the culvert; the height of the adhesive line is higher than that of the turning line.

[0011] D. Place the inner surface of the culvert, the fixed bracket, and the support frame into the fourth mold; form the outer surface of the culvert in the fourth mold, and bond the adhesive line between the outer surface of the culvert and the inner surface of the culvert.

[0012] The present invention is further configured such that the first mounting plate is provided with a first heat dissipation hole; and the second mounting plate is provided with a second heat dissipation hole that cooperates with the first heat dissipation hole.

[0013] The first mounting plate is provided with a first mounting hole; the second mounting plate is provided with a second mounting hole that mates with the first mounting hole;

[0014] The support frame includes a first support frame, a second support frame, a third support frame, and a fourth support frame;

[0015] The first support frame and the second support frame are respectively located at the left and right ends of the fixed bracket; the third support frame and the fourth support frame are respectively located at the upper and lower ends of the fixed bracket.

[0016] The present invention is further configured such that the third mold includes a first inner mold, a first outer mold, and a first bottom mold; the top of the first bottom mold is recessed inward to form a first recess; the bottom of the first inner mold is disposed in the first recess; and the bottom of the first recess abuts against the outer wall of the first inner mold to form a forming groove.

[0017] The first outer mold is sleeved outside the first inner mold; the bottom of the first outer mold is provided in the forming groove; a first forming cavity is formed between the outer wall of the first outer mold in the forming groove, the outer wall of the inner mold, the inner wall of the outer mold, and the forming groove.

[0018] The present invention is further configured such that step C includes the following steps:

[0019] c1: Place the first inner mold in the first recess of the first bottom mold, and make the outer wall of the bottom of the first inner mold fit tightly against the bottom of the first recess, so that a molding groove is formed between the outer wall of the bottom of the first inner mold and the first recess.

[0020] c2: Place the skin on the outer surface of the first inner mold and the forming groove, then fit the first outer mold over the first inner mold and place the first outer mold into the forming groove, so that the skin is located in the first forming cavity between the outer wall of the first outer mold in the forming groove, the outer wall of the first inner mold, the inner wall of the first outer mold, and the forming groove.

[0021] The present invention is further configured such that the outer wall of the first inner mold is provided with a recessed hole.

[0022] The present invention is further configured such that the fourth mold includes a second bottom mold, a second inner mold, a second front mold, and a second rear mold; the top of the second bottom mold is recessed inward to form a second recess; the bottom of the second inner mold is disposed in the second recess; the bottom of the second recess abuts against the outer wall of the second inner mold.

[0023] The second front mold and the second rear mold are both located on the top of the second bottom mold; after the second front mold and the second rear mold are closed, they are fitted outside the second inner mold; a second molding cavity is formed between the inner wall of the second front mold, the inner wall of the second rear mold, the inner wall of the second recess, and the outer wall of the second inner mold.

[0024] The present invention is further configured such that step D includes the following steps:

[0025] d1: Place the second inner mold in the second recess of the second bottom mold, and make the outer wall of the bottom of the second inner mold fit tightly against the bottom of the second recess;

[0026] d2: Place the inner surface of the duct on the outer wall of the second inner mold and in the second recess, such that the turning line of the inner surface of the duct is located at the bottom of the second recess and the bonding line of the inner surface of the duct is located at the top of the second recess.

[0027] d3: Place the support frame and the fixed bracket on top of the second inner mold, so that the support frame is between the inner wall of the inner surface of the duct and the outer wall of the fixed bracket.

[0028] d4: Place the skin on the inner wall of the second front mold and the inner wall of the second rear mold, and then close the second front mold and the second rear mold.

[0029] d5: The outer surface of the culvert and the inner surface of the culvert are bonded together at the bonding line on the inner surface of the culvert.

[0030] The beneficial effects of the present invention are as follows: By dividing the fixed bracket into two parts, a front stator and a rear stator, and then stacking the first mounting plate of the front stator and the second mounting plate of the rear stator together, the strength of the fixed bracket can be greatly enhanced, thereby ensuring the stability of the UAV; in addition, by placing the bonding line between the inner surface and the outer surface of the UAV duct above the turning line of the UAV duct, the stability of the UAV duct can be strengthened. Attached Figure Description

[0031] The invention will be further illustrated with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the invention. For those skilled in the art, other drawings can be obtained based on the following drawings without any creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of the duct of the UAV of the present invention;

[0033] Figure 2 This is an exploded view of the structure of the UAV duct after concealing the inner and outer surfaces of the duct.

[0034] Figure 3 A schematic diagram of the structure of the third mold of this invention;

[0035] Figure 4 This is a schematic diagram of the structure of the third mold of the present invention after the first outer mold is hidden;

[0036] Figure 5 This is an exploded view of the structure of the third mold of the present invention;

[0037] Figure 6 This is a cross-sectional view of the third mold of the present invention;

[0038] Figure 7 This is a schematic diagram of the structure of the inner surface of the culvert of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of the fourth mold of the present invention;

[0040] Figure 9 This is an exploded view of the structure of the fourth mold of the present invention;

[0041] Figure 10 This is a cross-sectional view of the fourth mold of the present invention;

[0042] Figure 11 This is a cross-sectional view of the fourth mold of the present invention in conjunction with the inner surface of the UAV duct and the outer surface of the UAV duct;

[0043] Wherein: 12, fixed bracket; 121, front stator; 122, rear stator; 131, first support frame; 132, second support frame; 133, third support frame; 134, fourth support frame; 141, first mounting plate; 142, second mounting plate; 151, first heat dissipation hole; 152, second heat dissipation hole; 161, first mounting hole; 162, second mounting hole; 21, first inner mold; 211, recessed hole; 22, first outer mold; 23, first bottom mold; 231, first recess; 24, forming groove; 25, first forming cavity; 3, duct inner surface; 371, turning line; 372, adhesive line; 41, second bottom mold; 411, second recess; 42, second inner mold; 43, second front mold; 44, second rear mold; 45, second forming cavity; 5, duct outer surface. Detailed Implementation

[0044] The present invention will be further described in conjunction with the following embodiments.

[0045] Depend on Figures 1 to 11 As shown in this embodiment, a method for forming a duct for an unmanned aerial vehicle (UAV) includes the following steps:

[0046] A. The front stator 121 is formed using a first mold, the rear stator 122 is formed using a second mold, and the support frame is formed using a third mold; a first mounting plate 141 is formed at one end of the front stator 121; a second mounting plate 142 is formed at one end of the rear stator 122.

[0047] B. Stack the second mounting plate 142 on the first mounting plate 141; and fix the second mounting plate 142 and the first mounting plate 141 together to form a fixed bracket 12;

[0048] C. The inner surface 3 of the culvert is formed using a third mold, and an adhesive line 372 is formed by extending upward from the turning line 371 of the inner surface 3 of the culvert; the height of the adhesive line 372 is higher than that of the turning line 371.

[0049] D. Place the inner surface 3 of the culvert, the fixed bracket 12 and the support frame into the fourth mold respectively; form the outer surface 5 of the culvert in the fourth mold, and bond the outer surface 5 of the culvert to the adhesive line 372 of the inner surface 3 of the culvert.

[0050] Specifically, in this embodiment, by using the above-described molding method, the fixed bracket 12 is divided into two parts: a front stator 121 and a rear stator 122. The first mounting plate 141 of the front stator 121 and the second mounting plate 142 of the rear stator 122 are then stacked together, which greatly enhances the strength of the fixed bracket 12, thereby ensuring the stability of the drone. Furthermore, the support frame further strengthens the stability of the drone. Since the drone is manufactured using a skin, the thickness of the fixed bracket 12 is the same as the thickness of the skin. In this embodiment, by stacking the first mounting plate 141 of the front stator 121 and the second mounting plate 142 of the rear stator 122 together, it is equivalent to stacking two skins together, thus greatly enhancing the strength of the fixed bracket 12 and ensuring the stability of the drone. Additionally, in this embodiment, by placing the bonding line 372 between the inner surface 3 and the outer surface 5 of the drone duct above the turning line 371 of the drone duct, the stability of the drone duct is enhanced.

[0051] The duct forming method for a drone described in this embodiment includes a first mounting plate 141 with a first heat dissipation hole 151 and a second mounting plate 142 with a second heat dissipation hole 152 that cooperates with the first heat dissipation hole 151. Specifically, the above arrangement enables heat dissipation for the motor on the first mounting plate 141.

[0052] The first mounting plate 141 is provided with a first mounting hole 161; the second mounting plate 142 is provided with a second mounting hole 162 that mates with the first mounting hole 161; specifically, the above arrangement enables the motor to be mounted on the first mounting plate 141.

[0053] The support frame includes a first support frame 131, a second support frame 132, a third support frame 133, and a fourth support frame 134; the above configuration can further enhance the stability of the UAV.

[0054] The first support frame 131 and the second support frame 132 are respectively located at the left and right ends of the fixed bracket 12; the third support frame 133 and the fourth support frame 134 are respectively located at the upper and lower ends of the fixed bracket 12. This arrangement further enhances the stability of the drone.

[0055] The method for forming a duct for a drone described in this embodiment includes a third mold comprising a first inner mold 21, a first outer mold 22, and a first bottom mold 23; the top of the first bottom mold 23 is recessed inward to form a first recess 231; the bottom of the first inner mold 21 is disposed in the first recess 231; and the bottom of the first recess 231 abuts against the outer wall of the first inner mold 21 to form a forming groove 24.

[0056] The first outer mold 22 is sleeved outside the first inner mold 21; the bottom of the first outer mold 22 is provided in the forming groove 24; a first forming cavity 25 is formed between the outer wall of the first outer mold 22 in the forming groove 24, the outer wall of the inner mold, the inner wall of the outer mold, and the forming groove 24.

[0057] The duct forming method for unmanned aerial vehicles (UAVs) described in this embodiment includes the following steps in step C:

[0058] c1: Place the first inner mold 21 in the first recess 231 of the first bottom mold 23, and make the outer wall of the bottom of the first inner mold 21 fit tightly against the bottom of the first recess 231, so that a forming groove 24 is formed between the outer wall of the bottom of the first inner mold 21 and the first recess 231.

[0059] c2: Place the skin on the outer surface of the first inner mold 21 and at the forming groove 24. Then, fit the first outer mold 22 over the first inner mold 21 and place the first outer mold 22 into the forming groove 24, so that the skin is located in the first forming cavity 25 between the outer wall of the first outer mold 22 in the forming groove 24, the outer wall of the first inner mold 21, the inner wall of the first outer mold 22, and the forming groove 24; after the inner surface 3 of the UAV duct is formed, the following is obtained: Figure 7 The semi-finished product shown; it can be seen that the bonding line 372 between the inner surface 3 and the outer surface 5 of the drone duct is above the turning line 371 of the drone duct, which can enhance the stability of the drone duct.

[0060] In this embodiment, a method for forming a drone duct is described, wherein the outer wall of the first inner mold 21 is provided with a recess 211. Specifically, by providing a recess 211 on the outer wall of the first inner mold 21, the inner wall of the inner surface 3 of the drone duct formed by the third mold has the same recess 211. By providing this recess 211, during step D, the support frame can abut against the recess 211 on the inner surface 3 of the duct and the outer wall of the fixed bracket 12. Due to the provision of the recess 211, the distance between the recess 211 on the inner surface 3 of the duct and the outer surface 5 of the duct can be reduced, thereby reducing the distance between the support frame and the outer surface 5 of the duct, and thus further improving the stability of the drone.

[0061] The method for forming a duct for a drone described in this embodiment includes a fourth mold comprising a second bottom mold 41, a second inner mold 42, a second front mold 43, and a second rear mold 44; the top of the second bottom mold 41 is recessed inward to form a second recess 411; the bottom of the second inner mold 42 is disposed in the second recess 411; the bottom of the second recess 411 abuts against the outer wall of the second inner mold 42.

[0062] The second front mold 43 and the second rear mold 44 are both located on the top of the second bottom mold 41; after the second front mold 43 and the second rear mold 44 are closed, they are fitted outside the second inner mold 42; a second molding cavity 45 is formed between the inner wall of the second front mold 43, the inner wall of the second rear mold 44, the inner wall of the second recess 411 and the outer wall of the second inner mold 42.

[0063] The duct forming method for unmanned aerial vehicles (UAVs) described in this embodiment includes the following steps in step D:

[0064] d1: Place the second inner mold 42 in the second recess 411 of the second bottom mold 41, and make the outer wall of the bottom of the second inner mold 42 fit tightly against the bottom of the second recess 411;

[0065] d2: Place the inner surface 3 of the duct on the outer wall of the second inner mold 42 and in the second recess 411, such that the turning line 371 of the inner surface 3 of the duct is located at the bottom of the second recess 411 and the bonding line 372 of the inner surface 3 of the duct is located at the top of the second recess 411.

[0066] d3: Place the support frame and the fixed bracket 12 on top of the second inner mold 42, so that the support frame is between the inner wall of the inner surface 3 of the duct and the outer wall of the fixed bracket 12.

[0067] d4: Place the skin on the inner wall of the second front mold 43 and the inner wall of the second rear mold 44, and then close the second front mold 43 and the second rear mold 44.

[0068] d5: The outer surface 5 of the culvert and the inner surface 3 of the culvert are bonded together at the bonding line 372 of the inner surface 3 of the culvert.

[0069] Specifically, when manufacturing the combination of the outer surface 5 and the inner surface 3 of the drone duct, the second inner mold 42 is first placed in the second recess 411 of the second bottom mold 41, and the outer wall of the bottom of the second inner mold 42 is made to fit tightly against the bottom of the second recess 411. At this time, the junction of the second recess 411 and the outer wall of the bottom of the second inner mold 42 is the turning line 371 of the drone duct after forming. Then, the inner surface 3 of the drone duct is placed on the outer wall of the inner second mold and in the second recess 411. At this time, the turning line 3 of the drone duct is formed. At the junction of the second recess 411 and the outer wall of the bottom of the second inner mold 42, the adhesive line 372 of the inner surface 3 of the UAV duct is at the top of the second recess 411; then the skin of the outer surface 5 of the UAV duct is placed on the second front mold 43 and the second rear mold 44 respectively, and then the second front mold 43 and the second rear mold 44 are closed, so that the skin of the outer surface 5 of the UAV duct and the skin of the inner surface 3 of the UAV duct are bonded together at the top of the second recess 411, thereby enhancing the stability of the UAV duct.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A method for forming a duct for an unmanned aerial vehicle (UAV), characterized in that: Includes the following steps: A. The front stator (121) is formed using a first mold, the rear stator (122) is formed using a second mold, and the support frame is formed using a third mold; a first mounting plate (141) is formed at one end of the front stator (121); a second mounting plate (142) is formed at one end of the rear stator (122); B. Stack the second mounting plate (142) on the first mounting plate (141); and fix the second mounting plate (142) and the first mounting plate (141) together to form a fixed bracket (12); C. The inner surface (3) of the culvert is formed using a third mold, and an adhesive line (372) is formed extending upward from the turning line (371) of the inner surface (3) of the culvert; the height of the adhesive line (372) is higher than that of the turning line (371). D. Place the inner surface (3), the fixed bracket (12) and the support frame into the fourth mold respectively; form the outer surface (5) of the culvert in the fourth mold, and bond the outer surface (5) of the culvert to the adhesive line (372) of the inner surface (3).

2. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 1, characterized in that: The first mounting plate (141) is provided with a first heat dissipation hole (151); the second mounting plate (142) is provided with a second heat dissipation hole (152) that cooperates with the first heat dissipation hole (151); The first mounting plate (141) is provided with a first mounting hole (161); the second mounting plate (142) is provided with a second mounting hole (162) that mates with the first mounting hole (161); The support frame includes a first support frame (131), a second support frame (132), a third support frame (133), and a fourth support frame (134); The first support frame (131) and the second support frame (132) are respectively located at the left and right ends of the fixed bracket (12); the third support frame (133) and the fourth support frame (134) are respectively located at the upper and lower ends of the fixed bracket (12).

3. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 1, characterized in that: The third mold includes a first inner mold (21), a first outer mold (22), and a first bottom mold (23); the top of the first bottom mold (23) is recessed inward to form a first recess (231); the bottom of the first inner mold (21) is located in the first recess (231); the bottom of the first recess (231) abuts against the outer wall of the first inner mold (21) to form a forming groove (24); The first outer mold (22) is sleeved outside the first inner mold (21); the bottom of the first outer mold (22) is located in the forming groove (24); a first forming cavity (25) is formed between the outer wall of the first outer mold (22) in the forming groove (24), the outer wall of the first inner mold (21), the inner wall of the first outer mold (22), and the forming groove (24).

4. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 3, characterized in that: Step C includes the following steps: c1: Place the first inner mold (21) in the first recess (231) of the first bottom mold (23), and make the outer wall of the bottom of the first inner mold (21) fit tightly against the bottom of the first recess (231), so that a forming groove (24) is formed between the outer wall of the bottom of the first inner mold (21) and the first recess (231). c2: Place the skin on the outer surface of the first inner mold (21) and the forming groove (24), then put the first outer mold (22) on the outside of the first inner mold (21) and put the first outer mold (22) into the forming groove (24), so that the skin is located in the first forming cavity (25) between the outer wall of the first outer mold (22) in the forming groove (24), the outer wall of the first inner mold (21), the inner wall of the first outer mold (22) and the forming groove (24).

5. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 3, characterized in that: The outer wall of the first inner mold (21) is provided with a recess (211).

6. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 1, characterized in that: The fourth mold includes a second bottom mold (41), a second inner mold (42), a second front mold (43), and a second rear mold (44); the top of the second bottom mold (41) is recessed inward to form a second recess (411); the bottom of the second inner mold (42) is located in the second recess (411); the bottom of the second recess (411) abuts against the outer wall of the second inner mold (42); The second front mold (43) and the second rear mold (44) are both located on the top of the second bottom mold (41); after the second front mold (43) and the second rear mold (44) are closed, they are fitted outside the second inner mold (42); a second molding cavity (45) is formed between the inner wall of the second front mold (43), the inner wall of the second rear mold (44), the inner wall of the second recess (411), and the outer wall of the second inner mold (42).

7. The method for forming a duct for an unmanned aerial vehicle (UAV) according to claim 1, characterized in that: Step D includes the following steps: d1: Place the second inner mold (42) in the second recess (411) of the second bottom mold (41), and make the outer wall of the bottom of the second inner mold (42) fit tightly against the bottom of the second recess (411); d2: Place the inner surface (3) of the duct on the outer wall of the second inner mold (42) and in the second recess (411), such that the turning line (371) of the inner surface (3) of the duct is located at the bottom of the second recess (411), and the bonding line (372) of the inner surface (3) of the duct is located at the top of the second recess (411). d3: Place the support frame and the fixed bracket (12) on top of the second inner mold (42), such that the support frame is between the inner wall of the inner surface (3) of the duct and the outer wall of the fixed bracket (12); d4: Place the skin on the inner wall of the second front mold (43) and the inner wall of the second rear mold (44), and close the second front mold (43) and the second rear mold (44); d5: The outer surface (5) of the culvert and the inner surface (3) of the culvert are bonded together at the bonding line (372) of the inner surface (3).

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