Compression molding device for wings of unmanned aerial vehicle

Abstract

The invention relates to the field of general forming of plastic state substances, and provides a compression molding device for unmanned aerial vehicle wings, the compression molding device comprises an upper mold and a lower mold, grooves are formed in the top of the upper mold and the bottom of the lower mold, and the two ends of the upper mold are connected with the two ends of the lower mold through connecting pieces; the bottom of the upper mold and the top of the lower mold are each provided with an arc-shaped face with the same shape as an unmanned aerial vehicle wing, and copper sheets are embedded into the bottom of the upper mold and the top of the lower mold. During heating, heat can be guided onto the copper sheet through the arranged heat conduction copper plate and the arranged heat conduction copper column, the copper sheet is heated, materials in the mold are heated through the copper sheet, then the heating effect is improved, meanwhile, air is directly blown to the heat conduction copper plate during heat dissipation, heat dissipation can be conducted on the copper sheet, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the general field of forming of plastic state materials, and in particular to a compression molding device for unmanned aerial vehicle wings. Background Art

[0002] In order to improve the performance and market competitiveness of drones, the key is to reduce their structural weight, while enhancing the reliability, maintainability, durability and service life of the structure, and strive to reduce the overall life cycle cost. The cutting-edge technology in the aviation field has been fully verified, and the application of composite materials is one of the effective ways to achieve these goals. At present, many modern drone wings use composite materials as the core load-bearing structure. This design reduces the use of standard assembly parts, thereby significantly improving the overall performance of drones.

[0003] In the manufacturing process of drone wings, the compression molding device plays a vital role. The device completes the processing process by placing the material inside it, then placing it in a high-temperature environment, and taking it out after a certain period of time. However, the existing compression molding device has deficiencies in thermal conductivity, resulting in a slow curing process of the internal material and low heat dissipation efficiency, which in turn affects the overall production efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a molding device for UAV wings to solve the above problems in the prior art.

[0005] To achieve the above-mentioned object, the present invention provides a compression molding device for drone wings, comprising: an upper mold and a lower mold, the top of the upper mold and the bottom of the lower mold are both provided with grooves, the two ends of the upper mold and the two ends of the lower mold are connected by a connector, the bottom of the upper mold and the top of the lower mold are both provided with an arc surface with the same shape as the drone wing, and the bottom of the upper mold and the top of the lower mold are both embedded with a copper sheet, and the shape of the copper sheet is the same as that of the arc surface; A plurality of heat-conducting copper pillars are provided on the top of the upper mold and the bottom of the lower mold, one end of each of the heat-conducting copper pillars is in contact with the copper sheet, five heat-conducting copper plates are arranged inside the groove, and each of the heat-conducting copper plates is in contact with three heat-conducting copper pillars distributed along the width direction of the groove.

[0006] Further, the upper mold and the lower mold are both provided with an installation cavity, a first rotating column is rotatably provided on one side of the installation cavity, and a second rotating column is rotatably provided on the other side of the installation cavity, the heat-conducting copper plate is slidably arranged inside the groove, and the heat-conducting copper plate is connected to the first rotating column; Two second rotating shafts are rotatably provided at both ends of the upper mold and the lower mold, wherein one end of the two second rotating shafts located on one side of the installation cavity extends into the interior of the installation cavity and is spaced apart and connected to the two ends of the first rotating column, one end of the two second rotating shafts located on the other side of the installation cavity is spaced apart and connected to the two ends of the second rotating column, and the other end of the second rotating shaft is connected to the connecting piece.

[0007] Further, both ends of the upper mold and the lower mold are provided with a storage box, and the connecting member includes a first hinge rod and a second hinge rod; A first hinge rod and a second hinge rod are arranged inside each of the storage boxes, one end of the first hinge rod and the second hinge rod are fixedly connected to the other end of the second rotating shaft, and the first hinge rod and the second hinge rod are cross-arranged; The other end of the first hinge is hinged to the other end of the second hinge opposite to the vertical direction, and the other end of the second hinge is hinged to the other end of the first hinge opposite to the vertical direction.

[0008] Furthermore, a third gear is installed at one end of the second rotating shaft, and second gears are arranged at both ends of the first rotating column and the second rotating column, and the third gear is meshingly connected with the second gear.

[0009] Furthermore, a slide groove is provided on one side wall of the groove, and the slide groove is connected to the installation cavity. Five first threaded cylinders are provided on the first rotating column, and a connecting block is provided on the first threaded cylinder. Side plates are provided at both ends of the heat-conducting copper plate, and a first rotating shaft is provided in the middle of one of the side plates, and the first rotating shaft passes through the slide groove and is connected to the connecting block.

[0010] Furthermore, one end of the first rotating shaft passes through the top of the connecting block, one end of the first rotating shaft is connected to a first gear, five groups of gear teeth are arranged on the top of one side of the groove, and the gear teeth are located on one side of the connecting block.

[0011] Further, a plurality of connecting strips are slidably arranged at the bottom of the groove, two opposite connecting strips form a group, and a total of five groups of connecting strips are arranged inside the groove, three arc blocks are arranged on one side of each connecting strip, a third gas transmission channel is opened inside the connecting strip and the arc block, and a spray hole is opened on one side of the arc block; Ten second threaded cylinders are arranged on the second rotating column, and the rotation directions of two opposite second threaded cylinders are opposite. A transverse plate is connected to the second threaded cylinder, and one end of the connecting strip extends to the inside of the installation cavity and is connected to the transverse plate.

[0012] Further, a movable plate is embedded on both sides of the upper mold and the lower mold, an air inlet is provided on one side of the movable plate, a first gas supply channel is provided inside the movable plate, a sleeve copper plate is provided at one end of the transverse plate, a movable copper plate is slidably provided inside the sleeve copper plate, a second gas supply channel is provided inside the transverse plate, one end of the movable copper plate is slidably connected to the movable plate, the top of one end of the movable copper plate is connected to the first gas supply channel through a hose, and the first gas supply channel, the sleeve copper plate, the movable copper plate, the second gas supply channel and the third gas supply channel are connected to each other; A heat dissipation fin is disposed at the bottom of the movable plate, and one end of the heat dissipation fin extends to the interior of the first air delivery channel.

[0013] Furthermore, three racks are arranged on the other side of the movable plate, and three fourth gears are arranged on the second rotating column at positions vertically opposite to the racks, and the racks are meshedly connected with the fourth gears.

[0014] Further, two adjacent connecting strips are hinged with hinged plates, and the tops of the two hinged plates are hinged with an air outlet plate, and the tops of the air outlet plates are provided with a plurality of air outlet holes, and a hose is provided inside the hinged plate, and one end of the hose is connected to the air outlet plate, and three delivery pipes are arranged on one side of the hinged plate, and the other end of the hose is connected to the delivery pipe; A through hole is provided on the other side of the connecting strip, a moving cylinder is slidably arranged inside the through hole, one end of the moving cylinder extends into the interior of the connecting strip, a sealing disk is provided at one end of the moving cylinder, a plurality of first air grooves are provided on the outer wall of the moving cylinder, and a plurality of second air grooves are provided at one end of the delivery pipe; A spring is arranged inside the connecting strip, and one end of the spring is connected to the sealing disk.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. During heating, the heat can be introduced into the copper sheet through the heat-conducting copper plate and the heat-conducting copper column, and the copper sheet is heated, and the material in the mold is heated through the copper sheet, thereby improving the heating effect. At the same time, when dissipating heat, the heat-conducting copper plate can be directly blown to dissipate the heat of the copper sheet, thereby improving the efficiency of heat dissipation; Second, when the upper mold is separated from the lower mold, the first hinge and the second hinge drive the second gear and the first rotating column and the second rotating column to rotate. When the first rotating column rotates, the first threaded cylinder on its surface rotates to drive the connecting block to move, and the side plate and the heat-conducting copper plate are driven to move through the connecting block, and the heat-conducting copper plate is moved to one side of the heat-conducting copper column so that it is no longer connected to the heat-conducting copper column and does not cover the heat-conducting copper column, which is convenient for heat dissipation of the heat-conducting copper column and the heat-conducting copper plate. When the upper mold and the lower mold are closed, the heat-conducting copper plate is reset and connected to the heat-conducting copper column; 3. When the upper mold and the lower mold are separated, the second rotating column is driven to rotate through the connecting piece, and the second threaded cylinder is set to drive the two relative connecting strips to move relatively close, so that the arc block on the connecting strip approaches and covers the heat-conducting copper column, and then the pipeline is used to access the air inlet on the movable plate, and then the gas is input into the inside of the air inlet. The gas passes through the first gas transmission channel, the sleeve copper plate, the movable copper plate, and enters the inside of the second gas transmission channel, and then sprays to the heat-conducting copper column through the spray hole, so as to cool the heat-conducting copper column, and then cool the copper sheet and the material; 4. When the heat-conducting copper plate moves toward one side of the heat-conducting copper column, the first gear at one end of the first rotating shaft meshes with the gear teeth, and the first rotating shaft rotates through the continuous movement of the heat-conducting copper plate, and the heat-conducting copper plate is driven by the first rotating shaft to rotate and turn over, so as to facilitate heat dissipation; 5. When the second rotating column rotates and the two connecting bars move relative to each other, the fourth gear is rotated to drive the rack to move outward, thereby driving the movable plate to move outward, so that the movable plate moves out of the interior of the upper mold and the lower mold, making it convenient for the staff to supply air to the interior, and at the same time, the heat dissipation fins are moved out of the interior of the upper mold and the lower mold, so as to accelerate the heat dissipation of the copper sheet through the heat dissipation fins.

[0016] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a second three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of a third three-dimensional structure of the present invention; Figure 4 It is a structural schematic diagram of the connecting member in the present invention; Figure 5 It is a structural schematic diagram of the first rotating column in the present invention; Figure 6 It is a structural schematic diagram of the connection block in the present invention; Figure 7 It is a partial structural diagram of the first rotating column in the present invention; Figure 8 is a side cross-sectional view of the upper mold in the present invention; Fig. 9 It is a schematic diagram of the structure of the connecting strip in the present invention; Fig.10 It is a schematic structural diagram of the second rotating column in the present invention; Fig.11 It is a partial structural schematic diagram of the upper mold in the present invention; Fig.12 is a cross-sectional view of the movable plate and the horizontal plate in the present invention; Fig.13 is a cross-sectional view of a connecting strip in the present invention; Fig.14 It is a cross-sectional view of the moving cylinder and the conveying pipe in the present invention.

[0018] In the figure: 1, upper mold; 2, lower mold; 3, groove; 4, moving plate; 5, heat-conducting copper plate; 6, air outlet; 7, air outlet plate; 8, storage box; 9, connecting piece; 901, first hinge; 902, second hinge; 10, air inlet; 11, first rotating shaft; 12, first rotating column; 13, connecting block; 14, first gear; 15, first threaded cylinder; 16, second gear; 17, third gear; 18, second rotating shaft; 19, installation cavity; 20, hinge plate; 21, side plate; 22. Connecting strip; 23. Connecting pipe; 24. Delivery pipe; 25. Heat-conducting copper column; 26. Arc block; 27. Second rotating column; 28. Second threaded cylinder; 29. ​​Rack; 30. Cross plate; 31. Socketed copper plate; 32. Moving copper plate; 33. Heat dissipation fins; 34. First gas transmission channel; 35. Second gas transmission channel; 36. Third gas transmission channel; 37. First gas groove; 38. Second gas groove; 39. Moving cylinder; 40. Sealing disk; 41. Spring; 42. Through hole; 43. Gear teeth. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0020] Reference Figure 1-14 As shown, a compression molding device for drone wings comprises: an upper mold 1 and a lower mold 2, a groove 3 is provided at the top of the upper mold 1 and the bottom of the lower mold 2, two ends of the upper mold 1 and two ends of the lower mold 2 are connected by a connector 9, the bottom of the upper mold 1 and the top of the lower mold 2 are provided with an arc surface with the same shape as the drone wing, and a copper sheet is embedded in the bottom of the upper mold 1 and the top of the lower mold 2, and the shape of the copper sheet is the same as the arc surface; A plurality of heat-conducting copper pillars 25 are disposed on the top of the upper mold 1 and the bottom of the lower mold 2. One end of each of the plurality of heat-conducting copper pillars 25 is in contact with the copper sheet. Five heat-conducting copper plates 5 are arranged inside the groove 3. Each heat-conducting copper plate 5 is in contact with three heat-conducting copper pillars 25 distributed along the width direction of the groove 3. The upper mold 1 and the lower mold 2 are both provided with a mounting cavity 19, a first rotating column 12 is rotatably provided on one side of the mounting cavity 19, and a second rotating column 27 is rotatably provided on the other side of the mounting cavity 19, and a heat-conducting copper plate 5 is slidably arranged inside the groove 3, and the heat-conducting copper plate 5 is connected to the first rotating column 12; Two second rotating shafts 18 are rotatably provided at both ends of the upper mold 1 and the lower mold 2, wherein one end of the two second rotating shafts 18 located on one side of the installation cavity 19 extends into the interior of the installation cavity 19 and is spaced apart and connected to the two ends of the first rotating column 12, and one end of the two second rotating shafts 18 located on the other side of the installation cavity 19 is spaced apart and connected to the two ends of the second rotating column 27, and the other end of the second rotating shaft 18 is connected to the connecting member 9.

[0021] A technical solution provided by the present invention, when in use, after the upper mold 1 and the lower mold 2 are closed, the mold is placed on a hot press, and then the mold is heated. During heating, heat can be introduced into the copper sheet through the provided heat-conducting copper plate 5 and the heat-conducting copper column 25, and the copper sheet is heated. The material in the mold is heated by the copper sheet, thereby improving the heating effect. At the same time, when dissipating heat, the heat-conducting copper plate 5 can be directly blown to dissipate the heat of the copper sheet, thereby improving the efficiency of heating and heat dissipation.

[0022] Preferably: both ends of the upper mold 1 and the lower mold 2 are provided with a storage box 8, and the connecting member 9 includes a first hinge rod 901 and a second hinge rod 902; Each storage box 8 is provided with a first hinge rod 901 and a second hinge rod 902, one end of the first hinge rod 901 and the second hinge rod 902 are fixedly connected to the other end of the second rotating shaft 18, and the first hinge rod 901 and the second hinge rod 902 are cross-arranged; The other end of the first hinge 901 is hinged to the other end of the second hinge 902 opposite in the vertical direction, and the other end of the second hinge 902 is hinged to the other end of the first hinge 901 opposite in the vertical direction.

[0023] Specifically, the upper mold 1 and the lower mold 2 are conveniently connected by the provided connecting piece 9 , and after the molds are closed, the connecting piece 9 is folded and enters the interior of the storage box 8 .

[0024] Preferably: a third gear 17 is installed at one end of the second rotating shaft 18, a second gear 16 is provided at both ends of the first rotating column 12 and the second rotating column 27, the third gear 17 is meshed and connected with the second gear 16, a slide groove is provided on one side wall of the groove 3, the slide groove is communicated with the installation cavity 19, five first threaded cylinders 15 are provided on the first rotating column 12, a connecting block 13 is provided on the first threaded cylinder 15, side plates 21 are provided at both ends of the heat-conducting copper plate 5, a first rotating shaft 11 is provided in the middle of one side plate 21, and the first rotating shaft 11 passes through the slide groove and is connected with the connecting block 13; One end of the first rotating shaft 11 passes through the top of the connecting block 13 . One end of the first rotating shaft 11 is connected to the first gear 14 . Five groups of gear teeth 43 are arranged on the top of one side of the groove 3 . The gear teeth 43 are located on one side of the connecting block 13 .

[0025] Specifically, after the mold is taken out after heating, when the upper mold 1 is separated from the lower mold 2, the connecting member 9 extends, and the second rotating shaft 18 is driven to rotate through the first hinge 901 and the second hinge 902, and the third gear 17 is driven to rotate through the second rotating shaft 18, and the second gear 16 and the first rotating column 12 and the second rotating column 27 are driven to rotate through the third gear 17. When the first rotating column 12 rotates, the first threaded cylinder 15 on its surface rotates, driving the connecting block 13 to move, and the side plate 21 and the heat-conducting copper plate 5 are driven to move through the connecting block 13, and the heat-conducting copper plate 5 is moved to one side of the heat-conducting copper column 25, so that it is no longer connected to the heat-conducting copper column 25 and does not cover the heat-conducting copper column 25, so as to facilitate the heat dissipation of the heat-conducting copper column 25 and the heat-conducting copper plate 5. When the upper mold 1 and the lower mold 2 are molded, the heat-conducting copper plate 5 is reset and connected to the heat-conducting copper column 25. When the heat-conducting copper plate 5 moves toward one side of the heat-conducting copper column 25, the first gear 14 at one end of the first rotating shaft 11 meshes with the gear 43, and the first rotating shaft 11 rotates through the continuous movement of the heat-conducting copper plate 5, and the heat-conducting copper plate 5 is driven by the first rotating shaft 11 to rotate and turn over, which facilitates heat dissipation.

[0026] Preferably: a plurality of connecting strips 22 are slidably arranged at the bottom of the groove 3, two opposite connecting strips 22 form a group, and a total of five groups of connecting strips 22 are arranged inside the groove 3, three arc blocks 26 are arranged on one side of each connecting strip 22, a third gas transmission channel 36 is opened inside the connecting strip 22 and the arc block 26, and a spray hole is opened on one side of the arc block 26; Ten second threaded cylinders 28 are arranged on the second rotating column 27. The rotation directions of two opposite second threaded cylinders 28 are opposite. A horizontal plate 30 is connected to the second threaded cylinders 28. One end of the connecting strip 22 extends to the inside of the installation cavity 19 and is connected to the horizontal plate 30. A movable plate 4 is embedded on both sides of the upper mold 1 and the lower mold 2, an air inlet 10 is provided on one side of the movable plate 4, a first gas delivery channel 34 is provided inside the movable plate 4, a sleeve copper plate 31 is provided at one end of the horizontal plate 30, a movable copper plate 32 is slidably provided inside the sleeve copper plate 31, a second gas delivery channel 35 is provided inside the horizontal plate 30, one end of the movable copper plate 32 is slidably connected to the movable plate 4, and the top of one end of the movable copper plate 32 is connected to the first gas delivery channel 34 through a hose, and the first gas delivery channel 34, the sleeve copper plate 31, the movable copper plate 32, the second gas delivery channel 35 and the third gas delivery channel 36 are connected to each other; A heat dissipation fin 33 is provided at the bottom of the movable plate 4, and one end of the heat dissipation fin 33 extends to the inside of the first gas delivery channel 34; Three racks 29 are disposed on the other side of the moving plate 4 , and three fourth gears are disposed on the second rotating column 27 , which are located vertically opposite to the racks 29 , and the racks 29 are meshedly connected with the fourth gears.

[0027] Specifically, when the upper mold 1 and the lower mold 2 are separated, the second rotating column 27 is driven to rotate through the connecting piece 9, and the second threaded cylinder 28 is set to drive the two relative connecting strips 22 to move relatively close, so that the arc block 26 on the connecting strip 22 approaches and covers the heat-conducting copper column 25, and then the pipeline is used to access the air inlet 10 on the movable plate 4, and then the gas is input into the inside of the air inlet 10, and the gas enters the inside of the second gas delivery channel 35 through the first gas delivery channel 34, the sleeve copper plate 31, and the movable copper plate 32, and then sprayed to the heat-conducting copper column 25 through the spray hole, cooling the heat-conducting copper column 25, and then cooling the copper sheet and the material, and the connecting pipe 23 connects the two relative connecting strips 22, and the connecting pipe 23 is set to facilitate the gas to circulate inside the connecting strip 22. When the mold is closed, the connecting strips 22 move away from each other and away from the heat-conducting copper column 25. When the second rotating column 27 rotates and the two connecting bars 22 move relative to each other, the fourth gear is rotated to drive the rack 29 to move outward, thereby driving the movable plate 4 to move outward, so that the movable plate 4 moves out of the interior of the upper mold 1 and the lower mold 2, which is convenient for the staff to supply air to the interior, and at the same time, the heat dissipation fins 33 are moved out of the interior of the upper mold 1 and the lower mold 2, which is convenient for the heat dissipation fins 33 to accelerate the heat dissipation of the copper sheet. The movable copper plate 32 that can be slidably arranged allows the movable plate 4 to move outward and can also maintain communication with the movable plate 4. At the same time, the sleeved copper plate 31 and the movable copper plate 32 are also convenient for heat conduction, thereby improving the efficiency of heat dissipation.

[0028] Preferably, two adjacent connecting strips 22 are hinged with hinged plates 20, and the tops of the two hinged plates 20 are hinged with an air outlet plate 7, and the tops of the air outlet plates 7 are provided with a plurality of air outlet holes 6, and a hose is provided inside the hinged plate 20, and one end of the hose is connected to the air outlet plate 7, and three delivery pipes 24 are arranged on one side of the hinged plate 20, and the other end of the hose is connected to the delivery pipe 24; A through hole 42 is formed on the other side of the connecting strip 22, a moving cylinder 39 is slidably arranged inside the through hole 42, one end of the moving cylinder 39 extends into the interior of the connecting strip 22, a sealing disk 40 is provided at one end of the moving cylinder 39, a plurality of first air grooves 37 are formed on the outer wall of the moving cylinder 39, and a plurality of second air grooves 38 are formed at one end of the delivery pipe 24; A spring 41 is disposed inside the connecting strip 22 , and one end of the spring 41 is connected to the sealing disk 40 .

[0029] Specifically, when the connecting strip 22 moves, the two opposite connecting strips 22 move toward each other, and then the two adjacent back-to-back connecting strips 22 move away from each other. When moving away from each other, the hinged plate 20 will be driven to move, so that the hinged plate 20 tilts downward, and the air outlet plate 7 is driven to move downward, and the heat-conducting copper plate 5 moves to the position of the air outlet plate 7. The air outlet plate 7 moves downward to the bottom of the heat-conducting copper plate 5, and when the hinged plate 20 moves, one end of the conveying pipe 24 arranged on one side thereof will be inserted into the interior of the moving cylinder 39 and connected to the moving cylinder 39, driving the moving cylinder 39 to move toward the interior of the connecting strip 22, so that the first air groove 37 enters the interior of the connecting strip 22. At this time, the gas inside the connecting strip 22 will enter the interior of the moving cylinder 39 through the first air groove 37, and then enter the interior of the conveying pipe 24 through the second air groove 38, and then enter the interior of the air outlet plate 7, and then spray upward through the air outlet hole 6, thereby dissipating the heat of the heat-conducting copper plate 5 above the air outlet plate 7, thereby improving the heat dissipation efficiency. After the mold is closed, the air outlet plate 7 is reset, and the conveying pipe 24 is also separated from the interior of the moving cylinder 39. The moving cylinder 39 is automatically reset by the spring 41. After the reset, the sealing disk 40 at one end of the moving cylinder 39 can seal the through hole 42 to prevent the moving cylinder 39 from communicating with the connecting strip 22.

[0030] When the above-mentioned compression molding device is used, the following molding process is also involved, which specifically includes the following steps: Step 1, design and manufacture an upper mold 1 and a lower mold 2, whose arc-shaped surfaces are consistent with the aerodynamic shape of the drone wing. Both the upper mold 1 and the lower mold 2 are steel frames, and the arc-shaped surfaces are machined by a CNC lathe; Step 2: CNC processing sandwich foam, the foam adopts polymethacrylimide PMI foam, and the processing shape is according to the design drawing; Step 3: Degrease the mold: clean the mold with acetone, wipe it in a single direction with a non-woven cloth, wait for 5 minutes for the acetone to evaporate each time, wipe it until there is no dirt, apply the release agent, apply the release agent on the curved surface of the mold 5 times, and dry it for at least 15 minutes between each time; Step 4, preforming composite wing C-shaped beams; using sandwich foam as a positive mold, laying prepreg at the corresponding position, laying thickness and direction according to process requirements, bagging and cold pumping, vacuuming to at least -0.08MPa, time at least 60 minutes, preforming wing beams; Step 5: Lay the lower skin prepreg on the surface of the lower mold 2. The number and direction of the layers shall be in accordance with the process requirements. The layer angle tolerance is ±5°. A 30-40mm back-wrapped surplus material is reserved at the leading edge. The back-wrapped surplus material is laid on the end face of the lower mold and protected with an isolation film. Step 6: Cold draw of the prepreg of the lower mold 2, laying a non-porous isolation film, a breathable felt, and a vacuum bag on the surface of the prepreg of the lower mold mold in sequence, and evacuating to at least -0.08MPa for at least 15 minutes to ensure that the vacuum bag fits tightly to the surface of the part without bridging, following the shape, and leaking, and the remaining material after packaging has no wrinkles or bends; Step 7: Install the wing frame, foam, and wrap the core foam with adhesive film. Position and install the preformed wing beams, ribs, and foam on the lower skin prepreg according to the process requirements to ensure that they are fully fitted with the lower skin prepreg without gaps, and then make bags and cold draw; Step 8, prepreg repacking: repack the reserved remaining material of the lower skin prepreg, take the rear edge line as the reference, lay the upper skin prepreg on the installed wing frame and foam, and overlap with the repacked remaining material, with an overlap range of 25mm. The laying angle and sequence are in accordance with the process requirements, use a polytetrafluoroethylene scraper to roll the sheet, remove bubbles, and make bags and cold draw after the laying is completed; Step 9, close the upper mold 1 and the lower mold 2 for cold pressing, close the upper and lower molds, use the positioning pins to position the upper and lower molds, check the mold closing situation, if necessary, use a mallet to knock the upper mold 1 until it is pressed tightly, place the mold in the center of the hot press, pressurize 2.5±0.35MPa, cold press for one minute, check the mold clearance, which is required to be ≤0.1mm; heat up to 45-60℃, pressurize to 5±0.35MPa, keep for 3 hours, then separate the upper and lower molds, check the surface quality of the parts, and see if there are any defects; Step 10, close the upper and lower molds and solidify; close the upper and lower molds, position the upper and lower molds with positioning pins, put them into the autoclave, increase the temperature and pressure at the same time, increase the pressure to 0.6MPa, increase the temperature to 125±3℃, increase the temperature at a rate of 3℃ / min, keep warm for 120min, cool to room temperature, cool at a rate of 2℃ / min, release the pressure and take the product out of the autoclave. The above steps are used to realize the compression molding of composite sandwich wing.

[0031] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A molding device for drone wings, comprising an upper mold (1) and a lower mold (2), wherein a groove (3) is provided at the top of the upper mold (1) and a groove (3) is provided at the bottom of the lower mold (2), and the device is characterized in that: The two ends of the upper mold (1) and the two ends of the lower mold (2) are connected via a connecting piece (9); the bottom of the upper mold (1) and the top of the lower mold (2) are both provided with an arc surface having the same shape as the wing of the drone; the bottom of the upper mold (1) and the top of the lower mold (2) are both embedded with a copper sheet, the shape of the copper sheet being the same as that of the arc surface; A plurality of heat-conducting copper pillars (25) are provided at the top of the upper mold (1) and the bottom of the lower mold (2), one end of each of the plurality of heat-conducting copper pillars (25) is in contact with the copper sheet, and five heat-conducting copper plates (5) are arranged inside the groove (3), each of the heat-conducting copper plates (5) is in contact with three of the heat-conducting copper pillars (25) distributed along the width direction of the groove (3).

2. The molding device for drone wings according to claim 1, characterized in that: The upper mold (1) and the lower mold (2) are both provided with a mounting cavity (19), a first rotating column (12) is rotatably provided on one side of the mounting cavity (19), and a second rotating column (27) is rotatably provided on the other side of the mounting cavity (19), the heat-conducting copper plate (5) is slidably arranged inside the groove (3), and the heat-conducting copper plate (5) is connected to the first rotating column (12); Two second rotating shafts (18) are rotatably provided at both ends of the upper mold (1) and the lower mold (2), wherein one end of the two second rotating shafts (18) located on one side of the installation cavity (19) extends into the interior of the installation cavity (19) and is spaced apart from and connected to the two ends of the first rotating column (12), one end of the two second rotating shafts (18) located on the other side of the installation cavity (19) is spaced apart from and connected to the two ends of the second rotating column (27), and the other end of the second rotating shaft (18) is connected to the connecting member (9).

3. The molding device for drone wings according to claim 2, characterized in that: Both ends of the upper mold (1) and the lower mold (2) are provided with a storage box (8), and the connecting member (9) comprises a first hinge rod (901) and a second hinge rod (902); Each storage box (8) is provided with a first hinge rod (901) and a second hinge rod (902) inside, one end of the first hinge rod (901) and the second hinge rod (902) being fixedly connected to the other end of the second rotating shaft (18), and the first hinge rod (901) and the second hinge rod (902) being arranged crosswise; The other end of the first hinge rod (901) is hinged to the other end of the second hinge rod (902) opposite in the vertical direction, and the other end of the second hinge rod (902) is hinged to the other end of the first hinge rod (901) opposite in the vertical direction.

4. The molding device for drone wings according to claim 2, characterized in that: A third gear (17) is mounted on one end of the second rotating shaft (18), and second gears (16) are disposed on both ends of the first rotating column (12) and the second rotating column (27), and the third gear (17) is meshingly connected with the second gear (16).

5. The molding device for drone wings according to claim 4, characterized in that: A slide groove is provided on one side wall of the groove (3), and the slide groove is communicated with the installation cavity (19). Five first threaded cylinders (15) are provided on the first rotating column (12), and a connecting block (13) is provided on the first threaded cylinder (15). Side plates (21) are provided at both ends of the heat-conducting copper plate (5), and a first rotating shaft (11) is provided in the middle of one of the side plates (21), and the first rotating shaft (11) passes through the slide groove and is connected to the connecting block (13).

6. The molding device for drone wings according to claim 5, characterized in that: One end of the first rotating shaft (11) passes through the top of the connecting block (13), one end of the first rotating shaft (11) is connected to a first gear (14), and five groups of gear teeth (43) are arranged on the top of one side of the groove (3), and the gear teeth (43) are located on one side of the connecting block (13).

7. The molding device for drone wings according to claim 2, characterized in that: A plurality of connecting strips (22) are slidably arranged at the bottom of the groove (3), two connecting strips (22) facing each other form a group, and a total of five groups of connecting strips (22) are arranged inside the groove (3), three arc-shaped blocks (26) are arranged on one side of each connecting strip (22), a third gas transmission channel (36) is provided inside the connecting strip (22) and the arc-shaped block (26), and a spray hole is provided on one side of the arc-shaped block (26); Ten second threaded cylinders (28) are arranged on the second rotating column (27), and the rotation directions of two opposite second threaded cylinders (28) are opposite. The second threaded cylinders (28) are matched and connected to a transverse plate (30), and one end of the connecting strip (22) extends into the interior of the installation cavity (19) and is connected to the transverse plate (30).

8. The molding device for drone wings according to claim 7, characterized in that: A movable plate (4) is embedded on both sides of the upper mold (1) and the lower mold (2); an air inlet (10) is provided on one side of the movable plate (4); a first gas supply channel (34) is provided inside the movable plate (4); a sleeve copper plate (31) is provided at one end of the transverse plate (30); a movable copper plate (32) is slidably provided inside the sleeve copper plate (31); a second gas supply channel (35) is provided inside the transverse plate (30); one end of the movable copper plate (32) is slidably connected to the movable plate (4); a top of one end of the movable copper plate (32) is connected to the first gas supply channel (34) through a hose; the first gas supply channel (34), the sleeve copper plate (31), the movable copper plate (32), the second gas supply channel (35) and the third gas supply channel (36) are connected to each other; A heat dissipation fin (33) is provided at the bottom of the movable plate (4), and one end of the heat dissipation fin (33) extends to the interior of the first gas transmission channel (34); Three racks (29) are arranged on the other side of the movable plate (4), and three fourth gears are arranged on the second rotating column (27) at positions vertically opposite to the racks (29), and the racks (29) are meshingly connected with the fourth gears.

9. The molding device for drone wings according to claim 7, characterized in that: Two adjacent connecting strips (22) are hingedly connected with hinged plates (20), the tops of the two hinged plates (20) are hingedly connected with an air outlet plate (7), the tops of the air outlet plates (7) are provided with a plurality of air outlet holes (6), a hose is arranged inside the hinged plate (20), one end of the hose is connected to the air outlet plate (7), three delivery pipes (24) are arranged on one side of the hinged plate (20), the other end of the hose is connected to the delivery pipe (24); A through hole (42) is provided on the other side of the connecting strip (22), a moving cylinder (39) is slidably arranged inside the through hole (42), one end of the moving cylinder (39) extends into the interior of the connecting strip (22), a sealing disk (40) is provided at one end of the moving cylinder (39), a plurality of first air grooves (37) are provided on the outer wall of the moving cylinder (39), and a plurality of second air grooves (38) are provided at one end of the delivery pipe (24); A spring (41) is disposed inside the connecting strip (22), and one end of the spring (41) is connected to the sealing disk (40).

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