Unmanned aerial vehicle nacelle 3D printing manufacturing process and production equipment thereof

Abstract

The application discloses a kind of unmanned plane nacelle 3D printing manufacturing process and production equipment, belong to 3D printing technical field, including 3D printing device ontology, lifting assembly, mounting assembly, disassembly component and sealing assembly;The lifting assembly is provided with the substrate for carrying printing piece on, the substrate is lifted in forming cylinder by lifting assembly, the disassembly component is used to disassemble the substrate that printing is completed, the mounting assembly is used to install spare substrate on lifting assembly, the sealing assembly is used for sealing when printing piece forming;The substrate of the application is replaced and printing piece cooling is parallel, cooling does not occupy host time, auxiliary time is almost zero, realizes continuous production of equipment.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and in particular to a 3D printing process and production equipment for unmanned aerial vehicle (UAV) pods. Background Technology

[0002] Additive manufacturing (3D printing), as an advanced manufacturing technology, can directly mold complex and precision components from digital models into a single unit. It offers advantages such as design freedom, near-net-shape forming, and rapid iteration, and is widely used in the manufacturing of drone pods. Its conventional process includes three main stages: pre-processing, printing, and post-processing, effectively solving the defects of traditional casting processes such as structural limitations, bulkiness, long cycles, and poor performance.

[0003] The requirements for lightweight, integrated, and efficient mass production of drone pods are extremely high. Existing 3D printing processes have significant shortcomings: after printing, the machine must be stopped, the molded substrate must be removed, and a spare substrate must be re-clamped. This process is cumbersome, involves long downtime, damages the inert protective environment, results in low equipment utilization, and makes continuous production impossible, thus failing to meet the high-efficiency manufacturing requirements of drone pods. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of low printing efficiency due to the complicated substrate process in the prior art, and to propose a 3D printing process and production equipment for drone pods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A 3D printing process and production equipment for unmanned aerial vehicle (UAV) pods includes a 3D printing device body, a lifting component, an installation component, a disassembly component, and a sealing component; The 3D printing device body is provided with a forming cylinder, the lifting component is located below the forming cylinder, the lifting component is provided with a base plate for supporting the printed part, the base plate is lifted and lowered in the forming cylinder by the lifting component, the disassembly component is used to disassemble the printed base plate, the installation component is used to install a spare base plate on the lifting component, and the sealing component is used for sealing during the forming of the printed part.

[0006] The disassembly assembly includes a sliding plate, a connecting block, and a second driving unit; the sliding plate is disposed on the second driving unit, and the connecting block is disposed on the upper surface of the sliding plate; the connecting block is connected to the substrate, and the sliding plate separates the substrate from the lifting assembly through the connecting block.

[0007] The mounting assembly includes two support units, a push block, a drive unit, a fixing plate, and two connecting plates. The connecting plates are spaced apart on both sides of the fixing plate along its width direction. The two support units are respectively mounted on the two connecting plates. The support units are spaced apart along the vertical direction with multiple base plates. The fixing plate is fixed in the body of the 3D printing device. The drive unit is mounted on the fixing plate. The push block is slidably mounted on the upper surface of the fixing plate. The drive unit drives the push block to slide along the length direction of the fixing plate.

[0008] The support unit includes multiple support plates and a conveyor belt. The conveyor belt is mounted on the surface of the connecting plate via rotating rollers. Each support plate is spaced apart along the conveying direction of the conveyor belt and is perpendicular to the conveying direction of the conveyor belt. With this structure, multiple spare substrates can be stably placed on each support plate. The conveyor belt sequentially delivers the substrates to the installation position through stepping motion, realizing batch storage and automatic orderly supply of substrates, avoiding manual loading one by one. The arrangement of the support plates perpendicular to the conveying direction can position and stabilize the substrates during the conveying process. As a result, the auxiliary time for substrate replacement can be shortened, supporting long-term continuous automated operation of the 3D printing equipment.

[0009] The lifting assembly also includes a mounting base; the mounting base is slidably connected to the base plate, and limiting blocks for connecting the mounting base are provided on both sides of the base plate. A separation block is provided at one end of the base plate, and the separation block is connected to the base plate through a reset member. The separation block is nested outside the connecting block through a groove on it.

[0010] The mounting base is also provided with a limiting groove, which is used for sliding connection of the limiting block.

[0011] The sealing assembly includes a mounting plate, a second reset component, a limiting plate, a third reset component, and a sealing plate. The mounting plate is positioned below the molding cylinder. The two ends of the second reset component are connected to the molding cylinder and the mounting plate, respectively. The limiting plate is fixed vertically to the lower surface of the mounting plate. The sealing plate slides on the limiting plate and slides along its length, while also being able to move up and down vertically. The two ends of the third reset component are connected to the sealing plate and the 3D printing device body, respectively. Through this structure, the sealing plate can maintain contact and sealing as the substrate moves up and down. When the substrate descends to the bottom, the sealing plate automatically detaches from the mounting base based on the trajectory of the third reset component and the guide groove, making room for the disassembly and installation of the spare substrate. After the sealing plate is reset, its bottom sealing structure is flush with the upper surface of the spare substrate to be installed. During the process of the spare substrate being pushed into the mounting base, the surface of the spare substrate is cleaned by scraping through relative motion. Thus, dynamic follow-up sealing of the molding cavity, interference-free transition during automatic substrate replacement, and online cleaning of the spare substrate surface can be achieved without adding additional driving components.

[0012] The bottom end of the sealing plate is provided with a sealing strip and an extension extending in the horizontal direction. Telescopic columns are provided on both sides of the bottom end of the sealing plate, and the extension abuts against the bottom of the lifting assembly.

[0013] The 3D printing device body has a guide groove, which is used to limit the sliding direction of the telescopic column.

[0014] A 3D printing process for drone pods includes: The drone pod is modeled using 3D software. After modeling, the model is divided into slices, paths are generated, and the support structure design is optimized. Support structures are added to suspended, thin-walled, or large overhang areas. The printing posture is optimized to reduce the amount of support used. Then, metal spherical powder with a particle size of 15-53μm is selected, dried, and sieved for later use. The substrate is installed in the forming cylinder of the 3D printing device, and inert gas is filled into the forming cylinder or a vacuum is drawn. Inside the sealed forming cylinder, a layer of metal powder is evenly spread onto the preheated substrate using a powder spreading roller. A high-energy laser selectively melts the powder according to the slice data, forming a molten pool that quickly solidifies. The forming platform then precisely descends 20-50μm, repeating the powder spreading, melting, and layer descent process until the part is fully formed. After printing, the substrate moves downwards, the sealing plate disengages from the substrate, and the disassembly assembly separates the substrate from the mounting base, allowing the substrate to enter the cooling chamber. The mounting base moves upwards to align with the mounting assembly, which then installs the unformed substrate onto the mounting base, completing the substrate switching. The replaced substrate moves upwards with the mounting base and printing resumes. The substrate with the part is then placed in the cooling chamber for slow cooling (several hours) to reduce internal stress. Remove the substrate from the cooling chamber, remove the parts from the substrate by wire cutting, remove residual powder and support structure from internal pores, grind away any remaining support marks, perform annealing and hot isostatic pressing to close internal pores, increase the material density to near-forging level, and perform solution treatment as needed to improve density, strength, and toughness to achieve forging level; perform CNC precision machining on the parts themselves, including holes, threads, and assembly surfaces, and perform surface treatment to remove burrs and reduce roughness; perform quality inspection, testing dimensions, internal defects, and mechanical properties.

[0015] Compared with existing technologies, this invention provides a 3D printing process and production equipment for unmanned aerial vehicle (UAV) pods, which has the following beneficial effects: 1. This invention, through the setting of an installation component and a disassembly component, allows the substrate to continue descending to the bottom of the forming cylinder after printing. The substrate is then connected to a separating block on the substrate via a connecting block on a sliding plate of the disassembly component, detaching the printed substrate from the mounting base. A lifting component moves the mounting base upwards to the installation component, and a pushing block on the installation component pushes the substrate from the installation component onto the mounting base, causing a limiting block on the substrate to slide into a limiting groove on the mounting base, completing the substrate switching. The lifting component can then carry a spare substrate for new printing. This solves the problem of traditional processes requiring waiting for the forming cylinder and printed parts to cool naturally to a safe temperature before manual removal, cleaning, and reinstallation of the substrate, which can take several hours. This invention allows the substrate replacement process and the cooling and post-processing of the printed parts to be carried out in parallel in an isolated area below the forming cylinder. The cooling of the previous printed part no longer occupies the main printing time, and a new printing task can be started immediately. By compressing auxiliary time to almost zero, the equipment can maintain almost continuous production, significantly improving output efficiency per unit time, which is particularly advantageous for rapid manufacturing of small batches and multiple varieties. 2. This invention ensures a tight seal during substrate printing by having the sealing device move synchronously downwards with the mounting base. When the sealing plate reaches the substrate removal device along with the substrate, the sliding groove causes the sealing plate to disengage from the mounting base and reset. At this point, the sealing strip at the bottom of the sealing plate is aligned with the upper surface of the substrate on the mounting assembly. This allows the sealing strip at the bottom of the sealing plate to clean the newly installed substrate's molding surface when a spare substrate is installed via the mounting assembly, preventing the substrate surface from being exposed to the workshop environment and becoming contaminated. After this automatic cleaning, the instantaneous cleanliness when flush with the working plane meets the powder spreading requirements. This fundamentally solves the printing failure problems caused by substrate contamination, such as uneven first-layer powder, sintering spheroidization, and weak adhesion to the substrate.

[0016] Other advantages, objectives and features of the invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art from an examination of the hereinafter; or may be learned from the practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the workflow of the present invention.

[0018] Figure 2 This is a first-view overall structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the overall structure of the present invention from a second perspective.

[0020] Figure 4 This is a schematic diagram of the internal structure from a first-view perspective of the present invention.

[0021] Figure 5 This is a schematic diagram of the internal structure of the present invention from a second perspective.

[0022] Figure 6 For the present invention Figure 5 A magnified schematic diagram of structure A in the diagram.

[0023] Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged B structure in the diagram.

[0024] Figure 8 This is a schematic diagram of the sealing plate structure of the present invention.

[0025] Figure 9 This is a schematic diagram of the installation component structure of the present invention.

[0026] Figure 10 This is a schematic diagram of the mating structure between the substrate and the mounting base of the present invention.

[0027] Figure 11 This is a schematic diagram of the mating structure of the substrate and the disassembly assembly of the present invention.

[0028] In the picture: 1. 3D printing device body; 11. Molding cylinder; 12. Substrate mounting port; 13. Molded substrate outlet; 2. Lifting assembly; 21. Substrate; 22. Separation block; 23. Reset component one; 24. Limiting block; 25. Limiting groove; 26. Mounting base; 3. Mounting assembly; 31. Support unit; 311. Support plate; 312. Conveyor belt; 32. Pushing block; 33. Drive unit one; 34. Fixing plate; 35. Connecting plate; 4. Disassembly assembly; 41. Sliding plate; 42. Connecting block; 43. Drive unit two; 5. Guide groove; 6. Sealing assembly; 61. Mounting plate; 62. Reset component two; 63. Limiting plate; 64. Reset component three; 65. Sealing plate; 651. Telescopic column; 7. Cooling chamber. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] To address the issues of low substrate replacement efficiency and inability to continuously produce printing equipment in existing technologies, this invention utilizes a lifting assembly 2, an installation assembly 3, a disassembly assembly 4, and a sealing assembly 6 working in concert. During printing, the substrate 21 descends layer by layer within the forming cylinder 11 along with the lifting assembly 2, while the sealing assembly 6 dynamically seals to maintain an inert environment. After printing is completed, the substrate 21 descends to the disassembly position, the sealing plate 65 automatically resets, the disassembly assembly 4 separates the substrate 21 carrying the printed parts and sends it into the cooling chamber 7, the empty mounting seat 26 rises to the mounting position, and the installation assembly 3 automatically pushes the spare substrate 21 to complete the positioning and clamping. The sealing plate 65 simultaneously cleans the spare substrate 21 and reseals it, and the equipment immediately restarts printing, realizing parallel operation of the entire process of printing, substrate replacement, cooling, and post-processing.

[0031] Reference Figure 1-11 A 3D printing process and production equipment for drone pods includes a 3D printing device body 1, a lifting component 2, an installation component 3, a disassembly component 4, and a sealing component 6.

[0032] A forming cylinder 11 is provided inside the 3D printing device body 1, and a lifting assembly 2 is fixedly installed inside the 3D printing device body 1 and located below the forming cylinder 11. The lifting assembly 2 includes a mounting base 26, on which a base plate 21 for supporting the printed part is slidably connected. Specifically, the base plate 21 is a convex plate, with the protrusion located in the middle of the lower surface of the base plate 21 and extending downward; limiting blocks 24 are arranged on both sides of the protruding part of the base plate 21 along the length direction of the base plate 21, and the mounting base 26 has limiting grooves 25 that slide with the limiting blocks 24. One end of the substrate 21 is provided with a groove for accommodating the separation block 22. A connecting hole is provided through the separation block 22. The separation block 22 and the substrate 21 are connected by a reset member 23. The separation block can extend and retract within the groove via the reset member 23. The substrate 21 moves up and down within the molding cylinder 11 via the lifting assembly 2. The reset member 23 is an elastic connector. The end of the separation block 22 near the bottom of the groove is provided with an upwardly extending boss. A downwardly extending edge is provided at the groove opening. When the separation block 22 is reset, the boss on the separation block 22 abuts against the downwardly extending edge at the groove opening to prevent the separation block 22 from disengaging from the groove opening.

[0033] The disassembly assembly 4 is located on one side below the forming cylinder 11 and is used to remove the printed substrate 21 from the mounting base 26. The disassembly assembly 4 includes a sliding plate 41, a connecting block 42 and a second drive unit 43. The second drive unit 43 is composed of a motor, a reducer and a lead screw. The sliding plate 41 is located on the output end of the second drive unit 43 and the connecting block 42 is fixed to the upper surface of the sliding plate 41. After printing, the lifting component 2 lowers the mounting base 26, and the sealing component 6 disengages from the mounting base 26 as it descends. The separating block 22 is pushed by the reset component 23 to move along the length of the substrate 21, protruding from the groove and exposing the connecting hole on the separating block 22. When the mounting base 26 is opposite to the disassembly component 4, the mounting base 26 stops moving downward. At this time, the separating block 22 is nested outside the connecting block 42 through the groove and contacts the sliding plate 41. The driving unit 43 pushes the sliding plate 41 to move away from the substrate 21. The substrate 21 slides synchronously with the sliding plate 41 along the limiting groove 25, thereby separating the substrate 21 from the mounting base 26 and entering the cooling chamber.

[0034] Mounting assembly 3 is located on the other side below the forming cylinder 11 and is used to mount the substrate 21 onto the mounting base 26. Mounting assembly 3 includes two support units 31, a push block 32, a drive unit 33, a fixing plate 34, and two connecting plates 35. The fixing plate 34 is fixed inside the 3D printing device body 1, and the two connecting plates 35 are spaced apart on both sides of the fixing plate 34 along its width direction. The support unit 31 includes multiple support plates 311 and a conveyor belt 312. The conveyor belt 312 is mounted on the surface of the connecting plate 35 via rotating rollers. Each support plate 31... 1. The support plates 311 are spaced apart along the conveying direction of the conveyor belt 312 and perpendicular to the conveying direction; multiple spare base plates 21 are placed on each support plate 311 respectively, and the step-by-step supply of the base plates 21 is realized by the conveyor belt 312; the drive unit 33 is disposed on the fixed plate 34, and the push block 32 is slidably disposed on the upper surface of the fixed plate 34. The drive unit 33 drives the push block 32 to slide along the length direction of the fixed plate 34. The drive unit 33 is also composed of a motor, a reducer and a lead screw. The fixed plate 34 is provided with a notch at the connection of the connecting plate 35 for the support plate 311 to pass through. When the mounting base 26 moves upward to the mounting assembly 3, the drive unit 33 pushes the push block 32, pushing the substrate 21, which is tightly attached to the fixing plate 34, onto the mounting base 26. At this time, the push block 32 is supported between the fixing plate 34 and the spare substrate 21. After the substrate 21 and the mounting base 26 are installed, the push block 32 is driven by the drive unit 33 to slide away from the mounting base 26, causing the push block 32 to disengage from the support of the spare substrate 21. At this time, the spare substrate 21 will press against the support plate 311 due to its own gravity, and the conveyor belt... 312 moves downward under the gravitational potential energy transmitted from the support plate 311. Since the support plate 311 at the bottom of the spare substrate 21 is no longer supported, the conveyor belt 312 rotates in a clockwise direction. At the same time, the end of the push block 32 that abuts against the spare substrate 21 is trapezoidal. When the push block 32 is released from the restriction on the spare substrate 21, the spare substrate 21 moves down synchronously. The limiting slope formed by the support plate 311 at the bottom and the push block 32 together makes the spare substrate 21 fall slowly, completing the installation and downward movement of the spare substrate 21.

[0035] The sealing assembly 6 is used to seal the forming cylinder 11 during the printing process and also has the function of cleaning the surface of the spare substrate. The sealing assembly 6 includes a mounting plate 61, a second reset member 62, a limiting plate 63, a third reset member 64, and a sealing plate 65. The mounting plate 61 is disposed below the forming cylinder 11. The two ends of the second reset member 62 (such as a spring) are respectively connected to the forming cylinder 11 and the mounting plate 61, so that the mounting plate 61 can move up and down relative to the forming cylinder 11. The limiting plate 63 is fixed vertically to the mounting plate 61. On the lower surface, the sealing plate 65 is slidably mounted on the limiting plate 63, and can slide along the length of the limiting plate 63, while also being able to rise and fall vertically. The two ends of the reset component 64 are connected to the sealing plate 65 and the 3D printing device body 1, respectively. The bottom end of the sealing plate 65 is provided with a sealing strip and an extension extending horizontally, and telescopic columns 651 are provided on both sides of the bottom end of the sealing plate 65. A guide groove 5 is provided inside the 3D printing device body 1, and the telescopic columns 651 slide along the guide groove 5, thereby guiding the movement trajectory of the sealing plate 65.

[0036] During printing, as the mounting base 26 drives the substrate 21 to descend layer by layer, when the lower surface of the mounting base 26 contacts the extension of the sealing plate 65, the continued descent will push the sealing plate 65 to move downward. A sealing structure (such as a sealing strip) is provided at the connection between the bottom end of the sealing plate 65 and the extension. The sealing structure is tightly fitted with the lower surface of the mounting base 26, thereby sealing the bottom of the molding cylinder 11 and ensuring an inert gas environment in the molding cavity. After printing, the mounting base 26 continues to drive the substrate 21 to descend layer by layer. The telescopic columns on both sides of the sealing plate 65 slide along the guide groove 5 until the sealing plate 65 slides horizontally along the limiting plate 63, so that the sealing plate 65 is no longer in contact with the mounting base 26. Under the action of the reset member 3 64 and the reset member 2 62, the sealing plate 65 is reset along the guide groove 5 and is released from the restriction of the mounting base 26. When the sealing plate 65 is reset, the separation block 22 located in the substrate 21 is ejected by the action of the reset member 1 23 to prepare for the substrate 21 to be removed. At the same time, the sealing strip at the bottom of the reset sealing plate 65 is at the same horizontal position as the upper surface of the installed spare substrate 21. When the spare substrate 21 is installed, the sealing strip at the bottom of the sealing plate 65 will come into contact with the molding surface of the spare substrate 21. As the spare substrate 21 is installed, the sealing strip moves relative to the spare substrate 21, completing the cleaning of the molding surface of the spare substrate 21.

[0037] The extension of the sealing plate 65 is provided with an inclined surface, so that when the spare substrate 21 rises with the mounting base 26, the sealing plate 65 can be pushed open, preventing the sealing plate 65 from obstructing the rise of the spare substrate 21 and ensuring that multiple molding processes can proceed smoothly.

[0038] The 3D printing device body 1 has a molding substrate outlet 13 for removing the cooled substrate 21 and a substrate mounting port 12 for mounting the spare substrate 21 on the side near the mounting component 3.

[0039] The following section describes in detail a 3D printing process for a drone pod, using the aforementioned equipment.

[0040] First, the UAV pod is modeled using 3D software. After modeling, the model is divided into slices, paths are generated, and the support structure design is optimized. Support structures are added to suspended, thin-walled, or large overhang areas, and the printing posture is optimized to reduce the amount of support required. Then, metal spherical powder with a particle size of 15-53μm is selected, dried, and sieved for later use.

[0041] The substrate 21 is mounted on the mounting base 26 inside the molding cylinder 11 of the 3D printing device via the mounting assembly 3. The chamber door is closed, and inert gas is filled into the molding cylinder 11 or a vacuum is drawn to make the oxygen content lower than 100ppm.

[0042] Inside the sealed forming cylinder 11, a layer of metal powder is evenly spread onto the preheated substrate 21 using a powder spreading roller. The preheating temperature of the substrate 21 can be set to 80-200℃ depending on the material. The powder is selectively melted using a high-energy laser according to the slice data, forming a molten pool and rapidly solidifying. Then, the lifting assembly 2 is controlled to precisely lower the forming platform by 20-50μm, repeating the powder spreading, melting, and layer lowering process until the part is completely formed.

[0043] After printing, the lifting assembly 2 moves the substrate 21 downwards, and the sealing plate 65 disengages from the substrate 21, completing its reset. The disassembly assembly 4 separates the substrate 21 from the mounting base 26, allowing the substrate 21 with the printed part to enter the cooling chamber (filled with inert gas for slow cooling to reduce internal stress). Simultaneously, the empty mounting base 26 moves upwards to a position opposite to the mounting assembly 3, and the mounting assembly 3 mounts the spare substrate 21 onto the mounting base 26, completing the substrate switching. After replacement, the spare substrate 21 moves upwards, the sealing assembly 6 automatically cleans and seals, and printing resumes.

[0044] After cooling in the cooling chamber, the substrate 21 containing the part is removed, and the part is cut from the substrate using a wire EDM machine. Then, residual powder and support structures within the internal pores of the part are removed, and any remaining support marks are polished away. The part is then placed in a vacuum annealing furnace for annealing, followed by hot isostatic pressing under high temperature and pressure to close internal pores and increase the material density to near-forging levels. If necessary, solution aging treatment can be performed to further improve density, strength, and toughness, achieving forging-level properties.

[0045] After heat treatment, the parts undergo CNC precision machining to machine features such as holes, threads, and assembly surfaces, followed by surface treatments (such as sandblasting and polishing) to remove burrs and reduce roughness. Finally, quality inspection is carried out, including coordinate measuring machine measurement, industrial CT inspection for internal defects, and tensile testing to test mechanical properties. Once qualified, the parts can be used for UAV pod assembly.

[0046] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples, without contradiction.

Claims

1. A 3D printing production equipment for a drone pod, comprising a 3D printing device body (1), wherein a forming cylinder (11) is further provided inside the 3D printing device body (1); characterized in that, The 3D printing device body (1) is provided with a lifting component (2), an installation component (3), a disassembly component (4), a sealing component (6), and a cooling chamber (7). The lifting assembly (2) is located below the forming cylinder (11). The lifting assembly (2) is provided with a base plate (21) for carrying the printed parts. The base plate (21) is provided on the lifting assembly (2) and is lifted and lowered in the forming cylinder (11) by the lifting assembly (2). The disassembly assembly (4) is used to disassemble the printed base plate (21). The installation assembly (3) is used to install the spare base plate (21) on the lifting assembly (2). The sealing assembly (6) is used for sealing when the printed parts are formed.

2. The 3D printing production equipment for a drone pod according to claim 1, characterized in that, The disassembly assembly (4) includes a sliding plate (41), a connecting block (42), and a second driving unit (43); the sliding plate (41) is disposed on the second driving unit (43), and the connecting block (42) is disposed on the upper surface of the sliding plate (41); the connecting block (42) is connected to the substrate (21), and the sliding plate (41) separates the substrate (21) from the lifting assembly (2) through the connecting block (42).

3. The 3D printing production equipment for a drone pod according to claim 2, characterized in that, The mounting assembly (3) includes two support units (31), a push block (32), a drive unit (33), a fixing plate (34), and two connecting plates (35). The connecting plates (35) are spaced apart on both sides of the fixing plate (34) along the width direction. The two support units (31) are respectively disposed on the two connecting plates (35). The support units (31) are spaced apart with multiple base plates (21) along the vertical direction. The fixing plate (34) is fixed inside the 3D printing device body (1). The drive unit (33) is disposed on the fixing plate (34). The push block (32) is slidably disposed on the upper surface of the fixing plate (34). The drive unit (33) drives the push block (32) to slide along the length direction of the fixing plate (34).

4. The 3D printing production equipment for a drone pod according to claim 3, characterized in that, The support unit (31) includes multiple support plates (311) and a conveyor belt (312); the conveyor belt (312) is set on the surface of the connecting plate (35) by a rotating roller, and each support plate (311) is spaced apart along the conveying direction of the conveyor belt (312) and the support plate (311) is perpendicular to the conveying direction of the conveyor belt (312).

5. The 3D printing production equipment for a drone pod according to claim 4, characterized in that, The lifting assembly (2) also includes a mounting base (26); the mounting base (26) is slidably connected to the base plate (21), and the base plate (21) is provided with limiting blocks (24) for connecting the mounting base (26) on both sides. The base plate (21) is provided with a separating block (22) at one end. The separating block (22) is connected to the base plate (21) through a reset member (23). The separating block (22) is nested outside the connecting block (42) through a groove on it.

6. The 3D printing production equipment for a drone pod according to claim 5, characterized in that, The mounting base (26) is also provided with a limiting groove (25), which is used for sliding connection of the limiting block (24).

7. The 3D printing production equipment for a drone pod according to claim 6, characterized in that, The sealing assembly (6) includes a mounting plate (61), a second reset component (62), a limiting plate (63), a third reset component (64), and a sealing plate (65). The mounting plate (61) is located below the molding cylinder (11). The two ends of the second reset component (62) are connected to the molding cylinder (11) and the mounting plate (61) respectively. The limiting plate (63) is fixed on the lower surface of the mounting plate (61) in the vertical direction. The sealing plate (65) is slidably mounted on the limiting plate (63) and slides along the length of the limiting plate (63), while rising and falling in the vertical direction. The two ends of the third reset component (64) are connected to the sealing plate (65) and the 3D printing device body (1) respectively.

8. The 3D printing production equipment for a drone pod according to claim 7, characterized in that, The bottom end of the sealing plate (65) is provided with a sealing strip and an extension extending in the horizontal direction. Telescopic columns (651) are provided on both sides of the bottom end of the sealing plate (65). The extension abuts against the bottom of the lifting assembly (2).

9. The 3D printing production equipment for a drone pod according to claim 8, characterized in that, The 3D printing device body (1) is also provided with a guide groove (5), which is used to limit the sliding direction of the telescopic column (651).

10. A 3D printing process for a drone pod, applied to the 3D printing production equipment for a drone pod as described in any one of claims 1 to 9, characterized in that, Includes the following steps: The drone pod is modeled using 3D software. After modeling, the model is divided into slices, paths are generated, and the support structure design is optimized. Support structures are added to suspended or large overhang areas. The printing posture is optimized to reduce the amount of support. Then, metal spherical powder with a particle size of 15-53μm is selected, dried, sieved and set aside. The substrate (21) is installed in the molding cylinder (11), and inert gas is filled into the molding cylinder (11) or vacuum is drawn. Inside the sealed forming cylinder (11), a layer of metal powder is evenly spread on the preheated substrate (21) using a powder spreading roller. The powder is selectively melted by a high-energy laser according to the slice data to form a molten pool and solidify rapidly. Then, the forming platform is precisely lowered by 20-50μm. The powder spreading, melting, and layer lowering are repeated until the part is completely formed. After printing, the substrate (21) moves downward, and the sealing plate (65) is removed from the substrate (21) to complete the reset. The disassembly assembly (4) separates the substrate (21) from the mounting base (26) so that the substrate (21) enters the cooling chamber (7). The mounting base (26) moves upward and is opposite to the mounting assembly (3). The mounting assembly (3) installs the unformed substrate (21) on the mounting base (26) to complete the substrate (21) switching. The replaced substrate (21) moves upward with the mounting base (26) to start printing again. The substrate (21) with the part is placed in the cooling chamber (7) to cool slowly and reduce internal stress. Remove the substrate from the cooling chamber (7), remove the parts on the substrate (21) by wire cutting, remove the residual powder in the internal pores and the support structure, grind the residual traces of the support, perform annealing and hot isostatic pressing, close the internal pores, increase the material density to the level of a forging, and perform solid solution as needed to improve density, strength and toughness to reach the level of a forging; perform CNC precision machining on the holes, threads and assembly surfaces of the parts themselves, and perform surface treatment to remove burrs and reduce roughness; Conduct quality inspections, testing dimensions, internal defects, and mechanical properties.

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