Target aircraft body panel lower shell structure forming die

Abstract

The application relates to the technical field of injection molding equipment, in particular to a target machine body plate lower shell structure forming die, which comprises a workbench, the upper end of the workbench is fixedly connected with a female die, the inner side of the female die is provided with a trimming mechanism for processing plastic plates, the trimming mechanism comprises a moving assembly for moving the processed plates, the trimming mechanism further comprises a trimming assembly for processing the edges of the plates and the inner wall, the upper end of the workbench is provided with a mechanical arm, the output shaft of the mechanical arm is provided with a stripping mechanism of a processing die, a flexible polishing strip adjusts the adhesion force through a fourth electric push rod, the granular protrusions and bubble residues generated due to the uneven melting of recycled materials on the inner wall of the shell are removed in a targeted manner, and the problem that the inner wall is not completely processed in the prior art is solved; the detection position can be adjusted through a CCD camera along with the extension and retraction of a second electric push rod, and the real-time monitoring of defects such as scratches and depressions on the outer side of the recycled plastic shell is avoided.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, specifically to a molding die for the lower shell structure of a target machine body plate. Background Technology

[0002] In the field of target machine manufacturing, the lower shell of the fuselage serves as a core load-bearing and protective component, requiring a balance between lightweight design, impact resistance, and cost control. Therefore, recycled plastic injection molding is widely used. Compared to virgin materials, recycled plastics reduce material costs and align with environmental policies requiring the recycling of plastic waste. However, due to the characteristics of recycled plastics, such as large fluctuations in melt flow, high impurity content, and unstable thermal shrinkage, the injection-molded target machine shell faces numerous technical challenges in post-molding processing, which existing solutions struggle to address effectively.

[0003] Existing technologies for processing recycled plastics often suffer from problems such as burrs, raised particles on the inner wall, and dimensional deviations in the shell due to impurities and uneven melting of the recycled material. Furthermore, these processes rely heavily on manual post-processing, which is not only inefficient but also prone to damaging the shell structure due to operational errors. Additionally, delayed inspection (forming before inspection) leads to a high rate of defective products. In existing technologies, recycled melt tends to remain in the gaps of the punch mold cavity, requiring manual disassembly or partial wiping for mold cleaning. This is time-consuming and prone to missing dead corners in the cavity. Residual impurities can contaminate the recycled melt for the next injection, affecting molding quality. Existing target machine shell molding dies are mostly designed for virgin materials, failing to consider the characteristics of recycled material shrinkage fluctuations and wall thickness differences. They lack targeted adjustment structures, making it difficult to accommodate molding multiple types of recycled materials, resulting in a high shell scrap rate, low mold reuse rate, and potential secondary pollution during cleaning. Therefore, we propose a molding die for the lower shell structure of a target machine body panel. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a molding die for the lower shell structure of the target aircraft fuselage plate.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: a molding die for the lower shell structure of a target machine body plate, including a worktable, an injection tube installed at the upper end of the worktable, a concave die fixedly connected to the upper end of the worktable, a trimming mechanism for processing plastic plates provided on the inner side of the concave die, the trimming mechanism including a moving component for moving the processed plate, and a trimming component for processing the edge and inner wall of the plate, four guide rods fixedly connected to the front end of the concave die, a convex die slidably connected to the outer sides of the four guide rods, a hydraulic cylinder provided at the front end of the worktable, the output shaft of the hydraulic cylinder fixedly connected to the convex die, a robotic arm provided at the upper end of the worktable, and a demolding mechanism for processing the mold provided on the output shaft of the robotic arm.

[0006] Preferably, the trimming mechanism includes a fixed frame fixedly connected to the die cavity, a first motor mounted on the upper end of the fixed frame, a first threaded rod rotatably connected to the inner side of the fixed frame near one side, the output shaft of the first motor being fixedly connected to the first threaded rod, a slide rod rotatably connected to the inner side of the fixed frame near the other side, two sliders slidably connected to the inner side of the fixed frame, one of the two sliders being threadedly connected to the first threaded rod, and the other slider being slidably connected to the slide rod.

[0007] Preferably, the front end of the slider is provided with a first electric actuator, the output shaft of the first electric actuator is fixedly connected to a connecting rod, the other ends of the two connecting rods are jointly fixedly connected to an external gear ring, the front end of the external gear ring is fixedly connected to a fixed ring, the front end of the fixed ring is provided with a mounting plate, a second motor is mounted on the outside of the mounting plate, the output shaft of the second motor is fixedly connected to a first gear, the outside of the first gear meshes with the external gear ring, and four pulleys are rotatably connected to the outside of the second motor, the outside of the pulleys are rotatably connected to the fixed ring.

[0008] Preferably, the trimming assembly includes a third motor disposed at the lower end of the mounting plate. The output shaft of the third motor is fixedly connected to a guide frame. A counter-threaded rod is rotatably connected to the inner side of the guide frame. A fourth motor is mounted at the lower end of the guide frame. The output shaft of the fourth motor is fixedly connected to the counter-threaded rod. Two mutually symmetrical moving blocks are threadedly connected to the outer side of the counter-threaded rod. The moving blocks are slidably connected to the inner side of the guide frame. A second electric actuator is disposed on the inner side of the moving blocks. A CCD camera is disposed on the output shaft of the second electric actuator. A T-shaped plate is slidably connected to the outer side of the output shaft of the second electric actuator. A spring is disposed at the rear end of the T-shaped plate. One end of the spring is fixedly connected to the T-shaped plate, and the other end of the spring is fixedly connected to the housing of the CCD camera.

[0009] Preferably, a third electric actuator is provided on one side of the guide frame. The third electric actuator is located at the axial center of the fixed ring. The output shaft of the third electric actuator is surrounded by four fourth electric actuators via a locking block. The output shaft of the fourth electric actuator is fixedly connected to a flexible grinding strip. An infrared probe is provided at the rear end of the output shaft of the third electric actuator.

[0010] Preferably, the demolding mechanism includes a maintenance component for cleaning the mold, and a removal component for removing the plastic sheet.

[0011] Preferably, the maintenance assembly includes four fifth electric actuators. The synchronization plate of the fifth electric actuators is fixedly connected to the output shaft of the robotic arm. The output shafts of the four fifth electric actuators are jointly fixedly connected to a mounting box. The front end of the mounting box has a through hole. Two limiting shafts are fixedly connected to the inner side of the mounting box. The outer sides of the two limiting shafts are rotatably connected to mutually meshing second gears. The front end of the second gear has multiple slots. The front end of the limiting shaft is fixedly connected to a circular plate. A fifth motor is installed on one side of the mounting box. The output shaft of the fifth motor is fixedly connected to a third gear. The outer side of the third gear meshes with one of the two second gears.

[0012] Preferably, a triangular plate is fixedly connected to one side of each of the two sets of circular plates that are close to each other. An eight-shaped groove is formed between the mounting box and the circular plate. A connecting shaft is slidably connected to the inner side of the eight-shaped groove. Two sets of mutually symmetrical guide plates are fixedly connected to the outer side of the connecting shaft. A round shaft is fixedly connected to the lower end of the connecting shaft. The round shaft is located inside the slot.

[0013] Preferably, a miniature air pump is provided at the front end of the connecting shaft, a fixed sleeve is rotatably connected to the outer side of the housing of the miniature air pump near the output port, a blade is rotatably connected to the inner side of the fixed sleeve, a plurality of flexible sweeping rods are fixedly connected to the outer side of the fixed sleeve, and a spray pipe is fixedly connected to the front end of the fixed sleeve.

[0014] Preferably, the removal assembly includes a sixth electric actuator, which is mounted on the other side of the output shaft of the robotic arm via a plate. The output shaft of the sixth electric actuator is equipped with two electric grippers, and a grating sensor is mounted near the center of the housing of the electric grippers.

[0015] Compared with the prior art, the present invention provides a molding die for the lower shell structure of a target aircraft fuselage plate, which has the following advantages:

[0016] 1. By using a T-shaped plate and spring, the device can adapt to minor dimensional deviations at the front end of the recycled plastic shell. Rotating with the mounting plate, it cleans burrs around the edges, avoiding the irregularities inherent in manual finishing. The flexible polishing strip, adjusted by the fourth electric push rod, effectively removes particle protrusions and air bubbles caused by uneven melting of the recycled material on the inner wall of the shell, solving the problem of incomplete inner wall treatment in existing technologies. A CCD camera, extending and retracting with the second electric push rod, adjusts the detection position, avoiding the shell's wing structure to monitor defects such as scratches and dents on the outer side of the recycled plastic shell in real time. Combined with an infrared probe at the rear of the third electric push rod, it precisely positions the shell's axis, ensuring the finishing action is coaxial with the shell. This avoids the risk of defective products flowing out due to pre-forming and post-inspection in existing technologies, improving the yield of qualified finished products.

[0017] 2. Through the cooperation of the second gear and the figure-eight sliding groove, the maintenance component drives the micro air pump to form a motion trajectory covering the entire cavity of the punch mold. The high-pressure airflow is injected into the cavity gap through the nozzle, and with the rotation of the flexible sweeping rod, the recycled plastic residue on the inner wall of the cavity and the outer side of the punch can be cleaned simultaneously. The entire cleaning can be completed without disassembling the mold. By using the robotic arm in the removal component with the sixth electric push rod, the height and position of the electric clamp can be flexibly adjusted. The grating sensor calibrates the gripping position in real time to avoid gripping misalignment caused by slight displacement of the recycled plastic shell. The gripper design of the electric clamp is adapted to the brittle characteristics of the recycled material shell to prevent gripping damage. Compared with the existing technology of manual part removal, it improves the part removal efficiency and reduces the shell breakage rate.

[0018] 3. The cavity design provides space for shrinkage compensation, adapting to the shrinkage characteristics of different batches of recycled materials; the fourth electric push rod adjusts the contact range of the flexible grinding strip, adapting to recycled plastic shells of different wall thicknesses. This eliminates the need to replace the entire mold set, meeting the molding needs of various recycled materials. Compared to existing technologies that only adapt to a single material type, this increases mold reuse rate and reduces mold manufacturing costs and resource consumption. The cleaning process of the repair components utilizes high-pressure airflow and a flexible sweeping rod, eliminating the use of chemical cleaning agents and preventing contamination of the recycled plastic shells. Real-time detection and precise trimming of the trimming components reduce shell scrap due to defects. Combined with the cavity shrinkage compensation design, this further reduces recycled material waste, meeting the environmental protection requirements of the plastic waste recycling field. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the trimming mechanism of the present invention;

[0022] Figure 4This is a schematic cross-sectional view of a portion of the trimming mechanism of the present invention. Figure 1 ;

[0023] Figure 5 This is a schematic cross-sectional view of a portion of the trimming mechanism of the present invention. Figure 2 ;

[0024] Figure 6 This is a schematic cross-sectional view of a portion of the trimming mechanism of the present invention. Figure 3 ;

[0025] Figure 7 This is a schematic diagram of the overall structure of the demolding mechanism of the present invention;

[0026] Figure 8 This is a cross-sectional view of the overall structure of the repair component of the present invention;

[0027] Figure 9 This is a schematic diagram of the repair component structure of the present invention. Figure 1 ;

[0028] Figure 10 This is a schematic diagram of the repair component structure of the present invention. Figure 2 ;

[0029] Figure 11 This is a schematic diagram of the repair component structure of the present invention. Figure 3 ;

[0030] Figure 12 This is a schematic diagram of the overall structure of the component removal in this invention.

[0031] In the diagram: 1. Workbench; 2. Injection tube; 3. Die; 4. Dressing mechanism; 41. Moving component; 411. Fixed frame; 412. First motor; 413. First threaded rod; 414. Slide rod; 415. Slider; 416. First electric actuator; 417. Connecting rod; 418. External gear ring; 419. Fixed ring; 4110. Mounting plate; 4111. Second motor; 4112. First gear; 4113. Pulley; 42. Dressing component; 421. Third motor; 422. Guide frame; 423. Opposing threaded rod; 424. Fourth motor; 425. Moving block; 426. Second electric actuator; 427. CCD camera; 428. T-shaped plate; 429. Spring; 4210. Third electric actuator ; 4211, Fourth electric actuator; 4212, Flexible grinding strip; 5, Guide rod; 6, Punch mold; 7, Hydraulic cylinder; 8, Robotic arm; 9, Demolding mechanism; 91, Repair component; 911, Mounting box; 912, Second gear; 913, Fifth motor; 914, Third gear; 915, Slot; 916, Round shaft; 917, Connecting shaft; 918, Guide plate; 919, Miniature air pump; 9110, Fixing sleeve; 9111, Blade; 9112, Flexible sweeping rod; 9113, Nozzle; 9114, Limiting shaft; 9115, Round plate; 9116, Triangular plate; 9117, Fifth electric actuator; 92, Removal component; 921, Sixth electric actuator; 922, Electric clamp; 923, Grating sensor. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] The following electrical components are all electrically connected via an external PLC controller.

[0034] Please see Figures 1-12 A molding die for the lower shell structure of a target machine body plate includes a worktable 1. An injection tube 2 is installed on the upper end of the worktable 1. A concave mold 3 is fixedly connected to the upper end of the worktable 1. A trimming mechanism 4 for processing plastic plates is provided on the inner side of the concave mold 3. The trimming mechanism 4 includes a moving component 41 for moving the processed plate and a trimming component 42 for processing the edge and inner wall of the plate. Four guide rods 5 are fixedly connected to the front end of the concave mold 3. A convex mold 6 is slidably connected to the outer side of the four guide rods 5. A hydraulic cylinder 7 is provided at the front end of the worktable 1. The output shaft of the hydraulic cylinder 7 is fixedly connected to the convex mold 6. A robotic arm 8 is provided at the upper end of the worktable 1. A demolding mechanism 9 for processing the mold is provided on the output shaft of the robotic arm 8.

[0035] In this embodiment, the trimming mechanism 4 includes a fixed frame 411 fixedly connected to the concave mold 3. A first motor 412 is installed on the upper end of the fixed frame 411. A first threaded rod 413 is rotatably connected to the inner side of the fixed frame 411 near one side. The output shaft of the first motor 412 is fixedly connected to the first threaded rod 413. A slide rod 414 is rotatably connected to the inner side of the fixed frame 411 near the other side. Two sliders 415 are slidably connected to the inner side of the fixed frame 411. One of the two sliders 415 is threadedly connected to the first threaded rod 413, and the other slider 415 is slidably connected to the slide rod 414.

[0036] Specifically, the fixed frame 411 provides overall mounting support for the moving component 41, ensuring the stability of each component's position; the first motor 412 provides power for the transmission, driving the first threaded rod 413 to rotate through the output shaft; the first threaded rod 413 converts the rotational motion into linear motion through threaded transmission, driving the connected slider 415 to move vertically; the slide rod 414 acts as a guide and limiter for the other slider 415, preventing the slider 415 from deviating during movement and ensuring that the two sliders 415 move synchronously and smoothly; the two sliders 415 jointly support the first electric push rod 416 and the subsequent trimming component 42, and adjust the distance between the trimming component 42 and the front forming shell of the concave mold 3 by moving up and down, laying the positional foundation for the subsequent trimming action on the recycled plastic shell.

[0037] In this embodiment, a first electric push rod 416 is provided at the front end of the slider 415. The output shaft of the first electric push rod 416 is fixedly connected to a connecting rod 417. The other ends of the two connecting rods 417 are fixedly connected to an external gear ring 418. A fixed ring 419 is fixedly connected to the front end of the external gear ring 418. A mounting plate 4110 is provided at the front end of the fixed ring 419. A second motor 4111 is mounted on the outside of the mounting plate 4110. A first gear 4112 is fixedly connected to the output shaft of the second motor 4111. The outside of the first gear 4112 meshes with the external gear ring 418. Four pulleys 4113 are rotatably connected to the outside of the second motor 4111. The outside of the pulleys 4113 are rotatably connected to the fixed ring 419.

[0038] Specifically, the first electric push rod 416, through the horizontal extension and retraction of its output shaft, drives the connecting rod 417 and subsequent components such as the external gear ring 418 and the fixed ring 419 to be laterally offset from the concave mold 3, preventing the trimming component 42 from colliding with the edge of the cavity of the concave mold 3; the connecting rod 417 connects the first electric push rod 416 and the external gear ring 418, ensuring stable power transmission; the external gear ring 418 and the first gear 4112 cooperate to form a meshing transmission structure, providing a transmission basis for the rotation of the mounting plate 4110; the fixed ring 419 is fixed to the front end of the external gear ring 418 on one hand, and provides rolling support for the pulley 4113 on the other hand; the mounting plate 4110 serves as the mounting carrier for the trimming component 42, bearing... The system includes components such as a third motor 421 and a guide frame 422; a second motor 4111 provides power for the rotational motion, driving the first gear 4112 to rotate via its output shaft; the first gear 4112, through meshing with the outer gear ring 418, transmits the power of the second motor 4111 to the mounting plate 4110, driving the mounting plate 4110 to rotate around the center of the outer gear ring 418; four pulleys 4113 roll along the inner side of the fixed ring 419, which both limits the rotation of the mounting plate 4110, preventing the mounting plate 4110 from shifting, and reduces the frictional resistance when the mounting plate 4110 rotates, ensuring smooth rotation and providing a stable movement trajectory for the trimming component 42 to surround the grinding and recycling plastic shell.

[0039] In this embodiment, the trimming component 42 includes a third motor 421 disposed at the lower end of the mounting plate 4110. The output shaft of the third motor 421 is fixedly connected to a guide frame 422. A counter-threaded rod 423 is rotatably connected to the inner side of the guide frame 422. A fourth motor 424 is installed at the lower end of the guide frame 422. The output shaft of the fourth motor 424 is fixedly connected to the counter-threaded rod 423. Two mutually symmetrical moving blocks 425 are threadedly connected to the outer side of the counter-threaded rod 423. The moving blocks 425 are slidably connected to the inner side of the guide frame 422. A second electric push rod 426 is disposed on the inner side of the moving blocks 425. A CCD camera 427 is disposed on the output shaft of the second electric push rod 426. A T-shaped plate 428 is slidably connected to the outer side of the output shaft of the second electric push rod 426. A spring 429 is disposed at the rear end of the T-shaped plate 428. One end of the spring 429 is fixedly connected to the T-shaped plate 428, and the other end of the spring 429 is fixedly connected to the housing of the CCD camera 427.

[0040] Specifically, the third motor 421 drives the guide frame 422 to rotate around the lower end of the mounting plate 4110 via its output shaft, adjusting the angle of the guide frame 422 to be perpendicular to the housing axis to ensure that subsequent trimming actions are coaxial with the recycled plastic housing; the guide frame 422 provides installation and guiding space for the opposing threaded rod 423 and the moving block 425, restricting the movement direction of the moving block 425; the opposing threaded rod 423 has a bidirectional thread, which can drive the two moving blocks 425 to open or close synchronously in opposite directions by rotation; the fourth motor 424 provides power for the rotation of the opposing threaded rod 423, driving the opposing threaded rod 423 to rotate via its output shaft; the two moving blocks 425 carry the second electric push rod 426, the CCD camera 427 and the T-shaped plate 428, and the T-shaped plate 428 is realized by opposing movement. The fit and adjustment of the front end cut contour of the housing; the second electric push rod 426 extends and retracts through the output shaft, pushing the CCD camera 427 to move outward of the housing, adjusting the detection distance between the CCD camera 427 and the housing; the CCD camera 427 is used to detect surface defects (such as scratches, dents, bubble residue, etc.) on the outside of the recycled plastic housing in real time, adapting to the characteristics of recycled plastic being prone to defects; the T-shaped plate 428 is used to fit the front edge of the housing, cleaning the burrs and flash at the front end of the housing when it rotates with the mounting plate 4110, solving the problem of burrs easily generated after the recycled plastic is cured; the spring 429, through elastic force, makes the T-shaped plate 428 adapt to the small dimensional deviations of the front end of the recycled plastic housing, ensuring that the T-shaped plate 428 is always in close contact with the housing surface, improving the burr cleaning effect.

[0041] In this embodiment, a third electric actuator 4210 is provided on one side of the guide frame 422. The third electric actuator 4210 is located at the axial center of the fixed ring 419. The output shaft of the third electric actuator 4210 is surrounded by four fourth electric actuators 4211 through a locking block. The output shaft of the fourth electric actuator 4211 is fixedly connected to a flexible grinding strip 4212. An infrared probe is provided at the rear end of the output shaft of the third electric actuator 4210.

[0042] Specifically, the third electric push rod 4210 extends and retracts along the axial direction of the fixed ring 419, driving the four fourth electric push rods 4211 and the flexible grinding strip 4212 to simultaneously extend into or retract from the inner cavity of the recycled plastic shell, adjusting the relative position of the grinding assembly and the inner cavity of the shell; the four fourth electric push rods 4211 extend and retract through the output shaft, pushing the flexible grinding strip 4212 towards the inner wall of the shell until the flexible grinding strip 4212 is in close contact with the inner wall of the shell, adapting to recycled plastic shells of different wall thicknesses; the flexible grinding strip 4212 is made of flexible material to avoid scratching the relatively brittle inner wall surface of the recycled plastic shell, and at the same time, through friction with the inner wall of the shell, it removes particle protrusions and bubble residues caused by uneven melting of recycled plastic on the inner wall; the infrared probe is used to scan the opening end of the recycled plastic shell, accurately locate the axial position of the shell, and ensure that the third electric push rod 4210 drives the grinding assembly to move along the axial direction, so that the flexible grinding strip 4212 evenly covers the inner wall of the shell, improving the grinding accuracy.

[0043] In this embodiment, the demolding mechanism 9 includes a maintenance component 91 for cleaning the mold and a removal component 92 for removing the plastic sheet.

[0044] Specifically, the repair component 91 is used to clean the inner wall and gaps of the cavity of the punch 6 to remove residual recycled plastic particles and debris, so as to prevent residual impurities from contaminating the recycled plastic melt for the next injection, ensuring the mold cavity is clean and adapting to the characteristic that recycled plastic is prone to residue; the removal component 92 is used to remove the finished recycled plastic shell from the front end of the concave mold 3 after repair, realizing automated part removal after molding, improving production efficiency, and avoiding damage to the shell that may be caused by manual part removal.

[0045] In this embodiment, the maintenance component 91 includes four fifth electric actuators 9117. The synchronization plate of the fifth electric actuators 9117 is fixedly connected to the output shaft of the robotic arm 8. The output shafts of the four fifth electric actuators 9117 are fixedly connected to a mounting box 911. The front end of the mounting box 911 has a through hole. The inner side of the mounting box 911 is fixedly connected to two limiting shafts 9114. The outer sides of the two limiting shafts 9114 are rotatably connected to mutually meshing second gears 912. The front end of the second gears 912 has multiple slots 915. The front end of the limiting shafts 9114 is fixedly connected to a circular plate 9115. A fifth motor 913 is installed on one side of the mounting box 911. The output shaft of the fifth motor 913 is fixedly connected to a third gear 914. The outer side of the third gear 914 meshes with one of the two second gears 912.

[0046] Specifically, four fifth electric actuators 9117 are connected to the robotic arm 8 via a synchronization plate, and together adjust the distance between the mounting box 911 and the punch 6 through the extension and retraction of the output shaft, ensuring that the subsequent cleaning components can fit into the cavity of the punch 6. The mounting box 911 provides installation space for components such as the second gear 912, the fifth motor 913, and the third gear 914, and the front through hole is a reserved channel for the movement of the connecting shaft 917. Two limiting shafts 9114 are fixed inside the mounting box 911, providing rotational support and limiting for the two second gears 912, preventing the second gears 912 from shifting during rotation. The two second gears 912 mesh with each other, achieving reverse synchronous rotation through meshing transmission, which is necessary for connection. The movement of shaft 917 provides the basis for power transmission; slot 915 is opened at the front end of the second gear 912 for engaging with the round shaft 916, converting the rotational motion of the second gear 912 into the trajectory movement of the round shaft 916; round plate 9115 is fixed at the front end of the limiting shaft 9114, and cooperates with the mounting box 911 to form a figure-eight sliding groove, providing a track for the sliding of the connecting shaft 917; the fifth motor 913 provides power for the gear transmission, driving the third gear 914 to rotate through the output shaft; the third gear 914, by meshing with one of the second gears 912, transmits the power of the fifth motor 913 to the second gear 912, driving the two second gears 912 to rotate synchronously in opposite directions.

[0047] In this embodiment, a triangular plate 9116 is fixedly connected to one side of the two sets of circular plates 9115 that are close to each other. An eight-shaped groove is formed between the mounting box 911 and the circular plates 9115. A connecting shaft 917 is slidably connected to the inner side of the eight-shaped groove. Two sets of mutually symmetrical guide plates 918 are fixedly connected to the outer side of the connecting shaft 917. A round shaft rod 916 is fixedly connected to the lower end of the connecting shaft 917. The round shaft rod 916 is set inside the slot 915.

[0048] Specifically, the triangular plate 9116 is fixed to one side of the circular plate 9115, and is used to guide the guide plate 918 when the connecting shaft 917 moves to the intersection of the figure-eight trajectory, ensuring that the connecting shaft 917 smoothly switches the direction of movement along the predetermined track; the figure-eight groove is formed by the mounting box 911 and the circular plate 9115, and its trajectory covers the entire cavity of the punch 6, providing a comprehensive movement path for the connecting shaft 917, ensuring that the miniature air pump 919 can clean the cavity of the punch 6 without dead angles; the connecting shaft 917 carries the miniature On the other hand, the air pump 919 slides along the figure-eight groove, driving the micro air pump 919 to achieve multi-directional cleaning; two sets of guide plates 918 are symmetrically fixed on the outside of the connecting shaft 917, used to cooperate with the triangular plate 9116 to prevent the connecting shaft 917 from deviating when sliding in the figure-eight groove, ensuring accurate movement trajectory; the round shaft rod 916 is fixed at the lower end of the connecting shaft 917 and is engaged in the slot 915 of the second gear 912, transmitting the rotational power of the second gear 912 to the connecting shaft 917, driving the connecting shaft 917 to move along the figure-eight groove.

[0049] In this embodiment, a miniature air pump 919 is provided at the front end of the connecting shaft 917. A fixed sleeve 9110 is rotatably connected to the outer side of the housing of the miniature air pump 919 near the output port. A blade 9111 is rotatably connected to the inner side of the fixed sleeve 9110. Multiple flexible sweeping rods 9112 are fixedly connected to the outer side of the fixed sleeve 9110. A nozzle 9113 is fixedly connected to the front end of the fixed sleeve 9110.

[0050] Specifically, the miniature air pump 919 outputs high-pressure airflow to power the cleaning action, adapting to the cleaning needs of recovering residual plastic microparticles; the fixed sleeve 9110 is rotatably connected to the outside of the miniature air pump 919 housing, supporting the blades 9111, flexible sweeping bar 9112, and nozzle 9113, and can also rotate around the output port of the miniature air pump 919; the blades 9111 are located inside the fixed sleeve 9110 and rotate under the action of the high-pressure airflow output by the miniature air pump 919, driving the fixed sleeve 9110 to rotate synchronously; multiple A flexible sweeping rod 9112 is fixed to the outside of the fixed sleeve 9110. When the fixed sleeve 9110 rotates, it sweeps and cleans the inner wall of the cavity of the punch 6 and the outside of the internal punch, removing residual recycled plastic particles and debris. The flexible material avoids scratching the mold cavity. The spray pipe 9113 is fixed to the front end of the fixed sleeve 9110. After pressurizing the high-pressure airflow output by the micro air pump 919, it is precisely injected into the gaps and dead corners of the cavity of the punch 6 to clean the small recycled plastic residues attached to the gaps, ensuring that the mold cavity is thoroughly clean.

[0051] In this embodiment, the removal component 92 includes a sixth electric actuator 921, which is mounted on the other side of the output shaft of the robotic arm 8 via a plate. The output shaft of the sixth electric actuator 921 is provided with two electric grippers 922, and a grating sensor 923 is provided near the middle of the housing of the electric gripper 922.

[0052] Specifically, the sixth electric actuator 921 is connected to the output shaft of the robotic arm 8 via a plate. The height of the electric gripper 922 is adjusted by extending and retracting the output shaft to match the lifting height of the front-end forming shell of the concave mold 3. The two electric grippers 922 are used to close the gripper jaws during lifting to clamp and recycle the finished plastic shell, achieving stable gripping of the shell and preventing the shell from falling off or being damaged during the lifting process. The grating sensor 923 is located near the middle of the housing of the electric gripper 922. It is used to scan the position of the front-end forming shell of the concave mold 3 in real time, accurately calibrate the gripping position of the electric gripper 922, and avoid gripping misalignment caused by slight displacement of the recycled plastic shell, ensuring accurate and efficient lifting action.

[0053] Working principle: During use, the hydraulic cylinder 7 is activated to drive the punch 6 to move linearly along the guide rod 5, so that the punch 6 and the die 3 are precisely aligned and form a sealed cavity. This sealing structure can prevent overflow problems caused by fluctuations in the fluidity of the recycled plastic melt. Then, the injection tube 2 is activated to inject the pre-treated recycled plastic melt into the cavity formed by the die 3 and the punch 6. The cavity design is adapted to the shrinkage characteristics of the recycled material. By reserving a shrinkage compensation gap of 0.5-1mm, the shrinkage defects that occur after the recycled material cools are reduced. Finally, two symmetrical cylindrical shells with winglets are formed in the cavity. After the melt has completely cooled and solidified, the hydraulic cylinder 7 is activated again to drive the punch 6 to reset along the guide rod 5. At this time, the formed shell is left at the front end of the die 3.

[0054] Two first electric actuators 416 are activated, their output shafts moving horizontally. This, via connecting rod 417, causes the external gear ring 418, fixed ring 419, and other components of the trimming mechanism 4 to be laterally offset from the concave mold 3, preventing the trimming component 42 from colliding with the edge of the concave mold 3 cavity. Subsequently, the first motor 412 is activated, causing the first threaded rod 413 to rotate around the inner side of the fixed frame 411. The first threaded rod 413 drives a corresponding slider 415 to move downwards vertically via threaded transmission. This slider 415, via the first electric actuators 416, drives the connecting rod 417 to move downwards synchronously. The connecting rod 417, via the external gear ring 418... The other slider 415 is driven to slide smoothly along the slide bar 414, and finally the two sliders 415 together drive the first electric push rod 416 and the subsequent trimming component 42 to move downward along the fixed frame 411, gradually approaching the forming shell at the front end of the concave mold 3. The third motor 421 is started, driving the guide frame 422 to rotate around the lower end of the mounting plate 4110. The angle of the guide frame 422 is adjusted to be perpendicular to the shell axis. The infrared probe at the rear end of the output shaft of the third electric push rod 4210 scans the opening end of the shell to accurately locate the shell axis position, ensuring that the subsequent trimming action is coaxial with the shell. After the positioning is completed, the first motor 412 stops rotating.

[0055] Because during the injection molding process, the front end of the shell, far from the inlet, is prone to air bubbles due to insufficient melt filling pressure and volatile accumulation during the injection molding process, and trace impurities in the recycled material can easily lead to burrs and cavity defects after the front end solidifies, targeted treatment of the front end and inner wall of the shell is required; the fourth motor 424 is started to drive the opposing threaded rod 423 to rotate inside the guide frame 422. The opposing threaded rod 423 drives two moving blocks 425 to open or close oppositely along the inner side of the guide frame 422 through bidirectional thread transmission until the included angle of the two T-shaped plates 428 approaches and fits the outline of the front end cut of the shell; the second electric actuator 426 is started to push the CCD camera 427 to move outward of the shell, CC During the movement of the D camera 427, its housing is pulled by the spring 429 to keep the T-shaped plate 428 close to the front edge of the housing. The elastic force of the spring 429 can adapt to the small dimensional deviations of the front end of the housing, ensuring that the T-shaped plate 428 is always in contact with the housing surface. The third electric push rod 4210 is activated, and its output shaft extends into the inner cavity of the housing along the axis of the housing, driving the four fourth electric push rods 4211 to enter the housing at the same time. Then, the fourth electric push rods 4211 are activated to push the flexible grinding strip 4212 to move towards the inner wall of the housing until the flexible grinding strip 4212 is in close contact with the inner wall of the housing. The flexible material can avoid scratching the relatively brittle inner wall surface of the recycled material housing, and at the same time adapt to the small unevenness of the inner wall of the housing.

[0056] The second motor 4111 is started, driving the first gear 4112 to rotate around the motor output shaft. The first gear 4112, through meshing with the external gear ring 418, drives the mounting plate 4110 to rotate around the center of the external gear ring 418. The four pulleys 4113 on the outer side of the mounting plate 4110 roll along the inner side of the fixed ring 419, which not only limits the rotation of the mounting plate 4110, but also reduces the frictional resistance during the rotation process. When the mounting plate 4110 rotates, it synchronously drives the dressing assembly 42 to rotate as a whole, so that the flexible grinding strip 4212 moves along the housing. The inner wall moves in a circular motion to remove particle protrusions and air bubbles caused by uneven melting of recycled materials on the inner wall of the shell through friction. At the same time, the T-shaped plate 428 moves in a circular motion along the front edge of the shell to clean the burrs and flash at the front. During this process, the second electric push rod 426 can adjust the position of the CCD camera 427 through the telescopic output shaft to avoid the wing structure of the shell and to detect surface defects such as scratches and dents on the outer side of the shell in real time. The spring 429 always keeps the T-shaped plate 428 in contact with the shell to ensure that grinding and inspection are carried out simultaneously and accurately.

[0057] After the repair component 42 completes the shell treatment, the robotic arm 8 is activated. Its output shaft drives the demolding mechanism 9 to move to the working area between the concave mold 3 and the convex mold 6. Through the multi-axis adjustment function of the robotic arm 8, the repair component 91 is aligned with the cavity opening of the convex mold 6. The fifth motor 913 is activated to drive the third gear 914 to rotate. The third gear 914 drives the second gear 912 to rotate around the limiting shaft 9114 through meshing with one of the second gears 912. Since the two second gears 912 are meshed with each other, they synchronously drive the other second gear 912 to rotate in the opposite direction. When the second gear 912 rotates, its front end slot 915 engages with the round shaft 916. In coordination, the round shaft 916 moves along the track of the slot 915, and the round shaft 916 in turn drives the connecting shaft 917 to move along the figure-eight sliding groove formed between the mounting box 911 and the round plate 9115. The two sets of guide plates 918 on the outer side of the connecting shaft 917 rotate and are offset from the outer side of the round plate 9115, and then contact the straight edge of the triangular plate 9116. When the guide plate 918 moves to the intersection of the figure-eight track, it travels along the predetermined track under the guidance of the straight edge and is received by the slot 915 of the second gear 912 on the other side. It continues to make circular motion with the second gear 912, and finally makes the miniature air pump 919 at one end of the connecting shaft 917 form a figure-eight motion track covering the entire cavity of the punch 6.

[0058] The micro air pump 919 is activated, and its output shaft outputs high-pressure airflow. The airflow enters the inner side of the fixed sleeve 9110 and drives the blades 9111 to rotate. The blades 9111 drive the fixed sleeve 9110 to rotate around the output port of the micro air pump 919. Multiple flexible sweeping rods 9112 on the outer side of the fixed sleeve 9110 rotate synchronously with the fixed sleeve 9110, sweeping and cleaning the inner wall of the cavity of the punch 6 and the outer side of the internal punches to remove residual recycled plastic particles and debris. At the same time, the high-pressure airflow is pressurized and ejected through the nozzle 9113 at the front end of the fixed sleeve 9110, precisely injecting into the gaps and dead corners of the cavity of the punch 6 to clean the small recycled material residues adhering to the gaps, preventing contamination of the new recycled plastic melt during the next molding. The fifth electric push rod 9117 is activated, and its output shaft adjusts the distance between the mounting box 911 and the punch 6 by telescopic adjustment. The flexible sweeping bar 9112 and nozzle 9113 can cover all areas of the cavity of the punch 6, completing the comprehensive cleaning of the punch 6. After the trimming mechanism 4 completes the shell trimming and inspection, and the repair component 91 completes the cleaning of the punch 6, the sixth electric push rod 921 is activated. The height of the electric clamp 922 is adjusted by extending and retracting its output shaft. At the same time, in coordination with the multi-axis movement of the robotic arm 8, the electric clamp 922 is aligned with the molding shell at the front end of the concave mold 3. The grating sensor 923 on the housing of the electric clamp 922 scans the position of the shell in real time and accurately calibrates the gripping position of the electric clamp 922 to avoid misalignment due to slight deviation of the shell. After calibration, the electric clamp 922 is activated, and its jaws close to clamp the shell. Then, the finished shell is removed from the front end of the concave mold 3 by the movement of the robotic arm 8, completing the single recycling plastic molding and demolding process.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die for the lower shell structure of a target drone fuselage plate, comprising a worktable, characterized in that: An injection molding tube is installed at the upper end of the workbench. A concave mold is fixedly connected to the upper end of the workbench. A trimming mechanism for processing plastic sheets is provided on the inner side of the concave mold. The trimming mechanism includes a moving component for moving the processed sheet and a trimming component for processing the edge and inner wall of the sheet. Four guide rods are fixedly connected to the front end of the concave mold. A convex mold is slidably connected to the outer side of the four guide rods. A hydraulic cylinder is provided at the front end of the workbench. The output shaft of the hydraulic cylinder is fixedly connected to the convex mold. A robotic arm is provided at the upper end of the workbench. A demolding mechanism for processing molds is provided on the output shaft of the robotic arm. The trimming mechanism includes a fixed frame fixedly connected to the concave mold. A first motor is installed at the upper end of the fixed frame. A first threaded rod is rotatably connected to the inner side of the fixed frame near one side. The output shaft of the first motor is fixedly connected to the first threaded rod. A sliding rod is rotatably connected to the inner side of the fixed frame near the other side. Two sliders are slidably connected to the inner side of the fixed frame. One of the two sliders is threadedly connected to the first threaded rod, and the other slider is slidably connected to the sliding rod. The front end of the slider is provided with a first electric push rod, the output shaft of the first electric push rod is fixedly connected to a connecting rod, the other ends of the two connecting rods are fixedly connected to an external gear ring, the front end of the external gear ring is fixedly connected to a fixed ring, the front end of the fixed ring is provided with a mounting plate, a second motor is mounted on the outside of the mounting plate, the output shaft of the second motor is fixedly connected to a first gear, the outside of the first gear meshes with the external gear ring, and four pulleys are rotatably connected to the outside of the second motor, the outside of the pulleys are rotatably connected to the fixed ring; The trimming assembly includes a third motor located at the lower end of the mounting plate. The output shaft of the third motor is fixedly connected to a guide frame. A counter-threaded rod is rotatably connected to the inner side of the guide frame. A fourth motor is installed at the lower end of the guide frame. The output shaft of the fourth motor is fixedly connected to the counter-threaded rod. Two mutually symmetrical moving blocks are threadedly connected to the outer side of the counter-threaded rod. The moving blocks are slidably connected to the inner side of the guide frame. A second electric push rod is located inside the moving blocks. A CCD camera is located on the output shaft of the second electric push rod. A T-shaped plate is slidably connected to the outer side of the output shaft of the second electric push rod. A spring is located at the rear end of the T-shaped plate. One end of the spring is fixedly connected to the T-shaped plate, and the other end of the spring is fixedly connected to the housing of the CCD camera. A third electric actuator is provided on one side of the guide frame. The third electric actuator is located at the axial center of the fixed ring. The output shaft of the third electric actuator is surrounded by four fourth electric actuators through a locking block. The output shaft of the fourth electric actuator is fixedly connected to a flexible grinding strip. An infrared probe is provided at the rear end of the output shaft of the third electric actuator.

2. The mold for forming the lower shell structure of a target drone fuselage plate according to claim 1, characterized in that: The demolding mechanism includes maintenance components for cleaning the mold and removal components for removing the plastic sheet.

3. The mold for forming the lower shell structure of a target drone fuselage plate according to claim 2, characterized in that: The maintenance assembly includes four fifth electric actuators, which are fixedly connected to the output shaft of the robotic arm via a synchronization plate. The output shafts of the four fifth electric actuators are all fixedly connected to a mounting box. The front end of the mounting box has a through hole, and two limiting shafts are fixedly connected to the inner side of the mounting box. The outer sides of the two limiting shafts are rotatably connected to meshing second gears. The front end of the second gears has multiple slots, and a circular plate is fixedly connected to the front end of the limiting shafts. A fifth motor is mounted on one side of the mounting box, and the output shaft of the fifth motor is fixedly connected to a third gear. The outer side of the third gear meshes with one of the two second gears.

4. The mold for forming the lower shell structure of a target drone fuselage plate according to claim 3, characterized in that: Triangular plates are fixedly connected to the sides of the two sets of circular plates that are close to each other. An eight-shaped groove is formed between the mounting box and the circular plates. A connecting shaft is slidably connected to the inner side of the eight-shaped groove. Two sets of mutually symmetrical guide plates are fixedly connected to the outer side of the connecting shaft. A round shaft is fixedly connected to the lower end of the connecting shaft. The round shaft is set inside the slot.

5. The mold for forming the lower shell structure of a target drone fuselage plate according to claim 4, characterized in that: A miniature air pump is provided at the front end of the connecting shaft. A fixed sleeve is rotatably connected to the outer side of the housing of the miniature air pump near the output port. A blade is rotatably connected to the inner side of the fixed sleeve. Multiple flexible sweeping rods are fixedly connected to the outer side of the fixed sleeve. A spray pipe is fixedly connected to the front end of the fixed sleeve.

6. The mold for forming the lower shell structure of a target drone fuselage plate according to claim 2, characterized in that: The removal assembly includes a sixth electric actuator, which is mounted on the other side of the robotic arm's output shaft via a plate. The output shaft of the sixth electric actuator is equipped with two electric grippers, and a grating sensor is mounted near the center of the housing of each electric gripper.

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