Search

CN-121798803-B - Sectional forming die for controlling liquid quantity of flying fish-imitating unmanned aerial vehicle

CN121798803BCN 121798803 BCN121798803 BCN 121798803BCN-121798803-B

Abstract

The invention discloses a block forming die for controlling liquid quantity of a flying fish-like aviation unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle part manufacturing; the mold comprises a mold frame, a lower mold, an upper mold and an injection assembly, wherein the upper mold is formed by adopting a turtle shell split type design and is formed by splicing a plurality of shell units through a sawtooth structure in a meshed mode, sealing silica gel is filled in joints, nondestructive mold opening of complex curved surface components is achieved, the injection assembly is integrated with a pressure sensor, and a spiral conveying and pressurizing injection structure is matched, so that closed-loop accurate control of resin injection amount and glue injection pressure is achieved, and defects such as dry spots and layering are effectively reduced. The invention has the characteristics of high-precision molding and easy mold opening, and remarkably improves the quality consistency and the production efficiency of the composite material component.

Inventors

  • Ouyang yulin
  • LUO XINCHENG
  • LIAO DAHAI
  • WANG WEI
  • YUE JIANBO
  • LI YONG
  • RAO SHUILIN
  • ZHOU XIN
  • Shao Guokai

Assignees

  • 江西昌兴航空装备股份有限公司

Dates

Publication Date
20260508
Application Date
20260312

Claims (10)

  1. 1. A imitative flying fish unmanned aerial vehicle's controllable liquid volume's blocking type forming die, its characterized in that includes: the die comprises a die frame (1), wherein the die frame (1) consists of a bottom plate (11), a top plate (12) and a plurality of struts (13) connected between the bottom plate (11) and the top plate (12), and a plurality of hydraulic cylinders (5) are arranged on the top plate (12); The lower die (2) is fixed on the bottom plate (11) through a lower supporting rod (21); The upper die (3) is positioned above the lower die (2), the upper die (3) is formed by butt joint of a plurality of shell units (31) in a turtle shell splitting mode, the adjacent shell units (31) are meshed through a sawtooth structure (32), so that the adjacent shell units (31) form up-down displacement limitation, part of the shell units (31) are connected with telescopic rods of a plurality of hydraulic cylinders (5) in a one-to-one correspondence manner, the rest of the shell units (31) are linked under the driving of the adjacent shell units (31), sealing silica gel is filled in the sawtooth structure (32) between the adjacent shell units (31), the shell units (31) in the middle are provided with a glue injection runner (311), and the top surface of the lower die (2) is provided with a simulated flying fish unmanned aerial vehicle curved surface topological structure cavity (6) communicated with the glue injection runner (311); Injection subassembly (4), injection subassembly (4) install the middle part of last mould (3) shell unit (31) top surface, just injection mouth of injection subassembly (4) with the top intercommunication of injecting glue runner (311), pressure sensor (41) of injection subassembly (4) are installed the bottom of injecting glue runner (311).
  2. 2. The block forming die for the unmanned aerial vehicle capable of simulating flying fish to control liquid amount according to claim 1, wherein the injection assembly (4) further comprises a mounting plate (42) fixed on the top surface of the shell unit (31) in the middle of the upper die (3), an injection shell (43) is fixed on the mounting plate (42), a material injection opening (431) is formed in the top end of the injection shell (43), an injection nozzle (432) is formed in the bottom end of the injection shell, and the injection opening of the injection nozzle (432) is communicated with the top end of the injection runner (311).
  3. 3. The block forming die for the controlled liquid amount of the flying fish-like unmanned aerial vehicle according to claim 2, wherein a driving motor (44) is mounted at the top end of the injection shell (43), a spiral blade shaft (45) is connected to a power output shaft of the driving motor (44), and the material injection port (431) corresponds to the top end of the spiral blade shaft (45).
  4. 4. A fish-like unmanned aerial vehicle-controlled liquid-volume-segmented molding die as claimed in claim 3, wherein a pressurizer (46) is mounted at the bottom end of the injection housing (43), and the pressurizer (46) is used for pressurizing the material conveyed by the helical blade shaft (45) and then driving the material into the injection nozzle (432).
  5. 5. The block forming die for the unmanned aerial vehicle capable of simulating flying fish according to claim 4, wherein a guide rod (47) is fixed at the top end of the injection shell (43), and the guide rod (47) penetrates through the top plate (12) and is in sliding connection with the top plate (12).
  6. 6. The flying fish-like unmanned aerial vehicle-controlled liquid-volume-segmented molding die according to claim 1, wherein the sealing silica gel enables adjacent shell units (31) to have vertically staggered movable gaps.
  7. 7. The block forming die for the unmanned aerial vehicle capable of simulating flying fish according to claim 1, wherein a sliding block (7) is fixed on the side wall of the upper die (3), a sliding rail (14) corresponding to the sliding block (7) is fixed on the bottom plate (11), and the sliding block (7) is in sliding connection with the sliding rail (14).
  8. 8. The block forming die for the controllable liquid amount of the flying fish-like unmanned aerial vehicle according to claim 1 is characterized in that a vertical frame (15) and a guide frame (16) are fixed on one side of a bottom plate (11), a rotating shaft (152) is rotatably connected to the top end of the vertical frame (15) through a bearing seat (151), a chain wheel (153) is fixed on the rotating shaft (152), a counterweight body (17) is slidably connected to the guide frame (16), a balance chain (8) is connected between the counterweight body (17) and the upper die (3), and the balance chain (8) is wound on the chain wheel (153) and meshed with the chain wheel (153).
  9. 9. The flying fish-like unmanned aerial vehicle-controlled liquid-volume-divided forming die according to claim 8, wherein the counterweight body (17) comprises a box body (171) and a cover body (172), and a plurality of counterweight blocks (173) are arranged inside the box body (171).
  10. 10. The flying fish-like unmanned aerial vehicle-controlled liquid-volume-partitioned forming die of claim 9, wherein rollers (174) matched with the guide frame (16) are rotatably connected to two sides of the box body (171).

Description

Sectional forming die for controlling liquid quantity of flying fish-imitating unmanned aerial vehicle Technical Field The invention relates to the technical field of unmanned aerial vehicle part manufacturing, in particular to a block forming die for controlling liquid quantity of a flying fish-like aviation unmanned aerial vehicle. Background The carbon fiber liquid forming technology is used as an important composite material manufacturing process and has wide application in the fields of aerospace, wind power, automobiles, ships, rail transit, sports equipment, infrastructure and the like. The technology is characterized by high efficiency and low cost, becomes one of the key development directions of large-scale application of the composite materials in the future, and is particularly suitable for manufacturing high-precision components such as airplane parts, automobile parts and the like. However, this technology still faces significant technical bottlenecks in implementation. Because of the strong chemical adsorption between the resin matrix and the mold surface, and the thermal shrinkage stress in the material curing process and the local micro-tightening effect caused by the complex mold geometry, the mold opening resistance is obviously increased. If a forced die opening mode is adopted, huge interlaminar shearing force can easily cause fiber split-layer separation (namely layering phenomenon), and the structural integrity of the component is seriously damaged. At the same time, local stress concentrations may exceed the strength limits of the resin or fiber-resin interface, causing brittle fracture at the edges or weak areas of the component. Even more troublesome, the stresses created during the mold opening process can further exacerbate the existing defects in the manufacture. For example, dry spots can form in areas where the resin does not sufficiently wet the fiber bundles, which areas are highly prone to develop as a source of cracks under stress due to lack of adequate resin support, thereby severely impairing the tensile, flexural and fatigue properties of the article. The coupling effect of defects such as layering, cracking and dry spots not only reduces the product yield, but also makes the core advantages of the composite material such as light weight and high strength difficult to fully develop, and becomes a key technical bottleneck for restricting the manufacture of the composite material component with high precision and complex shape. Therefore, in order to solve the problems of difficulty and easiness in generating dry spots and the like in the mold opening process of the traditional liquid forming mold, the manufacturing precision and the product quality of the composite material component are improved, and development of a novel mold structure is needed. The invention aims to provide a blocking type forming die capable of controlling liquid quantity of an imitated flying fish unmanned aerial vehicle so as to solve the technical challenges and promote further development of an aviation carbon fiber liquid forming technology. Disclosure of Invention In view of the above, the invention provides a block forming die for controlling liquid amount of a flying fish-like unmanned aerial vehicle, which aims to solve the technical problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: a kind of imitative flying fish avionics controllable liquid volume block-type forming die, including: the die comprises a die frame, a die frame and a die frame, wherein the die frame consists of a bottom plate, a top plate and a plurality of struts connected between the bottom plate and the top plate, and a plurality of hydraulic cylinders are arranged on the top plate; The lower die is fixed on the bottom plate through a lower supporting rod; The upper die is positioned above the lower die, the upper die is formed by butt joint of a plurality of shell units in a turtle shell splitting mode, adjacent shell units are meshed through a sawtooth structure, so that the adjacent shell units form up-down displacement limitation, part of the shell units are connected with telescopic cylinders of a plurality of hydraulic cylinders in a one-to-one correspondence manner, the rest of the shell units are driven by the adjacent shell units to be linked, sealing silica gel is filled in the sawtooth structure between the adjacent shell units, the shell units in the middle are provided with glue injection runners, and a curved surface topological structure cavity of the simulated flying fish aviation unmanned aerial vehicle communicated with the glue injection runners is formed in the top surface of the lower die; the injection assembly is arranged on the top surface of the shell unit in the middle of the upper die, an injection port of the injection assembly is communicated with the top end of the glue injection runner, and a pressure sensor of the injection assemb