A combined forming die for the skin of a basic trainer aircraft

Abstract

The present invention relates to the technical field of aircraft skin manufacturing, and specifically relates to a combined forming die for the skin of a basic trainer aircraft, including a fixed housing, and further including fixed screws which rotate on the inner walls of both sides of the fixed housing through bearings. Two fixed blocks are rotationally connected to the circumferential outer wall of the fixed screws through threads; a support mechanism is arranged above the fixed blocks. The support mechanism includes a fixed plate hinged to one end of the top outer wall. Sliding grooves are formed on both sides of the top outer wall of the fixed blocks. In the present invention, by arranging a limiting block on the upper die, inserting it into the limiting groove on the top plate, and then using a locking bolt to fix the limiting block on the top plate, the rapid installation of the upper die is realized. By arranging a spraying mechanism, the release agent is added into the liquid storage housing through a liquid adding pipe, and by rotating the stirring rod on the rotating shaft through a handwheel, the release agent can be stirred, ensuring the subsequent demoulding effect of the lower die.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft skin manufacturing, and specifically, it is a combined forming die for the skin of a basic trainer aircraft. Background Technique

[0002] An aircraft skin refers to a conical member that surrounds the aircraft skeleton structure and is fixed to the skeleton with an adhesive or rivets to form the aerodynamic shape of the aircraft. During the long-term use of traditional dies, a large amount of debris will remain inside the die cavity, affecting the production of subsequent workpieces. The existing treatment method is to manually turn the die for maintenance and cleaning, which has extremely low work efficiency and is time-consuming and laborious.

[0003] A combined forming die for an aircraft composite skin disclosed in a Chinese invention with the publication number CN213593408U includes a base. At the four corners of the top of the base, guide rods are respectively fixedly connected. The top ends of the guide rods are fixedly connected with a top plate. A hydraulic cylinder is fixedly connected to the top side of the top plate. The movable end of the hydraulic cylinder penetrates the bottom side of the top plate and is fixedly connected with a lifting plate. The lower side of the lifting plate is connected with an upper die. The top side of the base is connected with a lower die. A first motor is fixedly connected to the left side of the lifting plate. A first groove is dug in the middle of the bottom side of the lifting plate. It does not require manual turning of the die for cleaning, greatly improving the practicability and work efficiency. It can effectively buffer the impact force of the die during the die closing process, avoid the situation of die breakage, and improve the connection stability between the upper die and the lower die.

[0004] However, the above patent has the following deficiencies. Although it does not require manual turning of the die, the entire die is mainly difficult to clean, especially the lower die, which takes a long time to clean. During the cleaning of the lower die, the entire combined die cannot work, and there are limitations in use. Therefore, there is an urgent need for a new combined forming die for the skin of a basic trainer aircraft to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a combined forming die for the skin of a basic trainer aircraft to solve the problems raised in the above background technique.

[0006] The technical solution of the present invention is: A combined forming die for the skin of a basic trainer aircraft includes a fixed housing, and also includes;

[0007] Fixed screws, which are rotatably connected to the inner walls on both sides of the fixed housing through bearings. Two fixed blocks are rotationally connected to the circumferential outer wall of the fixed screws through threads;

[0008] A support mechanism is arranged above the fixed block. The support mechanism includes a fixing plate hinged at one end of the top outer wall. Sliding grooves are formed on both sides of the top outer wall of the fixed block, and a pressing groove is formed on the outer wall of one side of the sliding groove. Rectangular blocks are installed on both sides of the bottom outer wall of the fixing plate, and the rectangular blocks are matched with the sliding grooves. Connecting plates are installed on both sides of the top outer wall of the fixed block, and an adjusting screw is rotationally connected to the outer wall of one side of the connecting plate through a thread. One side of the adjusting screw is rotationally connected to an extrusion plate through a bearing, and the bottom outer wall of the extrusion plate is slidably connected to the top outer wall of the fixing plate. A lower mold is placed on the top outer wall of the fixing plate, and the lower mold is located between the two extrusion plates;

[0009] A spraying mechanism is used for spraying a release agent on the inner wall of the lower mold. The spraying mechanism includes a liquid storage shell installed on one side of the outer wall of the fixed shell, and a liquid pumping pump is installed on one side of the outer wall of the liquid storage shell.

[0010] Preferably, the same mounting frame is installed on the inner walls of both sides of the fixed shell, and a hydraulic cylinder is inserted into the top outer wall of the mounting frame. The bottom outer wall of the hydraulic cylinder is provided with a top plate, and limiting grooves are formed on both sides of the bottom outer wall of the top plate. Limiting blocks are slidably connected to the inner walls of the limiting grooves. The same upper mold is installed on the bottom outer walls of the two limiting blocks. Locking bolts are rotationally connected to the outer walls of both sides of the top plate through threads.

[0011] Preferably, a motor is installed on one side of the outer wall of the fixed shell, and the output shaft of the motor is fixedly connected to the outer wall of one side of the fixed screw. The same limiting round rod is slidably inserted into the outer walls of the two fixed blocks, and both sides of the limiting round rod are fixedly connected to the inner walls of both sides of the fixed shell.

[0012] Preferably, an opening is formed at the bottom of the outer wall of one side of the rectangular block, and the same pressing block is slidably connected to the inner walls of the opening and the pressing groove. A fixing spring is installed on the outer wall of one side of the pressing block, and the other end of the fixing spring is fixedly connected to the inner wall of the opening.

[0013] Preferably, equidistantly distributed connecting grooves are formed on the outer wall of one side of the extrusion plate close to the lower mold, and circular convex blocks are slidably connected to the inner walls of the connecting grooves. A supporting spring is installed on the outer wall of one side of the circular convex block, and the other end of the supporting spring is fixedly connected to the inner wall of the connecting groove. Support seats are installed at the four corners of the bottom outer wall of the fixed shell.

[0014] Preferably, a liquid inlet pipe is installed at the input end of the liquid pumping pump, and the other end of the liquid inlet pipe extends into the liquid storage shell. A liquid outlet pipe is installed at the output end of the liquid pumping pump, and a spray head is installed at the output end of the liquid outlet pipe. A support frame is installed on the top outer wall of the mounting frame, and the spray head is clamped in the inner wall of the support frame.

[0015] Preferably, a rotating shaft is rotatably connected to the outer wall of the top of the liquid storage housing through a bearing, and stirring rods are installed on the outer wall of the circumference of the rotating shaft at equal intervals. A handwheel is installed on the outer wall of the top of the rotating shaft, and a liquid adding pipe is inserted into one side of the outer wall of the top of the liquid storage housing.

[0016] Preferably, a rectangular plate is installed on the inner wall of one end of the fixed housing, and hydraulic rods are inserted into both sides of the outer wall of the top of the rectangular plate.

[0017] Preferably, a connecting groove is formed on one side of the outer wall of the bottom of the fixed block, and a support hole is formed on the outer wall of the top of the connecting groove. The support hole is matched with the hydraulic rod.

[0018] Preferably, collecting hoppers are installed on both sides of the outer wall of one end of the fixed housing.

[0019] The present invention provides a combined forming mold for the skin of a basic training aircraft through improvement. Compared with the prior art, it has the following improvements and advantages:

[0020] First: By setting a fixed plate and rotating the adjusting screw on the connecting plate, the two pressing plates can be moved closer to each other, so as to quickly fix the lower mold. Support springs and circular bumps are arranged on the pressing plates, which can increase the contact points with the lower mold, thereby increasing the friction force and improving the firmness of the fixation.

[0021] Second: By setting a limiting block on the upper mold, inserting it into the limiting groove on the top plate, and then using a locking bolt to fix the limiting block on the top plate, the quick installation of the upper mold is realized. By setting a spraying mechanism, the release agent is added into the liquid storage housing through the liquid adding pipe, and the stirring rod on the rotating shaft is rotated by the handwheel to stir the release agent, ensuring the demoulding effect on the lower mold next.

[0022] Third: By setting a motor, starting the motor to drive the fixed block on the fixed screw to move, moving the formed lower mold out of the upper mold, starting the hydraulic rod on the rectangular plate, and then pressing the pressing block on the fixed spring to jack up the rectangular block and the fixed plate, so as to jack up the connecting plate, the pressing plate and the lower mold installed on the fixed plate, which is convenient for the staff to clean the lower mold. At the same time, another lower mold moves to the lower part of the upper mold, which can realize cleaning the lower mold while extruding and forming, improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a further explanation of the present invention with reference to the drawings and embodiments:

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is a top view structural schematic diagram of the present invention;

[0026] Figure 3 is a schematic cross-sectional structure diagram of the liquid storage housing of the present invention;

[0027] Figure 4 is a schematic structure diagram of the support mechanism of the present invention;

[0028] Figure 5 is a schematic cross-sectional structure diagram of the extrusion plate of the present invention;

[0029] Figure 6 is a schematic cross-sectional structure diagram of the fixing block of the present invention.

[0030] Description of reference numerals:

[0031] 1. Motor; 2. Fixed housing; 3. Collection hopper; 4. Support mechanism; 401. Fixed plate; 402. Lower mold; 403. Extrusion plate; 404. Adjusting screw; 405. Connecting plate; 406. Support spring; 407. Circular convex block; 5. Mounting frame; 6. Hydraulic cylinder; 7. Support seat; 8. Fixed screw; 9. Spraying mechanism; 901. Liquid storage housing; 902. Handwheel; 903. Liquid pumping pump; 904. Liquid outlet pipe; 905. Support frame; 906. Rotating shaft; 907. Stirring rod; 10. Top plate; 11. Limiting block; 12. Rectangular plate; 13. Hydraulic rod; 14. Liquid adding pipe; 15. Limiting round rod; 16. Upper mold; 17. Fixing block; 18. Connecting groove; 19. Pressing block; 20. Rectangular block; 21. Support hole; 22. Fixed spring. Detailed implementation manners

[0032] The present invention will be described in detail below. The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] The present invention provides a combined forming die for the skin of a basic training aircraft through improvement. The technical solution of the present invention is as follows:

[0034] As Figures 1-6 shown, a combined forming die for the skin of a basic training aircraft includes a fixed housing 2, and further includes;

[0035] A fixed screw 8 is rotatably arranged on the inner walls of both sides of the fixed housing 2 through bearings, and two fixing blocks 17 are rotatably connected to the outer circumference of the fixed screw 8 through threads;

[0036] The supporting mechanism 4 is arranged above the fixed block 17. The supporting mechanism 4 includes a fixing plate 401 hinged at one end of the outer wall of the top. Sliding grooves are formed on both sides of the outer wall of the top of the fixed block 17, and a pressing groove is formed on the outer wall of one side of the sliding groove. Rectangular blocks 20 are installed on both sides of the outer wall of the bottom of the fixing plate 401, and the rectangular blocks 20 are matched with the sliding grooves. Connecting plates 405 are installed on both sides of the outer wall of the top of the fixed block 17, and an adjusting screw rod 404 is rotationally connected through a thread on the outer wall of one side of the connecting plate 405. One side outer wall of the adjusting screw rod 404 is rotationally connected with a pressing plate 403 through a bearing, and the bottom outer wall of the pressing plate 403 is slidably connected with the top outer wall of the fixing plate 401. A lower mold 402 is placed on the top outer wall of the fixing plate 401, and the lower mold 402 is located between the two pressing plates 403. Placing the lower mold 402 on the fixing plate 401 and rotating the adjusting screw rod 404 on the connecting plate 405 can make the two pressing plates 403 approach each other, so as to quickly fix the lower mold 402;

[0037] The spraying mechanism 9 is used for spraying the release agent on the inner wall of the lower mold 402. The spraying mechanism 9 includes a liquid storage shell 901 installed on the outer wall of one side of the fixed shell 2, and a liquid pumping pump 903 is installed on the outer wall of one side of the liquid storage shell 901.

[0038] Furthermore, the same mounting bracket 5 is installed on the inner walls of both sides of the fixed shell 2, and a hydraulic cylinder 6 is inserted into the outer wall of the top of the mounting bracket 5. The bottom outer wall of the hydraulic cylinder 6 is installed with a top plate 10, and limiting grooves are formed on both sides of the bottom outer wall of the top plate 10. Limiting blocks 11 are slidably connected to the inner walls of the limiting grooves. The same upper mold 16 is installed on the bottom outer walls of the two limiting blocks 11. Locking bolts are rotationally connected through threads on both outer walls of the top plate 10.

[0039] Furthermore, a motor 1 is installed on the outer wall of one side of the fixed shell 2, and the output shaft of the motor 1 is fixedly connected to the outer wall of one side of the fixed screw rod 8. The same limiting round rod 15 is slidably inserted into the outer walls of the two fixed blocks 17, and both sides of the limiting round rod 15 are fixedly connected to the inner walls of both sides of the fixed shell 2.

[0040] Furthermore, an opening is formed at the bottom of the outer wall of one side of the rectangular block 20, and the same pressing block 19 is slidably connected to the inner walls of the opening and the pressing groove. A fixing spring 22 is installed on the outer wall of one side of the pressing block 19, and the other end of the fixing spring 22 is fixedly connected to the inner wall of the opening. A pressing block 19 and a fixing spring 22 are arranged between the fixed block 17 and the rectangular block 20, which can fix the fixing plate 401 on the fixed block 17.

[0041] Further, a connecting groove is provided on the outer wall of one side of the extrusion plate 403 close to the lower die 402, and a circular convex block 407 is slidably connected to the inner wall of the connecting groove. A support spring 406 is installed on the outer wall of one side of the circular convex block 407, and the other end of the support spring 406 is fixedly connected to the inner wall of the connecting groove. Support seats 7 are installed at the four corners of the outer wall of the bottom of the fixed housing 2. The support spring 406 and the circular convex block 407 are provided on the extrusion plate 403, which can increase the contact points with the lower die 402, thereby increasing the friction force and improving the fixing firmness.

[0042] Further, a liquid inlet pipe is installed at the input end of the liquid extraction pump 903, and the other end of the liquid inlet pipe extends into the interior of the liquid storage housing 901. A liquid outlet pipe 904 is installed at the output end of the liquid extraction pump 903, and a spray head is installed at the output end of the liquid outlet pipe 904. A support frame 905 is installed on the outer wall of the top of the mounting frame 5, and the spray head is clamped inside the inner wall of the support frame 905.

[0043] Further, a rotating shaft 906 is rotatably connected to the outer wall of the top of the liquid storage housing 901 through a bearing, and evenly distributed stirring rods 907 are installed on the circumferential outer wall of the rotating shaft 906. A hand wheel 902 is installed on the outer wall of the top of the rotating shaft 906. A liquid adding pipe 14 is inserted into one side of the outer wall of the top of the liquid storage housing 901. The release agent is added into the liquid storage housing 901 through the liquid adding pipe 14. By rotating the stirring rods 907 on the rotating shaft 906 through the hand wheel 902, the release agent can be stirred, ensuring the subsequent demoulding effect on the lower die 402.

[0044] Further, a rectangular plate 12 is installed on the inner wall of one end of the fixed housing 2, and hydraulic rods 13 are inserted into both sides of the outer wall of the top of the rectangular plate 12.

[0045] Further, a connecting groove 18 is provided on the outer wall of one side of the bottom of the fixed block 17, and a support hole 21 is provided on the outer wall of the top of the connecting groove 18. The support hole 21 is matched with the hydraulic rod 13. The hydraulic rod 13 on the rectangular plate 12 is opened, and then the pressing block 19 on the fixed spring 22 is pressed, so that the rectangular block 20 and the fixing plate 401 are lifted, thereby lifting the connecting plate 405, the extrusion plate 403 and the lower die 402 installed on the fixing plate 401, facilitating the staff to clean the lower die 402.

[0046] Further, collection hoppers 3 are installed on both sides of the outer wall of one end of the fixed housing 2, and the debris cleaned enters the collection hoppers 3 and is collected.

[0047] Working principle: Place the lower die 402 on the fixed plate 401. Rotate the adjusting screw 404 on the connecting plate 405, and the two extrusion plates 403 can be moved closer to each other, so as to quickly fix the lower die 402. The extrusion plates 403 are provided with support springs 406 and circular bumps 407, which can increase the contact points with the lower die 402, thereby increasing the friction force and improving the fixing firmness. By means of the limit block 11 provided on the upper die 16, insert it into the limit groove on the top plate 10, and then use the locking bolt to fix the limit block 11 on the top plate 10, realizing the quick installation of the upper die 16. By providing a spraying mechanism 9, the release agent is added to the liquid storage housing 901 through the liquid adding pipe 14. Rotate the stirring rod 907 on the rotating shaft 906 through the handwheel 902, and the release agent can be stirred to ensure the subsequent demoulding effect of the lower die 402. Start the hydraulic cylinder 6 to drive the top plate 10 and the upper die 402 to descend to extrude and form the parts. After the extrusion forming is completed, start the motor 1 to drive the fixed block 17 on the fixed screw 8 to move, and move the formed lower die 402 out of the upper die 16. Start the hydraulic rod 13 on the rectangular plate 12, and then press the pressing block 19 on the fixed spring 22 to lift the rectangular block 20 and the fixed plate 401, so as to lift the connecting plate 405, the extrusion plate 403 and the lower die 402 installed on the fixed plate 401, which is convenient for the staff to clean the lower die 402. The cleaning debris enters the collection hopper 3 and is collected. At the same time, another lower die 402 moves to the lower part of the upper die 16, which can realize cleaning the lower die 16 while extruding and forming, improving the work efficiency.

Claims

1. A combined forming die for the skin of a basic training aircraft, comprising a fixed housing (2), characterized in that, it further includes; A fixed screw (8) is rotatably connected to the inner walls on both sides of the fixed housing (2) through bearings, and two fixed blocks (17) are rotatably connected to the outer circumference of the fixed screw (8) through threads; A support mechanism (4) is arranged above the fixed block (17). The support mechanism (4) includes a fixed plate (401) hinged to one end of the outer wall of the top of the fixed block (17). Sliding grooves are formed on both sides of the outer wall of the top of the fixed block (17), and a pressing groove is formed on the outer wall of one side of the sliding groove. Rectangular blocks (20) are installed on both sides of the outer wall of the bottom of the fixed plate (401), and the rectangular blocks (20) are matched with the sliding grooves. Connecting plates (405) are installed on both sides of the outer wall of the top of the fixed plate (401), and an adjusting screw (404) is rotatably connected to the outer wall of one side of the connecting plate (405) through threads. An extrusion plate (403) is rotatably connected to the outer wall of one side of the adjusting screw (404) through a bearing, and the outer wall of the bottom of the extrusion plate (403) is slidably connected to the outer wall of the top of the fixed plate (401). A lower die (402) is placed on the outer wall of the top of the fixed plate (401), and the lower die (402) is located between the two extrusion plates (403); A spraying mechanism (9) for spraying a release agent on the inner wall of the lower die (402). The spraying mechanism (9) includes a liquid storage housing (901) installed on the outer wall of one side of the fixed housing (2), and a liquid extraction pump (903) is installed on the outer wall of one side of the liquid storage housing (901); An opening is formed at the bottom of the outer wall of one side of the rectangular block (20), and a pressing block (19) is slidably connected to the inner walls of the opening and the pressing groove. A fixing spring (22) is installed on the outer wall of one side of the pressing block (19), and the other end of the fixing spring (22) is fixedly connected to the inner wall of the opening; Equidistantly distributed connecting grooves are formed on the outer wall of one side of the extrusion plate (403) close to the lower die (402), and circular bumps (407) are slidably connected to the inner walls of the connecting grooves. A support spring (406) is installed on the outer wall of one side of the circular bump (407), and the other end of the support spring (406) is fixedly connected to the inner wall of the connecting groove. Support seats (7) are installed at the four corners of the outer wall of the bottom of the fixed housing (2); A rectangular plate (12) is installed on the inner wall of one end of the fixed housing (2), and hydraulic rods (13) are inserted into both sides of the outer wall of the top of the rectangular plate (12); A connecting groove (18) is formed at the bottom of the outer wall of one side of the fixed block (17), and a support hole (21) is formed at the top of the outer wall of the connecting groove (18). The support hole (21) is matched with the hydraulic rod (13).

2. The combined forming die for the skin of a basic training aircraft according to claim 1, characterized in that: On both inner walls of the fixed housing (2), the same mounting frame (5) is installed, and a hydraulic cylinder (6) is inserted into the outer wall of the top of the mounting frame (5). The outer wall of the bottom of the hydraulic cylinder (6) is equipped with a top plate (10), and limiting grooves are formed on both sides of the outer wall of the bottom of the top plate (10). Limiting blocks (11) are slidably connected to the inner walls of the limiting grooves. The same upper mold (16) is installed on the outer walls of the bottoms of the two limiting blocks (11). Locking bolts are rotatably connected to the outer walls of both sides of the top plate (10) through threads.

3. The combined forming die for the skin of a basic trainer aircraft according to claim 1, characterized in that: A motor (1) is installed on the outer wall of one side of the fixed housing (2), and the output shaft of the motor (1) is fixedly connected to the outer wall of one side of the fixed screw rod (8). The same limiting round rod (15) is slidably inserted into the outer walls of one sides of the two fixing blocks (17). The two sides of the limiting round rod (15) are fixedly connected to the inner walls of both sides of the fixed housing (2).

4. The combined forming die for the skin of a basic trainer aircraft according to claim 2, characterized in that: The input end of the liquid extraction pump (903) is installed with a liquid inlet pipe, and the other end of the liquid inlet pipe extends into the internal of the liquid storage housing (901). The output end of the liquid extraction pump (903) is installed with a liquid outlet pipe (904), and the output end of the liquid outlet pipe (904) is installed with a nozzle. A support frame (905) is installed on the outer wall of the top of the mounting frame (5), and the nozzle is clamped in the inner wall of the support frame (905).

5. The combined forming die for the skin of a basic trainer aircraft according to claim 4, characterized in that: The top outer wall of the liquid storage housing (901) is rotatably connected by a bearing with a rotating shaft (906), and evenly distributed stirring rods (907) are installed on the circumferential outer wall of the rotating shaft (906). A hand wheel (902) is installed on the outer wall of the top of the rotating shaft (906). A liquid adding pipe (14) is inserted into one side of the top outer wall of the liquid storage housing (901).

6. The combined forming die for the skin of a basic trainer aircraft according to claim 1, characterized in that: Collection hoppers (3) are installed on both sides of the outer wall of one end of the fixed housing (2).

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