A multiple vacuuming device and method for thick-walled UAV tail cabin ply

Abstract

The present invention discloses a multiple vacuum pumping device and method for thick-walled unmanned aerial vehicle tail cabin ply, comprising a shell, a vacuum pump fixedly mounted on the inner wall of one end of the shell, an oil storage box arranged above the vacuum pump, a vacuum pump assembly arranged on the shell, an adjustment assembly arranged on the vacuum pump assembly, and an oil injection assembly arranged on the vacuum pump assembly. The present invention realizes the multifunctional operation of vacuum pumping, oil spraying lubrication and anti-blocking by controlling the rotation direction of the rotating circular rod. When rotating clockwise, gas is extracted through the vacuum pump assembly to meet different volume requirements. When rotating counterclockwise, the oil injection assembly sprays oil on the inner wall to lubricate, reduce friction and save resources. At the same time, the anti-blocking assembly automatically knocks the filter screen to prevent blockage, and the force is adjustable, which improves the flexibility and efficiency of the operation, adapts to the diverse use requirements, facilitates multiple vacuum pumping steps, improves dimensional accuracy, facilitates mold closing operations, and improves production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material processing, and in particular to a device and method for multiple vacuuming of thick-walled unmanned aerial vehicle tail cabin ply. Background Art

[0002] Composite materials are widely used in aerospace, automobile manufacturing, military industry and other fields due to their high strength, low density, corrosion resistance and designability. For high-end applications such as thick-walled parts and seals, it is crucial to ensure the uniformity and density of the material to meet high performance requirements. For example, optoelectronic pods for drones, offshore platform shelters for ships, and packaging boxes for ammunition storage all require extremely high sealing performance to cope with complex and harsh environmental tests and special working conditions.

[0003] At present, mature sealing processes such as sealing rubber rings and sealing rubber sheets are usually used at the interfaces of components to ensure the sealing of products. Since the traditional single vacuuming process is difficult to meet the sealing requirements of these high-end applications, it is particularly important to develop multiple vacuuming processes to solve the problems of bubbles and pores and ensure the uniformity and density of materials. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a multiple vacuum extraction device and method for thick-walled UAV tail cabin ply.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A multiple vacuum extraction device for thick-walled UAV tail cabin ply comprises a shell, a vacuum cylinder is fixedly mounted on the inner wall of one end of the shell, an oil storage box is arranged above the vacuum cylinder, a vacuum extraction component is arranged on the shell, an adjustment component is arranged on the vacuum extraction component, an oil injection component is arranged on the vacuum extraction component, and an anti-blocking component is arranged on the vacuum extraction component.

[0007] Preferably, the vacuum assembly includes a servo motor fixedly mounted on an inner wall of a shell, the output shaft of the servo motor is fixedly connected to a rotating shaft, and a mounting block is fixedly mounted on the outer wall of the rotating shaft, a rotating circular rod is provided on the mounting block close to the vacuum cylinder on a side, an oil filling pipe slidably connected to the outer wall of one end of the vacuum cylinder is penetrated through the outer wall of one end of the vacuum cylinder, an exhaust pipe is fixedly mounted on the end of the oil filling pipe located in the vacuum cylinder, the exhaust plug is slidably connected to the inner wall of the vacuum cylinder, a second spring is fixedly connected between the exhaust plug and the inner wall of one end of the vacuum cylinder, a linear motion circular rod is provided on the side of the oil filling pipe away from the exhaust plug, and the vacuum cylinder is provided with an exhaust pipe and an exhaust pipe connected to the interior thereof, and the ends of the exhaust pipe and the exhaust pipe connected to the vacuum cylinder are both located on the side of the vacuum plug away from the oil filling pipe.

[0008] Preferably, the adjustment assembly includes two fixed blocks fixedly mounted on a side wall of the mounting block close to the vacuum cylinder, an adjustment threaded rod is rotatably connected between the two fixed blocks, an adjustment block is threadedly mounted on the outer wall of the adjustment threaded rod, the adjustment block is fixedly connected to the rotating round rod, an adjustment motor is fixedly mounted on the outer wall of one of the fixed blocks, one end of the adjustment threaded rod passes through one of the fixed blocks and is fixedly connected to the output shaft of the adjustment motor.

[0009] The cam is connected with the oil filling tube at the side of the oil filling tube and the oil filling tube is connected with the oil filling tube at the side of the oil filling tube away from the movable rod. The movable rod is located in the oil filling tube and is slidably connected with the movable rod. The end of the movable rod is located in the oil filling tube and is fixedly installed with an oil filling plug. The oil filling plug is slidably connected with the inner wall of the oil filling tube. The movable rod is located in the oil filling tube and is fixedly installed with a limiting block at the end of the movable rod outside the oil filling tube. The linear motion round rod is fixedly connected to the top of the limiting block. The oil filling tube is provided with an oil inlet pipe connected with the interior thereof, the oil inlet pipe away from the oil filling tube is connected with the oil storage box, the end of the oil inlet pipe connected with the oil filling tube is located on the side of the oil filling plug away from the movable rod, the limit block is fixedly connected with the oil filling tube,

[0010] Preferably, the anti-blocking component includes a connecting piece fixedly mounted on the bottom of the limit block, a first magnetic block is fixedly mounted on one end of the connecting piece close to the exhaust pipe, a filter is arranged in the exhaust pipe, an auxiliary block located between the filter and the first magnetic block is fixedly mounted in the exhaust pipe, an auxiliary rod is penetrated by the auxiliary block and is slidably connected to the auxiliary block, a knocking block is fixedly mounted on one end of the auxiliary rod close to the filter, a third spring is fixedly connected between the knocking block and the auxiliary block, and a second magnetic block is fixedly mounted on one end of the auxiliary rod close to the first magnetic block.

[0011] Preferably, one-way valves are provided in the air extraction pipe, the exhaust pipe, the oil filling pipe, the oil inlet pipe and the oil outlet hole, and the filter is an elastic mesh.

[0012] Preferably, scale lines are arranged on the outer side wall of the mounting block, a pointer is arranged on the adjustment block, the adjustment block is adjacent to the mounting block, and the first magnetic block and the second magnetic block have different magnetic properties.

[0013] The vacuuming method of the multiple vacuuming device for thick-walled UAV tail cabin ply comprises the following steps:

[0014] The first step is to connect the vacuum area to the exhaust pipe after the adhesive film, interlayer foam and copper mesh embedded parts are laid and the sealing test is done;

[0015] The second step is to adjust the components so that the rotating rod is in the appropriate position, start the servo motor to rotate the rotating rod clockwise, extract the gas to be vacuumed through the vacuum assembly, start the servo motor to rotate the rotating rod counterclockwise as needed, spray oil and lubricate the inner wall of the vacuum plug and the vacuum cylinder through the oil injection assembly, and use the anti-blocking assembly to knock the knocking block on the filter of the elastic mesh surface. This is repeated many times with the assistance of a pressure gauge until the mold closing standard is reached.

[0016] Beneficial effects of the present invention:

[0017] By setting up the vacuum pumping component and the adjustment component, the gas in the area to be vacuumed can be extracted into the vacuum cylinder and finally discharged during the clockwise rotation of the rotating circular rod. The volume of the gas extracted at a single time can also be adjusted, meeting the end-use requirements in different situations.

[0018] By setting up the oil injection assembly and the adjustment assembly, the inner wall of the vacuum plug and the vacuum cylinder can be sprayed with oil for lubrication during the counterclockwise rotation of the rotating circular rod, thereby reducing the friction force exerted on the vacuum plug during the vacuuming process, and the amount of a single oil spray can also be adjusted, saving resources.

[0019] By arranging the anti-blocking component and the adjusting component, the filter can be automatically knocked when the rotating circular rod rotates counterclockwise, thereby preventing the filter from being blocked, and the knocking force of the filter can also be adjusted, which is easy to use.

[0020] The present invention realizes the multifunctional operations of vacuuming, oil spraying lubrication and anti-clogging by controlling the rotation direction of the rotating circular rod. When rotating clockwise, gas is extracted through the vacuuming component to meet different volume requirements. When rotating counterclockwise, the oil injection component sprays oil on the inner wall for lubrication, which reduces friction and saves resources. At the same time, the anti-clogging component automatically knocks the filter screen to prevent clogging with adjustable force, thereby improving the flexibility and efficiency of operation, adapting to diverse usage requirements, facilitating multiple vacuuming steps, improving dimensional accuracy, facilitating mold closing operations, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of one side of a multiple vacuum extraction device for thick-walled UAV tail cabin ply proposed by the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the other side of a multiple vacuum extraction device for thick-walled UAV tail cabin ply proposed by the present invention;

[0024] Figure 4 It is a schematic diagram of the cutaway rear three-dimensional structure of the present invention;

[0025] Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0027] Figure 7 A plan view schematically showing the working state of a multiple vacuum extraction device for thick-walled UAV tail cabin ply proposed by the present invention.

[0028] Figure 8 This is a three-dimensional schematic diagram before the tail cabin is vacuumed.

[0029] Fig. 9 This is a three-dimensional schematic diagram of the tail cabin after vacuuming.

[0030] In the figure: 1 housing, 2 servo motor, 3 rotating shaft, 4 adjusting motor, 5 linear motion round rod, 6 limiting block, 7 connecting piece, 8 first magnetic block, 9 exhaust pipe, 10 movable rod, 11 first spring, 12 oil filling cylinder, 13 oil inlet pipe, 14 exhaust cylinder, 15 oil storage box, 16 exhaust pipe, 17 mounting block, 18 scale line, 19 pointer, 20 fixed block, 21 adjusting block, 22 adjusting threaded rod, 23 rotating motion round rod, 24 oil filling plug, 25 exhaust plug, 26 second spring, 27 oil filling pipe, 28 oil outlet hole, 29 filter, 30 knocking block, 31 third spring, 32 auxiliary rod, 33 auxiliary block, 34 second magnetic block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 9A multiple vacuum pumping device for thick-walled unmanned aerial vehicle tail cabin ply, comprising a shell 1, a vacuum pump 14 is fixedly mounted on the inner wall of one end of the shell 1, an oil storage box 15 is arranged above the vacuum pump 14, a vacuum pumping assembly is arranged on the shell 1, and the vacuum pumping assembly comprises a servo motor 2 fixedly mounted on an inner wall of the shell 1, an output shaft of the servo motor 2 is fixedly connected to a rotating shaft 3, a mounting block 17 is fixedly mounted on the outer wall of the rotating shaft 3, a rotating round rod 23 is arranged on the side of the mounting block 17 close to the vacuum pump 14, and a rotating round rod 23 is arranged on the outer wall of one end of the vacuum pump 14. The oil filling pipe 27 is slidably connected, and a suction plug 25 is fixedly installed at one end of the oil filling pipe 27 located in the suction cylinder 14. The suction plug 25 is slidably connected to the inner wall of the suction cylinder 14. A second spring 26 is fixedly connected between the suction plug 25 and the inner wall of one end of the suction cylinder 14. A linear motion round rod 5 is arranged on the side of the oil filling pipe 27 away from the suction plug 25. The suction cylinder 14 is provided with a suction pipe 9 and an exhaust pipe 16 connected to the interior thereof. The ends of the suction pipe 9 and the exhaust pipe 16 connected to the suction cylinder 14 are both located on the side of the suction plug 25 away from the oil filling pipe 27.

[0033] The vacuum assembly is provided with an adjustment assembly, which includes two fixed blocks 20 fixedly mounted on a side wall of the mounting block 17 close to the vacuum cylinder 14, an adjustment threaded rod 22 is rotatably connected between the two fixed blocks 20, an adjustment block 21 is threadedly sleeved on the outer wall of the adjustment threaded rod 22, the adjustment block 21 is fixedly connected to the rotating round rod 23, an adjustment motor 4 is fixedly mounted on the outer wall of one of the fixed blocks 20, one end of the adjustment threaded rod 22 passes through one of the fixed blocks 20 and is fixedly connected to the output shaft of the adjustment motor 4;

[0034] The vacuum assembly is provided with an oil injection assembly, which includes an oil injection cylinder 12 fixedly mounted on the outer wall of the oil injection pipe 27. The oil injection cylinder 12 is located outside the vacuum cylinder 14 and is connected to the oil injection pipe 27. The outer wall of the end of the oil injection cylinder 12 away from the vacuum cylinder 14 is penetrated by a movable rod 10 slidably connected thereto. An end of the movable rod 10 located in the oil injection cylinder 12 is fixedly mounted with an oil injection plug 24. The oil injection plug 24 is slidably connected to the inner wall of the oil injection cylinder 12. The movable rod 10 is located outside the oil injection cylinder 12. A limit block 6 is fixedly installed at one end, and a linear motion round rod 5 is fixedly connected to the top of the limit block 6. An oil inlet pipe 13 connected to the inside of the oil filling cylinder 12 is provided. The end of the oil inlet pipe 13 away from the oil filling cylinder 12 is connected to the oil storage box 15. The end of the oil inlet pipe 13 connected to the oil filling cylinder 12 is located on the side of the oil filling plug 24 away from the movable rod 10. A first spring 11 is fixedly connected between the limit block 6 and the oil filling cylinder 12. An oil outlet hole 28 located in the vacuum cylinder 14 is provided on the oil filling pipe 27;

[0035] The vacuum assembly is provided with an anti-blocking assembly, which includes a connecting piece 7 fixedly mounted on the bottom of the limit block 6, a first magnetic block 8 is fixedly mounted on one end of the connecting piece 7 close to the exhaust pipe 9, a filter screen 29 is arranged in the exhaust pipe 9, an auxiliary block 33 located between the filter screen 29 and the first magnetic block 8 is fixedly mounted in the exhaust pipe 9, an auxiliary rod 32 slidably connected to the auxiliary block 33 is penetrated, a knocking block 30 is fixedly mounted on one end of the auxiliary rod 32 close to the filter screen 29, and the knocking block 33 is fixedly mounted on the auxiliary block 33. A third spring 31 is fixedly connected between the auxiliary block 33 and the auxiliary block 33, a second magnetic block 34 is fixedly installed on one end of the auxiliary rod 32 close to the first magnetic block 8, a one-way valve is arranged in the exhaust pipe 9, the exhaust pipe 16, the oil filling pipe 27, the oil inlet pipe 13 and the oil outlet hole 28, the filter screen 29 is an elastic mesh surface, a scale line 18 is arranged on the outer wall of the mounting block 17, a pointer 19 is arranged on the adjusting block 21, the adjusting block 21 is close to the mounting block 17, and the first magnetic block 8 and the second magnetic block 34 have different magnetic properties.

[0036] The vacuuming method of the multiple vacuuming device for thick-walled UAV tail cabin ply comprises the following steps:

[0037] The first step is to connect the vacuum area to be evacuated with the exhaust pipe 9 after the adhesive film, interlayer foam and copper mesh embedded parts are laid and the sealing test is done;

[0038] In the second step, the rotating rod 23 is located at a suitable position by adjusting the assembly, the servo motor 2 is started to rotate the rotating rod 23 clockwise, the gas to be vacuumed is extracted through the vacuum assembly, the servo motor 2 is started to rotate the rotating rod 23 counterclockwise as needed, and oil is sprayed on the inner wall of the vacuum plug 25 and the vacuum cylinder 14 through the oil injection assembly for lubrication, and the knocking block 30 is used to knock the filter 29 on the elastic mesh surface through the anti-blocking assembly, and this is repeated many times with the assistance of a pressure gauge until the mold closing standard is reached.

[0039] The following table shows the data (empirical data) that need to be guaranteed in each step of the vacuum operation.

[0040] Number of layers Vacuum degree Vacuum time min 1 80％ 10 3 80％ 20 7 70％ 20 11 60％ 30 … 50％ 30-50

[0041] When the present invention is used, after the adhesive film, sandwich foam and copper mesh embedded parts are laid and sealed, the vacuum area to be evacuated is connected to the exhaust pipe 9, and the adjustment motor 4 is started to rotate the adjustment threaded rod 22. Since the adjustment block 21 and the mounting block 17 are close to each other and will not rotate, the adjustment block 21 and the rotating circular rod 23 can be moved left and right. By setting the pointer 19 and the scale line 18, it is convenient to adjust the vertical distance between the rotating circular rod 23 and the axis of the rotating shaft 3. Then, the servo motor 2 is started to rotate the rotating shaft 3, the mounting block 17 and the rotating circular rod 23 (attached) Figure 1During the clockwise rotation of the rotary motion rod 23, the rotary motion rod 23 will contact the linear motion rod 5. Since the oil filling plug 24 initially abuts against the inner wall of one end of the oil filling cylinder 12, it is impossible to move away from the left side in the oil filling cylinder 12 (see FIG. Figure 1 Thus, during the rotation of the rotary rod 23, the linear rod 5 causes the oil filling cylinder 12, the oil filling plug 24, the oil filling pipe 27 and the air extraction plug 25 to move synchronously to the left (see FIG. Figure 1 When the oil filling cylinder 12, the oil filling plug 24, the oil filling pipe 27 and the air extraction plug 25 move synchronously to the left, the second spring 26 is compressed, and a suction effect is generated in the air extraction cylinder 14, so that the gas in the vacuum area to be evacuated is filtered by the filter screen 29 in the air extraction pipe 9 and enters the air extraction cylinder 14. When the rotary motion round rod 23 and the linear motion round rod 5 are separated from each other, the elastic force generated by the compression of the second spring 26 will cause an extrusion effect to be generated in the air extraction cylinder 14, so that the gas sucked into the air extraction cylinder 14 is discharged through the exhaust pipe 16. It should be noted that the greater the vertical distance between the rotary motion round rod 23 and the axis of the rotating shaft 3, the greater the distance that the linear motion round rod 5 and the air extraction plug 25 move left and right, and the greater the gas that can be extracted at a single time. By adjusting the position of the rotary motion round rod 23, the volume of gas extracted at a single time can be adjusted, which is convenient for adjusting the internal pressure of the vacuum area.

[0042] According to the demand, the servo motor 2 drives the rotating shaft 3, the mounting block 17 and the rotary motion rod 23 to rotate counterclockwise, and the rotary motion rod 23 will contact with the linear motion rod 5 again. However, since the exhaust plug 25 is against the inside of one end of the exhaust cylinder 14, it cannot move rightward in the exhaust cylinder 14 at this time (see Appendix). Figure 1 In this way, the rotary motion rod 23 can make the linear motion rod 5, the limit block 6, the movable rod 10, the oil filling plug 24, the connecting piece 7 and the first magnetic block 8 move to the right synchronously, and finally the rotary motion rod 23 and the linear motion rod 5 are separated from each other. During the movement of the limit block 6 and the oil filling plug 24 to the right, the first spring 11 is compressed. Since the oil filling cylinder 12 cannot move during this process, an extrusion effect can be generated in the oil filling cylinder 12, so that the lubricating oil in the oil filling cylinder 12 can pass through the oil filling pipe 2 7 and the oil outlet hole 28 and finally sprayed toward the inner wall of the suction plug 25 and the suction cylinder 14, so that the friction between the suction plug 25 and the inner wall of the suction cylinder 14 can be reduced during the subsequent vacuum operation. When the rotary motion round rod 23 and the linear motion round rod 5 are separated from each other and no longer in contact, the elastic force generated by the compression of the first spring 11 can generate a suction effect in the oil filling cylinder 12, so that the lubricating oil in the oil storage box 15 can be sucked into the oil filling cylinder 12 through the oil inlet pipe 13 for the next lubrication;

[0043] When the first magnetic block 8 moves to the right, the first magnetic block 8 gradually approaches the second magnetic block 34, and the magnetic attraction between the two gradually increases. The magnetic attraction between the first magnetic block 8 and the second magnetic block 34 gradually becomes greater than the elastic force of the third spring 31, so that the knocking block 30 can move in the direction away from the filter 29, and the third spring 31 is compressed. When the first magnetic block 8 is returned to the initial position to the left by the first spring 11, the first magnetic block 8 gradually moves away from the second magnetic block 34, and the magnetic attraction between the two gradually decreases. The elastic force generated by the compression of the third spring 31 is gradually greater than the magnetic attraction between the first magnetic block 8 and the second magnetic block 34, so that the knocking block 30 can move in the direction close to the filter 29, so that the filter 29 can be knocked, so that the filter 29 can be prevented from being blocked. It should be noted that the greater the vertical distance between the rotating circular rod 23 and the axis of the rotating shaft 3, the greater the movement distance of the linear circular rod 5, the oil filling plug 24 and the first magnetic block 8, and thus more lubricating oil can be sprayed, and the knocking force of the knocking block 30 on the filter 29 is greater;

[0044] Through multiple vacuuming, bubbles and pores can be eliminated. For thick-walled parts, if the internal layer is not tight during the layering and then cured at high temperature, the internal metal parts and carbon fiber parts will induce internal stress due to different thermal expansion coefficients, material shrinkage and other factors, which will cause the product to warp and deform, affecting the mechanical properties. Thick-walled parts have a congenital defect during mold closing. Since each layer of cloth cannot be absolutely fitted without wrinkles according to theoretical data during layering, the layering error of thick-walled parts will inevitably reach an astonishing value after multiple accumulation. As a result, the actual thickness after paving is much greater than the theoretical thickness. When closing the mold, the material will be cut and the yarn will be caught. The difficulty of closing the mold affects the efficiency and product size accuracy. Multiple vacuuming can make the layering dense, reduce cutting, facilitate mold closing, effectively discharge the gas and volatile substances in the prepreg cloth, reduce the internal pore distribution of the product, make the product denser, and promote the flow of resin in the product. Since vacuuming will provide uniform surface pressure, the product will not have glue-rich areas and dry cloth areas. Since vacuuming will provide uniform surface pressure, it can be ensured that the appearance of the cloth will not have wrinkles or distortion before molding. Effectively improve product appearance quality.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multiple vacuuming device for thick-walled UAV tail cabin ply, comprising a housing (1), characterized in that: A vacuum cylinder (14) is fixedly mounted on the inner wall of one end of the shell (1), an oil storage box (15) is arranged above the vacuum cylinder (14), a vacuum pumping assembly is arranged on the shell (1), an adjustment assembly is arranged on the vacuum pumping assembly, an oil injection assembly is arranged on the vacuum pumping assembly, and an anti-blocking assembly is arranged on the vacuum pumping assembly.

2. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 1, characterized in that: The vacuum pumping assembly comprises a servo motor (2) fixedly mounted on an inner wall of a housing (1); an output shaft of the servo motor (2) is fixedly connected to a rotating shaft (3); a mounting block (17) is fixedly mounted on an outer wall of the rotating shaft (3); a rotating circular rod (23) is arranged on a side of the mounting block (17) close to the vacuum cylinder (14); an oil injection pipe (27) slidably connected to the vacuum cylinder (14) is penetrated through the outer wall of one end of the vacuum cylinder (14); an air extraction plug (25) is fixedly mounted on one end of the oil injection pipe (27) located inside the vacuum cylinder (14); The exhaust plug (25) is slidably connected to the inner wall of the exhaust cylinder (14); a second spring (26) is fixedly connected between the exhaust plug (25) and the inner wall of one end of the exhaust cylinder (14); a linear motion round rod (5) is provided on the side of the oil filling pipe (27) away from the exhaust plug (25); an exhaust pipe (9) and an exhaust pipe (16) connected to the interior of the exhaust cylinder (14); the ends of the exhaust pipe (9) and the exhaust pipe (16) connected to the exhaust cylinder (14) are both located on the side of the exhaust plug (25) away from the oil filling pipe (27).

3. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 2, characterized in that: The adjustment assembly comprises two fixed blocks (20) fixedly mounted on a side wall of the mounting block (17) close to the vacuum cylinder (14); an adjustment threaded rod (22) is rotatably connected between the two fixed blocks (20); an adjustment block (21) is threadedly sleeved on the outer wall of the adjustment threaded rod (22); the adjustment block (21) is fixedly connected to a rotating circular rod (23); an adjustment motor (4) is fixedly mounted on the outer wall of one of the fixed blocks (20); one end of the adjustment threaded rod (22) passes through one of the fixed blocks (20) and is fixedly connected to the output shaft of the adjustment motor (4).

4. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 3 is characterized in that: The oil injection assembly comprises an oil injection cylinder (12) fixedly mounted on the outer wall of the oil injection tube (27); the oil injection cylinder (12) is located outside the air extraction cylinder (14) and is connected to the oil injection tube (27); a movable rod (10) slidably connected to the outer wall of the oil injection cylinder (12) at one end away from the air extraction cylinder (14); an oil injection plug (24) is fixedly mounted on the end of the movable rod (10) located inside the oil injection cylinder (12); the oil injection plug (24) is slidably connected to the inner wall of the oil injection cylinder (12); a limit block is fixedly mounted on the end of the movable rod (10) located outside the oil injection cylinder (12) (6), the linear motion round rod (5) is fixedly connected to the top of the limit block (6), the oil filling cylinder (12) is provided with an oil inlet pipe (13) connected to the interior thereof, the end of the oil inlet pipe (13) away from the oil filling cylinder (12) is connected to the oil storage box (15), the end of the oil inlet pipe (13) connected to the oil filling cylinder (12) is located on the side of the oil filling plug (24) away from the movable rod (10), a first spring (11) is fixedly connected between the limit block (6) and the oil filling cylinder (12), and the oil filling pipe (27) is provided with an oil outlet hole (28) located in the vacuum cylinder (14).

5. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 4, characterized in that: The anti-blocking component comprises a connecting member (7) fixedly mounted on the bottom of the limit block (6); a first magnetic block (8) is fixedly mounted on one end of the connecting member (7) close to the exhaust pipe (9); a filter screen (29) is arranged in the exhaust pipe (9); an auxiliary block (33) is fixedly mounted in the exhaust pipe (9) and is located between the filter screen (29) and the first magnetic block (8); an auxiliary rod (32) is provided through the auxiliary block (33) and is slidably connected thereto; a knocking block (30) is fixedly mounted on one end of the auxiliary rod (32) close to the filter screen (29); a third spring (31) is fixedly connected between the knocking block (30) and the auxiliary block (33); and a second magnetic block (34) is fixedly mounted on one end of the auxiliary rod (32) close to the first magnetic block (8).

6. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 5, characterized in that: The air extraction pipe (9), the exhaust pipe (16), the oil filling pipe (27), the oil inlet pipe (13) and the oil outlet hole (28) are all provided with one-way valves, and the filter screen (29) is an elastic mesh surface.

7. The device for multiple vacuuming of thick-walled UAV tail cabin ply according to claim 6, characterized in that: A scale line (18) is provided on the outer wall of the mounting block (17), a pointer (19) is provided on the adjustment block (21), the adjustment block (21) is adjacent to the mounting block (17), and the first magnetic block (8) and the second magnetic block (34) have different magnetic properties.

8. The vacuuming method of the thick-walled UAV tail cabin layer multiple vacuuming device according to claim 7, characterized in that: The following steps are involved: The first step is to complete the laying of the adhesive film, interlayer foam and copper mesh embedded parts and complete the sealing test, and then connect the area to be vacuumed with the exhaust pipe (9); In the second step, the rotating rod (23) is positioned at a suitable position by adjusting the assembly, the servo motor (2) is started to rotate the rotating rod (23) clockwise, the gas to be vacuumed is extracted by the vacuum assembly, the servo motor (2) is started to rotate the rotating rod (23) counterclockwise as required, the oil injection assembly is used to spray oil lubrication on the inner wall of the vacuum plug (25) and the vacuum cylinder (14), and the anti-blocking assembly is used to knock the filter screen (29) on the elastic mesh surface with the knocking block (30), and this is repeated several times with the assistance of a pressure gauge until the mold closing standard is reached.

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