Mould for forming the skin of an aircraft fuselage

Abstract

This utility model provides a molding die for aircraft fuselage skin, belonging to the field of aircraft skin molding. It includes: a base; an outer support rotatably connected to the base; and a molding die body disposed within the outer support. The molding die body includes two die cylinders, both connected to the outer support and interconnected. The purpose is to solve the problem in existing aircraft fuselage skin molding dies that use segmented molding, failing to achieve integrated molding of the fuselage skin. The achieved technical effect is: realizing integrated molding of the aircraft fuselage skin.

Description

Technical Field

[0001] This utility model relates to the field of aircraft skin molding technology, and in particular to an aircraft fuselage skin molding mold. Background Technology

[0002] In the field of aircraft fuselage skin manufacturing, the production of transmission fuselage skin generally adopts a multi-mold modular molding approach. The mainstream industry practice is to divide the mold into two parts (top and bottom) or four parts (top, bottom, left, and right). After the skin components are formed separately using the modular molds, they are positioned using an assembly jig, and finally, the overall assembly is completed using structural adhesive combined with rivets. The existing fuselage skin manufacturing process has the following problems: First, the large number of mold sections not only occupies a lot of storage and space, but also makes it difficult to guarantee the consistency of precision among multiple mold sections, directly affecting the basic quality of the product; Second, assembly relies on specialized jigs, which are expensive to purchase, and require a large amount of manpower for assembly, debugging, and disassembly, resulting in low production efficiency; Third, during the assembly process, tooling errors are easily transferred to the product, causing overall precision deviations; Fourth, the bonding and riveting methods have hidden defects and risks, and problems such as cracking and delamination may occur during later use, posing a potential threat to flight safety.

[0003] In summary, traditional aircraft fuselage skin manufacturing suffers from several problems, including: large mold blocks leading to large storage space and difficulty in ensuring accuracy; assembly relying on high-cost specialized jigs with high labor input and low efficiency; tooling errors easily transferring to the product, causing overall accuracy deviations; and hidden defects and risks associated with adhesive and riveting connection methods. Utility Model Content

[0004] This utility model provides an aircraft fuselage skin forming mold to solve the defect of existing aircraft fuselage skin forming molds that form fuselage skin in sections and cannot form fuselage skin in one piece, thereby realizing one-piece forming of aircraft fuselage skin.

[0005] This utility model provides an aircraft fuselage skin forming mold, comprising: Base; External support, which is rotatably connected to the base; The forming mold body is set inside the outer support; The molding die body includes: There are two mold cylinders, both of which are connected to the outer support and are interconnected.

[0006] In addition, the aircraft fuselage skin forming mold according to this utility model may also have the following additional technical features: In some embodiments of this utility model, it further includes: A rotating assembly is located between the outer support and the base, and is used to drive the outer support to rotate.

[0007] In some embodiments of this utility model, the external support includes: The outer frame consists of two frames that are detachably connected. Each outer frame contains a mold cylinder, and both outer frames are rotatable relative to the base. There are two turntables, both of which abut against the rotating assembly. The first end of each outer frame is connected to one of the turntables, and the second end of each outer frame is connected to the other turntable.

[0008] In some embodiments of this utility model, it further includes: There are multiple locking mechanisms, and the two outer frames are connected by multiple locking mechanisms.

[0009] In some embodiments of this utility model, each locking mechanism includes: A handle, one end of which is rotatably connected to one of the outer frames; A connecting rod, one end of which is rotatably connected to the middle of the handle; A sliding connector, the first end of which is slidably connected to one of the outer frames, and the second end of which is fixedly connected to the other outer frame; A push block is installed at the first end of the sliding connector, and the push block is rotatably connected to the other end of the connecting rod.

[0010] In some embodiments of this utility model, it also includes; The inner support is connected to the outer support, and the outer wall of each mold cylinder is provided with an inner support.

[0011] In some embodiments of this utility model, it further includes: Internal and external connectors: Each mold cylinder is connected to the external support through multiple internal and external connectors.

[0012] In some embodiments of this utility model, each inner and outer connector includes: The first connecting part is connected to the outer support; The second connecting part is connected to the corresponding mold cylinder; The rod has one end connected to the first connecting part and the other end connected to the second connecting part.

[0013] In some embodiments of this utility model, the rotating assembly includes: A transmission device is installed at the first end of the base. A first support frame is installed at the first end of the base and is spaced apart from the transmission device; The second support frame is installed at the second end of the base; The drive motor has its output shaft connected to the input end of the transmission device. The driving wheel is connected to the output end of the transmission device, and the driving wheel abuts against one of the turntables; Driven wheel, rotatably connected to the first support frame, abutting against one of the turntables; The roller is rotatably connected to the second support frame and abuts against another turntable.

[0014] In some embodiments of this utility model, the transmission device includes: The transmission housing is installed at the first end of the base, and a drive motor is installed on one side of the transmission housing; the drive wheel is located on the other side of the transmission housing. The drive gear is rotatably connected to the transmission housing via a rotating shaft, and the output shaft of the drive motor is connected to the rotating shaft of the drive gear. The transmission gear is rotatably connected to the transmission housing via a rotating shaft, and meshes with the driving gear. Both driven gears are rotatably connected to the transmission housing via a rotating shaft. The driven gear meshes with the transmission gear, and the driving gear is connected to the driven gear via the rotating shaft of the driven gear.

[0015] In summary, this application includes the following beneficial technical effects: by connecting two mold cylinders to form a mold body and combining the support of the external support, the aircraft fuselage skin can be integrally molded by the mold, reducing product segmentation and the number of molds.

[0016] The aircraft fuselage skin can be integrally molded using this mold, avoiding processes such as bonding, gluing, or riveting after the parts are demolded. This saves manufacturing costs and avoids the high precision requirements of assembling parts after demolding, indirectly increasing processing accuracy, improving product quality and strength, and effectively reducing internal defects in the aircraft fuselage skin. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A perspective view of an aircraft fuselage skin molding die according to some embodiments of the present invention is shown schematically.

[0018] Figure 2 A perspective view of an aircraft fuselage skin molding mold according to some embodiments of the present invention, excluding the base, is shown schematically.

[0019] Figure 3 The diagram schematically illustrates an aircraft fuselage skin molding die according to some embodiments of the present invention. Figure 2 Part II is a magnified view.

[0020] Figure 4 The diagram schematically illustrates an aircraft fuselage skin molding die according to some embodiments of the present invention. Figure 2 A magnified view of part I.

[0021] Figure 5 A partially enlarged view of part III of an aircraft fuselage skin molding die according to some embodiments of the present invention is shown schematically.

[0022] Figure 6 A perspective view of the base of an aircraft fuselage skin molding mold according to some embodiments of the present invention is shown schematically.

[0023] Figure 7 A partially enlarged view of the base of an aircraft fuselage skin molding mold according to some embodiments of the present invention is shown schematically.

[0024] Figure 8 A partially enlarged view of part II of the base of an aircraft fuselage skin molding mold according to some embodiments of the present invention is shown schematically.

[0025] Figure 9 A perspective view schematically showing the connection between the inner support and the molding die body of an aircraft fuselage skin molding die according to some embodiments of the present invention.

[0026] Figure 10 The diagram shows a partially enlarged perspective view of the connection between the inner support and the mold body of an aircraft fuselage skin molding mold according to some embodiments of the present invention.

[0027] Figure 11 A schematic cross-sectional view of the base of an aircraft fuselage skin molding mold according to some embodiments of the present invention is shown.

[0028] Figure label: 1. Base; 11. Base frame; 12. Wheel bracket; 13. Caster wheel; 16. Support leg assembly; 161. Support rod; 162. Connecting ring; 2. Outer support; 21. Outer frame; 22. Turntable; 23. Connecting piece; 24. I-beam connector; 25. Support connector; 26. Moving wheel; 27. Transition connector; 3. Inner support; 4. First connecting assembly; 41. Clamping part; 411. Clamping part; 412. Connecting plate; 413. Connecting hole; 42. Pin; 43. Connecting rod; 44. Connecting angle; 45. Connecting nut 5. Mold cylinder; 51. Cylinder fold; 6. Locking mechanism; 61. Handle; 62. Connecting rod; 63. Push block; 64. Sliding connector; 65. Long slot; 7. Rotating assembly; 71. Transmission device; 711. Transmission housing; 712. Drive gear; 713. Transmission gear; 714. Driven gear; 72. Drive motor; 73. Drive wheel; 74. Driven wheel; 75. First support frame; 76. Roller; 77. Second support frame; 8. Inner and outer connecting parts; 81. Rod body; 82. First connecting part; 83. Second connecting part. Detailed Implementation

[0029] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0030] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0031] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0032] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may also be rotated 90 degrees or in other orientations, and the spatial relative descriptors used in the text will be interpreted accordingly.

[0033] like Figures 1 to 11 As shown, according to an embodiment of the first aspect of this utility model, an aircraft fuselage skin forming mold is proposed, including a base 1, an outer support 2 and a forming mold body, wherein the forming mold body is disposed inside the outer support 2, and the outer support 2 is rotatably connected to the base 1. The molding die body includes two mold cylinders 5, both of which are connected to the outer support 2 and are interconnected.

[0034] In the above embodiments, it should be noted that the base 1 includes a base frame 11, a wheel bracket 12, casters 13, and support leg assemblies 16. Multiple casters 13 are connected to both sides of the base frame 11, and each caster 13 is connected to the base frame 11 through a wheel bracket 12. At least two support leg assemblies 16 are also provided on both sides of the base frame 11. Each support leg assembly 16 includes a support rod 161 and a connecting ring 162. The support rod 161 is a hydraulic lifting rod. The telescopic part of the support rod 161 is connected to the connecting ring 162 by welding or screwing. The connecting ring 162 is connected to the base frame 11 by welding or screwing. When the support rod 161 is extended, the casters 13 can leave the ground. The outer support 2 is rotatably connected to the base frame 11.

[0035] Both mold cylinders 5 are shaped like half of the aircraft fuselage skin, and the shape of the space on the inner side wall after the two mold cylinders 5 are connected and combined is the shape of the entire aircraft fuselage skin.

[0036] The working principle of this mold is as follows: First, a vacuum is drawn into the interior of the mold body formed by connecting two mold cylinders 5. Then, the prepreg of the aircraft fuselage skin (i.e., the carbon fiber before hardening) is applied to the inner wall of the mold body formed by connecting the two mold cylinders 5. During application, the outer support 2 can be rotated to increase the application efficiency while simultaneously allowing for application on the top, bottom, left, and right sides, as well as spiral and other application methods. After the vacuum film is applied to the prepreg, and the prepreg hardens to form a complete carbon fiber fuselage skin, the two mold cylinders 5 are separated, and the carbon fiber fuselage skin can be removed. This allows for continuous multi-directional carbon fiber application of the aircraft fuselage skin. When the mold rotates at a constant speed, the fibers can move longitudinally according to the rotation speed, achieving spiral fiber application, effectively increasing strength and reducing fiber costs while maintaining sufficient strength. In the integrated molding of the aircraft fuselage skin, there is no need for product bonding or riveting, effectively improving the internal quality of the aircraft fuselage skin.

[0037] The technical effect achieved by the above embodiments is that by connecting two mold cylinders 5 to form a molding mold body and combining the supporting role of the outer support 2, the aircraft fuselage skin can be integrally molded by the mold, reducing product segmentation and the number of molds.

[0038] The aircraft fuselage skin can be integrally molded using this mold, avoiding processes such as bonding, gluing, or riveting after the parts are demolded. This saves manufacturing costs and avoids the high precision requirements of assembling parts after demolding, indirectly increasing processing accuracy, improving product quality and strength, and effectively reducing internal defects in the aircraft fuselage skin.

[0039] Optional, such as Figure 1 , Figures 6 to 8 and Figure 11 As shown, it also includes a rotating component 7, which is disposed between the outer support 2 and the base 1. The rotating component 7 is used to drive the outer support 2 to rotate.

[0040] In the above optional embodiments, it should be noted that the rotating component 7 may include a motor, a motor bracket, a drive wheel, and a driven wheel 74. The motor bracket is installed at the first end of the base frame 11, the motor is installed on the motor bracket, the output shaft of the motor is connected to the drive wheel, and the driven wheel 74 is connected to the second end of the base frame 11 through an existing bracket. Both the drive wheel and the driven wheel 74 abut against the outer support 2 and drive the outer support 2 to rotate by friction. Alternatively, the output shaft of the motor can drive the rotating shaft to rotate, thereby driving the outer support 2 to rotate.

[0041] The beneficial effect of the above optional embodiments is that the rotation component 7 ensures the reliable rotation of the outer support 2, thereby driving the molding die body to rotate reliably.

[0042] Optional, such as Figures 1 to 5 As shown, the outer support 2 includes two outer frames 21 and a turntable 22. The two outer frames 21 are detachably connected. Each outer frame 21 is connected to a mold cylinder 5. Both outer frames 21 are rotatable relative to the base 1. There are two turntables 22. The first end of each outer frame 21 is connected to one of the turntables 22, and the second end of each outer frame 21 is connected to the other turntable 22. Both turntables 22 abut against the rotating assembly 7.

[0043] In the above optional embodiments, it should be noted that a connecting piece 23 is also included. Each turntable 22 is made of two semi-circular plates, which are connected by the connecting piece 23. Each semi-circular plate is connected to an outer frame 21.

[0044] The outer support 2 also includes movable wheels 26, with multiple movable wheels 26 connected to the bottom of one of the outer frames 21 to enable the outer support 2 to move.

[0045] The advantages of the above optional embodiments are: the reliability of the rotation of the mold is increased by setting the turntable 22 through the outer frame 21.

[0046] Optional, such as Figures 1 to 5 As shown, it also includes multiple locking mechanisms 6, and the two outer frames 21 are connected by multiple locking mechanisms 6.

[0047] In the above optional embodiments, it should be noted that the locking mechanism 6 can be an existing locking mechanism 6 structure that realizes relative locking between the two outer frames 21. The specific locking mechanism 6 structure will not be discussed in detail.

[0048] Multiple locking mechanisms 6 are connected between the first side of one outer frame 21 and the first side of another outer frame 21, and multiple locking mechanisms 6 are connected between the second side of one outer frame 21 and the second side of another outer frame 21.

[0049] It also includes multiple I-beam connectors 24 and multiple support connectors 25. Each I-beam connector 24 and two support connectors 25 are combined to form a set of I-beam connecting devices. In each set of I-beam connecting devices, one support connector 25 is installed on one of the outer frames 21, and the other support connector 25 is installed on another outer frame 21. The two ends of the I-beam connector 24 are detachably connected to the two support connectors 25 respectively.

[0050] Optional, such as Figures 1 to 5 As shown, each locking mechanism 6 includes a handle 61, a connecting rod 62, a push block 63, and a sliding connector 64. One end of the handle 61 is rotatably connected to one of the outer frames 21, one end of the connecting rod 62 is rotatably connected to the middle of the handle 61, the first end of the sliding connector 64 is slidably connected to one of the outer frames 21, the second end of the sliding connector 64 is fixedly connected to the other outer frame 21, the push block 63 is installed on the first end of the sliding connector 64, and the push block 63 is rotatably connected to the other end of the connecting rod 62.

[0051] In the above optional embodiments, it should be noted that the first end of the sliding connector 64 is provided with an elongated hole 65, and the screw passes through the elongated hole 65 and is screwed to the corresponding outer frame 21. The second end of the sliding connector 64 is connected to another corresponding outer frame 21 by means of screwing or welding.

[0052] The beneficial effects of the above optional embodiments are as follows: through the linkage design of handle 61, connecting rod 62, push block 63 and sliding connector 64, the rotational motion of handle 61 is efficiently converted into the linear sliding of sliding connector 64, realizing the relative opening and closing action of the two outer frames 21, thereby driving the relative opening and closing of the two mold cylinders 5, and making it easier to remove the aircraft skin after it is formed.

[0053] Optional, such as Figures 1 to 5 and Figure 9 As shown, it also includes an inner support 3. Each mold cylinder 5 has an inner support 3 on its outer side wall, and the inner support 3 is connected to the outer support 2.

[0054] In the above optional embodiments, it should be noted that a plurality of first connecting components 4 are also included, wherein a plurality of first connecting components 4 are connected between a first side of one outer frame 21 and a first side of another outer frame 21, and a plurality of first connecting components 4 are connected between a second side of one outer frame 21 and a second side of another outer frame 21.

[0055] The inner support 3 is a frame structure. There are two inner supports 3, which are attached to the outer walls of the two mold cylinders 5 in a one-to-one correspondence to ensure the strength of the mold cylinders 5.

[0056] Each first connecting component 4 includes a clamping member 41, a pin 42, a connecting rod 43, a connecting angle 44, and a connecting nut 45. One end of the clamping member 41 is welded or screwed to the inner support 3, and the other end of the clamping member 41 is connected to one end of the connecting rod 43 through the pin 42. The other end of the connecting rod 43 is connected to one side of the connecting angle 44 through the connecting nut 45, and the other side of the connecting angle 44 is welded or screwed to the outer frame 21.

[0057] Each clamping component 41 includes a clamping part 411, a connecting plate 412, and a connecting hole 413. One end of the connecting plate 412 is connected to two clamping parts 411, which are arranged at an angle. The end of each clamping part 411 facing away from the connecting plate 412 is welded or screwed to the inner support 3. The connecting plate 412 has a connecting hole 413, and the pin 42 is inserted into the connecting hole 413.

[0058] It also includes transition connectors 27. Multiple transition connectors 27 are provided on both sides of each outer frame 21. Multiple transition connectors 27 on one outer frame 21 are connected to multiple transition connectors 27 on the other outer frame 21 in a one-to-one correspondence via screws and nuts.

[0059] The beneficial effect of the above optional embodiments is that the stability of the mold cylinder 5 is ensured by the setting of the inner support 3.

[0060] Optional, such as Figures 1 to 5 and Figure 9 and Figure 10 As shown, it also includes inner and outer connecting parts 8, and each mold cylinder 5 is connected to the outer support 2 through multiple inner and outer connecting parts 8.

[0061] In the above optional embodiments, it should be noted that each mold cylinder 5 has a cylindrical flange 51 integrally formed on both ends, and a sealing strip is provided between the cylindrical flange 51 of one mold cylinder 5 and the cylindrical flange 51 of the other mold cylinder 5.

[0062] Each mold cylinder 5 is connected to the corresponding outer frame 21 via multiple inner and outer connectors 8.

[0063] The advantages of the above optional embodiments are that the reliability of the connection between the mold cylinder 5 and the outer support 2 is ensured by the setting of the inner and outer connecting parts 8.

[0064] Optional, such as Figure 10As shown, each inner and outer connector 8 includes a rod 81, a first connecting part 82 and a second connecting part 83. The first connecting part 82 is connected to the outer support 2, and the second connecting part 83 is connected to the corresponding mold cylinder 5. One end of the rod 81 is connected to the first connecting part 82, and the other end of the rod 81 is connected to the second connecting part 83.

[0065] In the above optional embodiments, it should be noted that the cross-sectional shape of the first connecting part 82 is "L".

[0066] The second connecting part 83 is a plate-shaped structure, and the first connecting part 82 is installed inside the cylindrical flange 51 of the mold cylinder 5 by welding or screwing. Optional, such as Figure 6 , Figure 7 and Figure 11 As shown, the rotating assembly 7 includes a transmission device 71, a drive motor 72, a driving wheel 73, a driven wheel 74, a first support frame 75, a roller 76, and a second support frame 77. The transmission device 71 and the first support frame 75 are spaced apart and installed at the first end of the base 1, and the second support frame 77 is installed at the second end of the base 1. The output shaft of the drive motor 72 is connected to the input end of the transmission device 71. The output end of the transmission device 71 is connected to the driving wheel 73. The driven wheel 74 is rotatably connected to the first support frame 75, and the roller 76 is rotatably connected to the second support frame 77. The driving wheel 73 and the driven wheel 74 both abut against one of the turntables 22, and the roller 76 abuts against the other turntable 22.

[0067] In the above optional embodiments, it should be noted that the driving wheel 73 and the driven wheel 74 are spaced apart; There are two second support frames 77, which are spaced apart at the second end of the base 1. Each second support frame 77 is rotatably connected to a roller 76.

[0068] The advantages of the above optional embodiments are as follows: the cooperative arrangement of the drive motor 72, the driving wheel 73, the driven wheel 74, the first support frame 75, the roller 76 and the second support frame 77 ensures the reliability of the rotation of the mold.

[0069] Optional, such as Figure 11As shown, the transmission device 71 includes a transmission housing 711, a driving gear 712, a transmission gear 713, and a driven gear 714. The transmission housing 711 is installed at the first end of the base 1. A drive motor 72 is installed on one side of the transmission housing 711. The driving gear 712, transmission gear 713, and driven gear 714 are all rotatably connected to the transmission housing 711 through a rotating shaft. The output shaft of the drive motor 72 is connected to the driving gear 712. The transmission gear 713 meshes with the driving gear 712, and the driven gear 714 meshes with the transmission gear 713. The driving wheel 73 is connected to the driven gear 714 through a rotating shaft. The driving wheel 73 is located on the other side of the transmission housing 711.

[0070] The advantages of the above optional embodiments are: the gear transmission ensures transmission accuracy, further increasing the reliability and precision of the mold rotation.

[0071] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An aircraft fuselage skin forming tool, characterized in that, include: Base (1); An outer support (2) is rotatably connected to the base (1); The molding die body is disposed within the outer support (2); The molding die body includes: The mold cylinder (5) consists of two mold cylinders, both of which are connected to the outer support (2) and are interconnected.

2. The aircraft fuselage skin forming mold of Claim 1, wherein, Also includes: Rotating component (7) is disposed between the outer support (2) and the base (1), and the rotating component (7) is used to drive the outer support (2) to rotate.

3. An aircraft fuselage skin forming tool as claimed in claim 2, characterised in that, The external support (2) includes: The outer frame (21) consists of two outer frames (21), which are detachably connected. Each outer frame (21) is connected to a mold cylinder (5), and both outer frames (21) are rotatable relative to the base (1). There are two turntables (22), both of which abut against the rotating assembly (7). The first end of each outer frame (21) is connected to one of the turntables (22), and the second end of each outer frame (21) is connected to the other turntable (22).

4. An aircraft fuselage skin forming tool as claimed in claim 3, characterised in that, Also includes: Locking mechanism (6), there are multiple locking mechanisms (6), and the two outer frames (21) are connected by multiple locking mechanisms (6).

5. An aircraft fuselage skin forming tool as claimed in claim 4, characterised in that, Each of the locking mechanisms (6) includes: A handle (61), one end of which is rotatably connected to one of the outer frames (21); Link (62), one end of which is rotatably connected to the middle of the handle (61); A sliding connector (64) is provided, wherein the first end of the sliding connector (64) is slidably connected to one of the outer frames (21), and the second end of the sliding connector (64) is fixedly connected to the other outer frame (21). A push block (63) is installed at the first end of the sliding connector (64), and the push block (63) is rotatably connected to the other end of the connecting rod (62).

6. The aircraft fuselage skin forming mold of Claim 1, wherein, Also includes; The inner support (3) is connected to the outer support (2), and the outer side wall of each mold cylinder (5) is provided with the inner support (3).

7. An aircraft fuselage skin forming tool as claimed in claim 6, characterised in that, Also includes: The inner and outer connecting parts (8) are used to connect each mold cylinder (5) to the outer support (2) through multiple inner and outer connecting parts (8).

8. An aircraft fuselage skin forming tool as claimed in claim 7, characterised in that, Each of the aforementioned inner and outer connectors (8) includes: The first connecting part (82) is connected to the outer support (2); The second connecting part (83) is connected to the corresponding mold cylinder (5); A rod (81), one end of which is connected to the first connecting part (82), and the other end of which is connected to the second connecting part (83).

9. The aircraft fuselage skin forming mold of Claim 3, wherein, The rotating assembly (7) includes: A transmission device (71) is mounted on the first end of the base (1); A first support frame (75) is mounted on the first end of the base (1) and is spaced apart from the transmission device (71); The second support frame (77) is mounted on the second end of the base (1); A drive motor (72) is provided, the output shaft of which is connected to the input end of the transmission device (71); The drive wheel (73) is connected to the output end of the transmission device (71), and the drive wheel (73) abuts against one of the turntables (22); Driven wheel (74), the driven wheel (74) is rotatably connected to the first support frame (75), and the driven wheel (74) abuts against one of the turntables (22); Roller (76), which is rotatably connected to the second support frame (77), and abuts against another turntable (22).

10. The aircraft fuselage skin forming mold according to claim 9, characterized in that, The transmission device (71) includes: A transmission housing (711) is installed at the first end of the base (1), and the drive motor (72) is installed on one side of the transmission housing (711); the drive wheel (73) is located on the other side of the transmission housing (711). The drive gear (712) is rotatably connected to the transmission housing (711) via a rotating shaft, and the output shaft of the drive motor (72) is connected to the rotating shaft of the drive gear (712). A transmission gear (713) is rotatably connected to the transmission housing (711) via a rotating shaft, and the transmission gear (713) meshes with the drive gear (712). Driven gear (714), each driven gear (714) is rotatably connected to the transmission housing (711) via a rotating shaft. The driven gear (714) meshes with the transmission gear (713). The driving wheel (73) is connected to the driven gear (714) via the rotating shaft of the driven gear (714).

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