A composite material pressure-resistant shell metal end frame bonding tool and method

Abstract

The present invention relates to the technical field of composite materials, and in particular to a tool and method for bonding a metal end frame of a composite material pressure-resistant shell, the tool comprising a base, a guide rail is arranged along the length above the base, a fixed vertical plate is fixedly connected to one end of the guide rail, a loading plate is slidably installed above the guide rail, a loading platform is installed on the outer side of the loading plate, the loading platform is fixedly connected to the base, and the loading platform is used to push the base to slide along the guide rail; one side of the loading plate and the fixed vertical plate are both oppositely provided with mounting plates for mounting the metal end frame, and the mounting plates are rotatably connected to the loading plate and the fixed vertical plate respectively through a rotating device; an angle sensor is also fixedly connected to one side of each mounting plate; an adjustment bracket for mounting and adjusting the height of the pressure-resistant shell is also installed above the base; it also includes a controller and a comparison module, each angle sensor is electrically connected to the comparison module, the comparison module is electrically connected to the controller, and the controller is electrically connected to the linear moving mechanism and the rotating device respectively.

Description

Technical Field

[0001] The invention relates to the technical field of composite materials, and in particular to a bonding tool and method for a metal end frame of a composite pressure-resistant shell. Background Art

[0002] Carbon fiber composites have obvious advantages when used in underwater pressure hulls, such as high rearrangement ratio, good modulus and strength. Compared with commonly used metal materials, carbon fiber composites have more ideal specific strength and specific modulus, and have great advantages in corrosion resistance. At the same time, composites have good designability, that is, based on the anisotropic material foundation, the carbon fiber composite layup can be designed according to parameters such as the aspect ratio of the pressure hull and the operating pressure to form an optimization plan, further enhancing the application advantages. Therefore, composites are widely used in underwater equipment.

[0003] The pressure hull made of carbon fiber composite materials is one or several sections of the equipment and needs to be connected to the bow and stern. In order to achieve effective connection, metal end frames are usually designed at both ends of the composite pressure hull section. The composite pressure hull and the metal end frames are connected by bonding to form an integral section, and the interfaces of the metal end frames are matched with other sections to achieve the effect of underwater sealing and connection. With the continuous expansion of equipment application scenarios and the requirements for the overall shape and position tolerances after the connection of each section, the requirements for the parallelism of the metal end frames at both ends of the composite section and the radial connection positioning are gradually increased. When the sections are connected as a whole, this accumulated deviation will cause the hidden danger of the equipment failing to achieve the designed function. Therefore, how to improve the parallelism of the metal end frame of the composite section and reduce the radial angle deviation are the key parameters of the bonding molding process of the composite pressure hull and the metal end frame, and are also difficult to control during the implementation of the process.

[0004] For example, Chinese patent CN114083805B discloses a bonding tool and bonding and molding method for a large-sized special-shaped heat-resistant shell, and specifically discloses the use of a bonding tool to complete the bonding of a large-sized special-shaped shell and a special-shaped heat-resistant layer, and adjusts the posture of the heat-resistant layer by the bonding tool to ensure the uniformity of the suit gap, and selects a silicone rubber adhesive with good bonding and thermal matching properties to ensure the reliability of the suit bonding quality; For example, Chinese patent CN109910321A discloses a method for preparing a low-modulus, low-thermal-conductivity, shear-resistant buffer layer for a cabin shell assembly, and specifically discloses the preparation, pasting and suiting of a buffer sheet to obtain a buffer layer between a composite shell and a metal shell. The prepared buffer layer provides a release space for the thermal deformation between the inner and outer layers of different materials, solves the problems of difficult thermal matching, fast heat transfer and low bonding reliability of existing metal shells and composite shells, and ensures product quality; however, the above two patents involve the bonding of special-shaped composite shells with metal end frames or linings. This type of product has no strict regulations on radial angle deflection because the product appearance is an irregular special-shaped body during processing and matching, which can achieve good self-positioning. Moreover, since this type of product does not need to achieve the parallelism of the metal end frames at both ends, the load pressure during the bonding process is also low. Due to the large bonding area, the requirements for the thickness of the adhesive layer are not high. From the invention of CN 114083805 B, it can be seen that a thickness of less than 0.3 mm can meet the requirements, which is quite different from the product type and usage characteristics involved in the present invention.

[0005] For example, Chinese patent CN221212788U discloses a tool for bonding flanges at both ends of a large-size composite roller, which specifically discloses that a fixing frame, a product flange, a steel cable, a fixed pipe, a first baffle, a second baffle, an anti-unhooking hook, an electric hoist, a mobile fixing vehicle and a fixing ring are used in combination to support the flange after bonding to prevent the flange from being displaced during the bonding process, resulting in a deviation in product accuracy. It is similar in form to the product structure involved in the present invention, but the accuracy control is quite different, and there is a problem that the parallelism of the flanges at both ends cannot be guaranteed. Moreover, the roller involved in the invention has no requirements for radial angle deviation. When the electric hoist is loaded, due to the elasticity of the steel cable itself, the bonding loading force on the side closer to the electric hoist is bound to be larger, resulting in a difference in loading force on both sides.

[0006] Therefore, in view of the above problems, the present invention urgently needs to provide a composite material pressure-resistant shell metal end frame bonding tool and method. Summary of the invention

[0007] The technical problem solved by the present invention is to provide a composite pressure-resistant shell metal end frame bonding tool and method, which solves the problems of parallelism and radial angle deviation of the metal end frame of the composite pressure-resistant shell existing in the prior art through designs such as mounting plate parallelism control, angle control and guide rail precision control, so that the composite pressure-resistant shell and the metal end frame can have high-precision end frame parallelism and low radial angle deviation after bonding.

[0008] The present invention provides a composite material pressure-resistant shell metal end frame bonding tool, comprising a base, and a loading guide rail is arranged along the length above the base;

[0009] A fixed vertical plate and a loading plate are provided above the base, wherein the fixed vertical plate is fixedly connected to the base, the loading plate is slidably connected to the loading guide rail, and one side of the loading plate is connected to the loading platform; the loading platform is fixed above the base and is used to push the loading plate to slide along the loading guide rail;

[0010] A first mounting plate and a second mounting plate are provided between the fixed vertical plate and the loading plate, and the first mounting plate and the second mounting plate are used to coaxially mount the metal end frame; the first mounting plate is rotatably connected to the fixed vertical plate through a first rotating mechanism, and the second mounting plate is rotatably connected to the loading plate through a second rotating mechanism; angle sensors are mounted on both the first mounting plate and the second mounting plate;

[0011] It also includes a controller and a comparison module, the comparison module is used to receive the angle data of the first mounting plate and the second mounting plate sent from the angle sensor, compare with the set value, and send the comparison result to the controller; the controller is used to receive the information from the comparison module and control the first rotating mechanism and the second rotating mechanism to rotate according to the comparison result, so that the angles of the first mounting plate and the second mounting plate are consistent;

[0012] A plurality of adjustment brackets are installed at intervals along the length direction above the guide rail for placing the pressure-resistant shell and adjusting the axis of the pressure-resistant shell to coincide with the axis of the first mounting plate and the second mounting plate.

[0013] Preferably, the adjustment bracket includes an adjustment base, and a plurality of horizontal guide rails are arranged at intervals above the adjustment base, and each horizontal guide rail is arranged perpendicular to the loading guide rail; two support seats are slidably installed above each horizontal guide rail, and support wheels for supporting the pressure-resistant shell are rotatably installed above the two support seats, and the axes of the two support wheels are parallel to the axis of the pressure-resistant shell.

[0014] Preferably, the accuracy of the loading guide rail is less than 0.02 mm / m, the parallelism between the first mounting plate and the second mounting plate is less than 0.05, and the power of the loading platform is hydraulic loading.

[0015] Preferably, two angle sensors are respectively installed on the relative outer sides of the first mounting plate and the second mounting plate, and the connecting line of the two angle sensors on the first mounting plate passes through the center of the first mounting plate, and the connecting line of the two angle sensors on the second mounting plate passes through the center of the second mounting plate.

[0016] Preferably, the first mounting plate, the second mounting plate and the metal end frame are positioned by pins and detachably connected by bolts.

[0017] Preferably, the accuracy of each angle sensor is less than 1'.

[0018] The present invention also provides a composite material pressure hull metal end frame bonding method based on the composite material pressure hull metal end frame bonding tool, comprising the following steps:

[0019] Place the pressure-resistant shell to be installed on the adjusting bracket, and adjust the adjusting bracket so that the axis of the pressure-resistant shell coincides with the axes of the first mounting plate and the second mounting plate;

[0020] Install the two metal end frames on the opposite inner sides of the first mounting plate and the second mounting plate respectively;

[0021] The angle data of the first mounting plate and the second mounting plate are obtained by the angle sensor and transmitted to the comparison module, the comparison module compares the angle data of the first mounting plate and the second mounting plate and sends the comparison result to the controller, and the controller controls the first rotating mechanism and the second rotating mechanism to rotate the first mounting plate and the second mounting plate respectively so that the angles of the first mounting plate and the second mounting plate are consistent;

[0022] Applying adhesive to the bonding surfaces of the two ends of the pressure-resistant shell and the two metal end frames;

[0023] The loading platform pushes the loading plate to move along the loading guide rail toward the fixed vertical plate until the load applied by the loading platform to the loading plate reaches a set value, and then maintains the load;

[0024] After the adhesive is cured, the loading plate is reset, and the metal end frame is removed from the sides of the first mounting plate and the second mounting plate to obtain a composite pressure-resistant shell with metal end frames.

[0025] Preferably, before installing the metal end frame, the bonding surface of the metal end frame is sandblasted; before installing the pressure-resistant shell, the bonding surface of the pressure-resistant shell is polished with sandpaper.

[0026] Preferably, when installing the metal end frame, firstly, the metal end frame and the first mounting plate and the second mounting plate are positioned respectively using pins, and then the metal end frame and the first mounting plate and the second mounting plate are locked respectively using screws.

[0027] Preferably, for adhesives that require high-temperature curing, connecting screw holes can be opened on the sides of the first mounting plate and the second mounting plate, and the first mounting plate and the second mounting plate can be connected using screws. After the adhesive is pre-cured, the first mounting plate and the second mounting plate are removed from the bonding tooling of the metal end frame of the composite pressure-resistant shell and placed in a curing furnace for high-temperature curing.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention provides a method for bonding metal end frames of composite pressure hulls, focusing on solving the problems of coaxiality, radial angle deviation, parallelism, adhesive layer thickness and uniformity encountered in the bonding process of composite pressure hull metal end frames. By accurately positioning and connecting the tooling and the metal end frames, the composite pressure hull can have high-precision end frame parallelism and low radial angle deviation after bonding. The method can be applied to various types of products that require metal end frames to be bonded, such as special-shaped antenna covers and composite engines, and can be widely used in the fields of aerospace, weapons and ships.

[0030] 2. The present invention sets screw holes and pin holes matching the metal end frames on the side of each mounting plate, and then uses pins and bolts to position and mount the metal end frames on the side of the mounting plates. The metal end frames are controlled by controlling the parallelism of the first mounting plate and the second mounting plate to ensure the parallelism of the metal end frames.

[0031] 3. The present invention uses a loading platform to push the loading plate to slide along the loading guide rail to load and bond the metal end frame and the pressure-resistant shell. The adhesive is a non-Newtonian fluid. During the bonding process, as the bonding surfaces of the shell and the metal end frame gradually overlap, the adhesive on the bonding surface is compressed and slowly squeezed out from the inside to the outside. At this time, the loading plate can provide continuous load supplementation to avoid stress concentration, local glue shortage, sealing failure and other problems when the pressure-resistant shell and the metal end frame are bonded, and the coaxiality of the pressure-resistant shell and the metal end frame after bonding is ensured. The thickness of the adhesive layer on the bonding surface of the composite material pressure-resistant shell and the metal end frame and the uniformity of the adhesive layer are well controlled, thereby improving the safety and reliability of the product, reducing the stress concentration and sealing failure caused by bonding failure, and significantly improving the reliability of the product during service.

[0032] 4. The present invention is provided with angle sensors on the first mounting plate and the second mounting plate. The angle sensors can send angle data to the controller. The controller controls the first rotating mechanism and the second rotating mechanism to rotate the first mounting plate and the second mounting plate respectively so that the angles of the two metal end frames remain consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram (stereoscopic diagram) of a metal end frame bonding tool for a composite pressure-resistant shell according to an embodiment of the present invention;

[0034] Figure 2 is an operation flow chart of a method for bonding a metal end frame of a composite pressure-resistant shell according to an embodiment of the present invention;

[0035] Figure 3 It is a schematic diagram of the installation of the metal end frame bonding tool of the composite pressure-resistant shell according to the embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of installation from another angle of the metal end frame bonding tool for the composite pressure-resistant shell according to the embodiment of the present invention;

[0037] Figure 5 It is a structural schematic diagram (stereoscopic diagram) of the adjustment bracket described in an embodiment of the present invention.

[0038] Among them: 1. base; 2. loading guide rail; 3. adjustment bracket; 301. adjustment base; 302. horizontal guide rail; 303. support seat; 304. support wheel; 4. metal end frame; 5. first mounting plate; 6. angle sensor; 7. loading plate; 8. loading platform; 9. pin; 10. fixed vertical plate; 11. second mounting plate; 12. first rotating mechanism; 13. second rotating mechanism. DETAILED DESCRIPTION

[0039] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solution of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 , Figure 3 , Figure 4 As shown, this embodiment provides a composite pressure-resistant shell metal end frame bonding tool, including a base 1, and a loading guide rail 2 is arranged along the length above the base 1;

[0041] A fixed vertical plate 10 and a loading plate 7 are provided above the base 1, wherein the fixed vertical plate 10 is fixedly connected to the base 1, the loading plate 7 is slidably connected to the loading guide rail 2, and one side of the loading plate 7 is connected to the loading platform 8; the loading platform 8 is fixed above the base 1 and is used to push the loading plate 7 to slide along the loading guide rail 2;

[0042] A first mounting plate 5 and a second mounting plate 11 are provided between the fixed vertical plate 10 and the loading plate 7, and the first mounting plate 5 and the second mounting plate 11 are used to coaxially mount the metal end frame 4; the first mounting plate 5 is rotatably connected to the fixed vertical plate 10 through a first rotating mechanism 12, and the second mounting plate 11 is rotatably connected to the loading plate 7 through a second rotating mechanism 13; an angle sensor 6 is mounted on both the first mounting plate 5 and the second mounting plate 11;

[0043] It also includes a controller and a comparison module, the comparison module is used to receive the angle data of the first mounting plate 5 and the second mounting plate 11 sent from the angle sensor 6, compare with the set value, and send the comparison result to the controller; the controller is used to receive the information from the comparison module and control the first rotating mechanism 12 and the second rotating mechanism 13 to rotate according to the comparison result, so that the angles of the first mounting plate 5 and the second mounting plate 11 are consistent;

[0044] A plurality of adjustment brackets 3 are installed above the guide rail 2 at intervals along the length direction, for placing the pressure-resistant shell and adjusting the axis of the pressure-resistant shell to coincide with the axis of the first mounting plate 5 and the second mounting plate 11 .

[0045] 1. The present invention provides a composite pressure hull metal end frame bonding tool, which focuses on solving the problems of coaxiality, radial angle deviation, parallelism, adhesive layer thickness and uniformity encountered in the bonding process of the composite pressure hull metal end frame. By accurately positioning and connecting the tool and the metal end frame 4, the composite pressure hull can have high-precision end frame parallelism and low radial angle deviation after bonding. It can be used for various different types of products that require metal end frame 4 bonding, such as special-shaped antenna covers and composite engines, and can be widely used in the fields of aerospace, weapons and ships.

[0046] 2. The present invention sets screw holes and pin holes matching the metal end frame 4 on the side of each mounting plate, and then uses the pins 9 and bolts to position and install the metal end frame 4 on the side of the mounting plate. The metal end frame 4 is controlled by controlling the parallelism of the first mounting plate 5 and the second mounting plate 11 to ensure the parallelism of the metal end frame 4;

[0047] 3. The present invention uses a loading platform 8 to push the loading plate 7 to slide along the loading guide rail 2 to load and bond the metal end frame 4 and the pressure-resistant shell. The adhesive is a non-Newtonian fluid. During the bonding process, as the bonding surfaces of the shell and the metal end frame 4 gradually overlap, the adhesive on the bonding surface is compressed and slowly squeezed out from the inside to the outside. At this time, the loading plate 7 can provide continuous load supplementation to avoid stress concentration, local glue shortage, sealing failure and other problems when the pressure-resistant shell and the metal end frame 4 are bonded, and the coaxiality of the pressure-resistant shell and the metal end frame 4 after bonding is ensured. The thickness of the adhesive layer on the bonding surface of the composite material pressure-resistant shell and the metal end frame 4 and the uniformity of the adhesive layer are well controlled, thereby improving the safety and reliability of the product, reducing the stress concentration and sealing failure caused by bonding failure, and significantly improving the reliability of the product during service.

[0048] 4. The present invention is provided with an angle sensor 6 on the first mounting plate 5 and the second mounting plate 11. The angle sensor 6 can send angle data to the controller. The controller controls the first rotating mechanism 12 and the second rotating mechanism 13 to respectively rotate the first mounting plate 5 and the second mounting plate 11 so that the angles of the two metal end frames 4 remain consistent.

[0049] like Figure 5 As shown, the adjustment bracket 3 includes an adjustment base 301, and a plurality of horizontal guide rails 302 are arranged at intervals above the adjustment base 301, and each horizontal guide rail 302 is arranged perpendicular to the loading guide rail 2; two support seats 303 are slidably installed above each horizontal guide rail 302, and support wheels 304 for supporting the pressure-resistant shell are rotatably installed above the two support seats 303, and the axes of the two support wheels 304 are parallel to the axis of the pressure-resistant shell.

[0050] The distance between the two support seats 303 installed on the same horizontal guide rail 302 used in the present invention is smaller than the diameter of the pressure-resistant shell, and the support seats 303 on each horizontal guide rail 302 can be manually controlled and adjusted or automatically adjusted. During automatic adjustment, the support seats 303 on each horizontal guide rail 302 are adjusted accordingly; by adjusting the distance between the two support seats 303 installed on the same horizontal guide rail 302, the installation height of the pressure-resistant shell can be adjusted, and by adjusting the distance between the two support seats 303 installed on the same horizontal guide rail 302 and the two ends of the horizontal guide rail 302 to be consistent, it can be ensured that the axis of the pressure-resistant shell is consistent with the axis of the first mounting plate 5 and the second mounting plate 11.

[0051] In this embodiment, the accuracy of the loading guide rail 2 is less than 0.02 mm / m, the parallelism between the first mounting plate 5 and the second mounting plate 11 is less than 0.05, and the power of the loading platform 8 is hydraulic loading.

[0052] In the present invention, the loading platform 8 is a hydraulic cylinder, one end of which is connected to one side of the loading plate 7. When the output piston moves linearly outward, the loading plate 7 can be pushed to move linearly along the loading guide rail 2 toward one side of the fixed vertical plate 10, thereby applying pressure to the pressure-resistant shell and the metal end frame 4, and bonding the pressure-resistant shell and the metal end frame 4 tightly. After the adhesive is cured and the metal end frame 4 is removed from the first mounting plate 5 and the second mounting plate 11, the loading platform 8 drives the output piston to move linearly inward, pulling the loading plate 7 to move linearly along the loading guide rail 2 toward the side away from the fixed vertical plate 10, thereby loosening the pressure-resistant shell and the metal end frame 4.

[0053] like Figure 3 As shown, two angle sensors 6 are respectively installed on the relative outer sides of the first mounting plate 5 and the second mounting plate 11. The connecting line of the two angle sensors 6 on the first mounting plate 5 passes through the center of the first mounting plate 5, and the connecting line of the two angle sensors 6 on the second mounting plate 11 passes through the center of the second mounting plate 11.

[0054] In the present invention, the angles of the two angle sensors can be obtained by installing two angle sensors 6 diagonally on the mounting plate, and the angles of the mounting plates can be controlled to be consistent through the controller; and a plurality of pin holes are evenly distributed circumferentially on the metal end frame 4, and a plurality of pin holes are correspondingly provided on the mounting plate, so the angles of the two metal end frames 4 can be made consistent by controlling the angles of each mounting plate; when the angles of the pressure-resistant shell and the metal end frame 4 also need to be aligned, the pressure-resistant shell needs to be manually placed above the adjustment bracket 3 at a specific angle, and then the first rotating mechanism 12 and the second rotating mechanism 13 are controlled to rotate the first mounting plate 5 and the second mounting plate 11 to specific angles respectively, so that the angles of the pressure-resistant shell and the metal end frame 4 can be made to correspond.

[0055] In this embodiment, the first mounting plate 5, the second mounting plate 11 and the metal end frame 4 are positioned by pins 9 and detachably connected by bolts.

[0056] In this embodiment, the accuracy of each angle sensor 6 is less than 1'.

[0057] like Figure 2 As shown, the present invention also provides a composite material pressure hull metal end frame bonding method based on the composite material pressure hull metal end frame bonding tool, comprising the following steps:

[0058] Place the pressure-resistant shell to be installed on the adjusting bracket 3, and adjust the adjusting bracket 3 so that the axis of the pressure-resistant shell coincides with the axis of the first mounting plate 5 and the axis of the second mounting plate 11;

[0059] The two metal end frames 4 are respectively mounted on the opposite inner sides of the first mounting plate 5 and the second mounting plate 11;

[0060] The angle data of the first mounting plate 5 and the second mounting plate 11 are obtained by the angle sensor 6 and transmitted to the comparison module, the comparison module compares the angle data of the first mounting plate 5 and the second mounting plate 11 and sends the comparison result to the controller, and the controller controls the first rotating mechanism 12 and the second rotating mechanism 13 to rotate the first mounting plate 5 and the second mounting plate 11 respectively so that the angles of the first mounting plate 5 and the second mounting plate 11 are consistent;

[0061] Applying adhesive to the bonding surfaces of the two ends of the pressure-resistant shell and the two metal end frames 4;

[0062] The loading platform 8 pushes the loading plate 7 to move along the loading guide rail 2 toward the fixed vertical plate 10 until the load applied by the loading platform 8 to the loading plate 7 reaches a set value, and then the load is maintained;

[0063] After the adhesive is cured, the loading plate 7 is reset, and the metal end frame 4 is removed from the sides of the first mounting plate 5 and the second mounting plate 11 to obtain a composite pressure-resistant shell with metal end frames.

[0064] 1. The present invention provides a method for bonding metal end frames of composite pressure-resistant shells, focusing on solving the problems of coaxiality, radial angle deviation, parallelism, adhesive layer thickness and uniformity encountered in the bonding process of the metal end frames of composite pressure-resistant shells. By accurately positioning and connecting the tooling and the metal end frames 4, the composite pressure-resistant shells can have high-precision end frame parallelism and low radial angle deviation after bonding. The method can be applied to various types of products that require bonding of metal end frames 4, such as special-shaped antenna covers and composite engines, and can be widely used in the fields of aerospace, weapons and ships.

[0065] 2. The present invention sets screw holes and pin holes matching the metal end frame 4 on the side of each mounting plate, and then uses the pins 9 and bolts to position and install the metal end frame 4 on the side of the mounting plate. The metal end frame 4 is controlled by controlling the parallelism of the first mounting plate 5 and the second mounting plate 11 to ensure the parallelism of the metal end frame 4;

[0066] 3. The present invention uses a loading platform 8 to push the loading plate 7 to slide along the loading guide rail 2 to load and bond the metal end frame 4 and the pressure-resistant shell. The adhesive is a non-Newtonian fluid. During the bonding process, as the bonding surfaces of the shell and the metal end frame 4 gradually overlap, the adhesive on the bonding surface is compressed and slowly squeezed out from the inside to the outside. At this time, the loading plate 7 can provide continuous load supplementation to avoid stress concentration, local glue shortage, sealing failure and other problems when the pressure-resistant shell and the metal end frame 4 are bonded, and the coaxiality of the pressure-resistant shell and the metal end frame 4 after bonding is ensured. The thickness of the adhesive layer on the bonding surface of the composite material pressure-resistant shell and the metal end frame 4 and the uniformity of the adhesive layer are well controlled, thereby improving the safety and reliability of the product, reducing the stress concentration and sealing failure caused by bonding failure, and significantly improving the reliability of the product during service.

[0067] 4. The present invention is provided with an angle sensor 6 on the first mounting plate 5 and the second mounting plate 11. The angle sensor 6 can send angle data to the controller. The controller controls the first rotating mechanism 12 and the second rotating mechanism 13 to respectively rotate the first mounting plate 5 and the second mounting plate 11 so that the angles of the two metal end frames 4 remain consistent.

[0068] In this embodiment, before installing the metal end frame 4, the bonding surface of the metal end frame 4 is sandblasted; before installing the pressure-resistant shell, the bonding surface of the pressure-resistant shell is polished with sandpaper.

[0069] In this embodiment, when installing the metal end frame 4, the metal end frame 4 and the first mounting plate 5 and the second mounting plate 11 are first positioned using pins, and then the metal end frame 4 and the first mounting plate 5 and the second mounting plate 11 are respectively locked using screws.

[0070] In this embodiment, for adhesives that require high-temperature curing, connecting screw holes can be opened on the sides of the first mounting plate 5 and the second mounting plate 11, and the first mounting plate 5 and the second mounting plate 11 are connected using screws. After the adhesive is pre-cured, the first mounting plate 5 and the second mounting plate 11 are removed from the bonding tooling of the metal end frame of the composite pressure-resistant shell and placed in a curing furnace for high-temperature curing.

[0071] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A bonding tool for metal end frames of composite pressure-resistant shells, characterized in that: It comprises a base (1), with a loading guide rail (2) being arranged along the length of the top of the base (1); A fixed vertical plate (10) and a loading plate (7) are provided above the base (1) at intervals, wherein the fixed vertical plate (10) is fixedly connected to the base (1), the loading plate (7) is slidably connected to the loading guide rail (2), and one side of the loading plate (7) is connected to the loading platform (8); the loading platform (8) is fixed above the base (1) and is used to push the loading plate (7) to slide along the loading guide rail (2); A first mounting plate (5) and a second mounting plate (11) are provided between the fixed vertical plate (10) and the loading plate (7); the first mounting plate (5) is used for coaxially mounting the metal end frame (4), and the second mounting plate (11) is used for coaxially mounting the metal end frame (4); the first mounting plate (5) is rotatably connected to the fixed vertical plate (10) via a first rotating mechanism (12), and the second mounting plate (11) is rotatably connected to the loading plate (7) via a second rotating mechanism (13); angle sensors (6) are mounted on both the first mounting plate (5) and the second mounting plate (11); It also includes a controller and a comparison module, the comparison module being used to receive angle data of the first mounting plate (5) and the second mounting plate (11) sent from the angle sensor (6), compare the angle data with the set value, and send the comparison result to the controller; the controller being used to receive information from the comparison module and control the first rotating mechanism (12) and the second rotating mechanism (13) to rotate respectively according to the comparison result, so that the angles of the first mounting plate (5) and the second mounting plate (11) are consistent; A plurality of adjustment brackets (3) are installed at intervals along the length direction above the loading guide rail (2) and are used to place the pressure-resistant shell and adjust the axis of the pressure-resistant shell to coincide with the axis of the first mounting plate (5) and the second mounting plate (11).

2. The metal end frame bonding tool for composite pressure hull according to claim 1, characterized in that: The adjustment bracket (3) comprises an adjustment base (301), and a plurality of horizontal guide rails (302) are arranged at intervals above the adjustment base (301), and each horizontal guide rail (302) is arranged perpendicular to the loading guide rail (2); two support seats (303) are slidably mounted above each horizontal guide rail (302), and support wheels (304) for supporting the pressure-resistant shell are rotatably mounted above the two support seats (303), and the axes of the two support wheels (304) are parallel to the axis of the pressure-resistant shell.

3. The metal end frame bonding tool for composite pressure hull according to claim 2 is characterized in that: The accuracy of the loading guide rail (2) is less than 0.02 mm / m, the parallelism between the first mounting plate (5) and the second mounting plate (11) is less than 0.05, and the power of the loading platform (8) is hydraulic loading.

4. The metal end frame bonding tool for composite pressure hull according to claim 3 is characterized in that: Two angle sensors (6) are respectively mounted on the back surfaces of the first mounting plate (5) and the second mounting plate (11) facing each other; a connecting line of the two angle sensors (6) on the first mounting plate (5) passes through the center of the first mounting plate (5), and a connecting line of the two angle sensors (6) on the second mounting plate (11) passes through the center of the second mounting plate (11).

5. The metal end frame bonding tool for composite pressure hull according to claim 4, characterized in that: The first mounting plate (5) and the metal end frame (4) are positioned by pins (9) and detachably connected by bolts, and the second mounting plate (11) and the metal end frame (4) are positioned by pins (9) and detachably connected by bolts.

6. The metal end frame bonding tool for composite pressure hull according to claim 5, characterized in that: The accuracy of each angle sensor (6) is less than 1'.

7. A method for bonding a metal end frame of a composite pressure hull based on the bonding tool for the metal end frame of the composite pressure hull according to any one of claims 1 to 6, characterized in that: The steps include: Placing the pressure-resistant casing to be installed above the adjustment bracket (3), and adjusting the adjustment bracket (3) so that the axis of the pressure-resistant casing coincides with the axes of the first mounting plate (5) and the second mounting plate (11); The two metal end frames (4) are respectively mounted on opposite surfaces of the first mounting plate (5) and the second mounting plate (11); Angle data of the first mounting plate (5) and the second mounting plate (11) are obtained through an angle sensor (6) and transmitted to a comparison module, the comparison module compares the angle data of the first mounting plate (5) and the second mounting plate (11) and transmits the comparison result to a controller, and the controller controls the first rotating mechanism (12) and the second rotating mechanism (13) to rotate the first mounting plate (5) and the second mounting plate (11) respectively so that the angles of the first mounting plate (5) and the second mounting plate (11) are consistent; Applying adhesive to the bonding surfaces of the two ends of the pressure-resistant shell and the two metal end frames (4); The loading platform (8) pushes the loading plate (7) to move along the loading guide rail (2) toward the side of the fixed vertical plate (10) until the load applied by the loading platform (8) to the loading plate (7) reaches a set value, and then the load is maintained; After the adhesive is cured, the metal end frame (4) is removed from the sides of the first mounting plate (5) and the second mounting plate (11), and the loading plate (7) is reset to obtain a composite material pressure-resistant shell with a metal end frame.

8. The method for bonding metal end frames of composite pressure hulls according to claim 7, characterized in that: Before installing the metal end frame (4), the bonding surface of the metal end frame (4) is sandblasted; before installing the pressure-resistant shell, the bonding surface of the pressure-resistant shell is polished with sandpaper.

9. The method for bonding metal end frames of composite pressure hulls according to claim 8, characterized in that: When installing the metal end frame (4), firstly, the metal end frame (4) and the first mounting plate (5) and the metal end frame (4) and the second mounting plate (11) are positioned respectively using pins, and then the metal end frame (4) and the first mounting plate (5) and the metal end frame (4) and the second mounting plate (11) are locked respectively using screws.

10. The method for bonding metal end frames of composite pressure hulls according to claim 9, characterized in that: For adhesives that require high-temperature curing, connecting screw holes are provided on the sides of the first mounting plate (5) and the second mounting plate (11), and the first mounting plate (5) and the second mounting plate (11) are connected using screws. After the adhesive is pre-cured, the first mounting plate (5) and the second mounting plate (11) are removed from the composite material pressure hull metal end frame bonding tooling, and the first mounting plate (5), the metal end frame (4), the pressure hull, and the second mounting plate (11) are placed in a curing furnace for high-temperature curing.

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