A cylindrical pressure-resistant shell lined with metal ring rib composite material and its processing device and processing method

Abstract

The present invention discloses a composite cylindrical pressure-resistant shell lined with metal ring ribs, comprising a composite cylindrical shell and a plurality of metal ring ribs. The processing device of the cylindrical pressure-resistant shell comprises a heating device, a bracket, a driving device, a detachable metal mold and an aluminum film. The detachable metal mold is arranged between two metal ring ribs. The outer wall surface of the detachable metal mold, the metal ring ribs and the aluminum film forms a cylindrical outer wall. The heating device is used to heat the cylindrical outer wall after the composite material layer is arranged. The detachable metal mold comprises a plurality of alternatingly arranged first mold plates and second mold plates. The driving device drives the detachable metal mold to shrink, separate from the metal ring ribs, and detach from the composite cylindrical shell. The composite cylindrical shell is reinforced with an inner lining of metal ring ribs, which can improve the brittle defects of the material and greatly increase the ultimate load. The processing device can accurately and flexibly support the detachable metal mold. It can be demoulded immediately after being assembled, thereby improving processing efficiency.

Description

Technical Field

[0001] The present invention relates to pressure-resistant equipment, in particular to a cylindrical pressure-resistant shell lined with metal ring rib composite materials and a processing device and method thereof. Background Art

[0002] Composite cylindrical pressure hulls have good specific strength, specific stiffness, fatigue resistance, and corrosion resistance, and are widely used in aerospace, automobile manufacturing, shipbuilding, and submersible design. Especially in the field of navigation, due to their stable chemical properties, they can work stably in seawater for a long time without being corroded. Therefore, they are used in the design of submersible pressure chambers. For example, the patent application with application number 201910248204.X in the prior art proposes a carbon fiber composite deep-diving pressure chamber that can meet the requirements of low displacement / displacement ratio, high pressure-bearing strength and stability, and solves the problems of weak interlayer strength and easy delamination of laminated composite materials under pressure. Although carbon fiber composites have excellent mechanical properties, they are still brittle materials. This reinforced structure still cannot change the plasticity of the material and is prone to collapse when subjected to concentrated stress loads. Once the load exceeds its limit load, the structure will fail instantly. Summary of the Invention

[0003] Purpose of the invention: In view of the above shortcomings, the present invention provides a cylindrical pressure-resistant shell made of a composite material with a metal ring rib lining, which improves the brittle defects of the material and increases the ultimate load.

[0004] The present invention also provides a processing device and a processing method for the above-mentioned cylindrical pressure-resistant shell lined with metal ring rib composite material.

[0005] Technical solution: To solve the above problems, the present invention adopts a composite cylindrical pressure-resistant shell lined with metal ring ribs, including a composite cylindrical outer shell, wherein a plurality of metal ring ribs are provided on the inner wall of the composite cylindrical outer shell, and the metal ring ribs are in close contact with the composite cylindrical outer shell.

[0006] Furthermore, two metal ring ribs are provided on the inner wall of the composite cylindrical shell.

[0007] A processing device for a composite cylindrical pressure-resistant shell lined with metal ring ribs, comprising a heating device, a bracket, a driving device and a metal mold, wherein the metal mold comprises a separable metal mold and an aluminum film, wherein the separable metal mold is arranged between two metal ring ribs, and an aluminum film is provided on one end of the two metal ring ribs away from the separable metal mold, the separable metal mold, the metal ring ribs and the aluminum film are positioned by the bracket, and the outer wall surfaces of the separable metal mold, the metal ring ribs and the aluminum film form a cylindrical outer wall, the heating device is used to heat the cylindrical outer wall after a composite material layer is provided to form a composite material cylindrical shell, the separable metal mold comprises a plurality of alternatingly arranged first mold plates and second mold plates, and the driving device drives the first mold plates and the second mold plates to contract, separate from the metal ring ribs, and detach from the composite material cylindrical shell.

[0008] Furthermore, the driving device includes a first driving unit, a second driving unit and a screw coupling device. The first mold plate and the second mold plate are hinged to the screw coupling device through a connecting rod. The first driving unit drives the first mold plate to contract, and the second driving unit drives the second mold plate to contract. The first driving unit and the second driving unit are started in sequence at an staggered manner.

[0009] Furthermore, the first driving unit includes a first driving motor, a first screw and a first screw nut, the first driving motor is arranged on the bracket, one end of the first screw is fixedly connected to the first driving motor, and the other end of the first screw is fixedly connected to the screw coupling device, the first screw nut is arranged on the first screw, and is hinged to the connecting rod connected to the first mold plate through the driving rod, the first driving motor rotates to drive the first screw to rotate, and the first screw drives the first screw nut to move, thereby driving the first mold plate closer to or away from the first screw; the second driving unit includes a second driving motor, a second screw and a second screw nut, the second driving motor is arranged on the bracket, one end of the second screw is fixedly connected to the second driving motor, and the other end of the second screw is fixedly connected to the screw coupling device, the second screw nut is arranged on the second screw, and is hinged to the connecting rod connected to the second mold plate through the driving rod, the second driving motor rotates to drive the second screw to rotate, and the second screw drives the second screw nut to move, thereby driving the second mold plate closer to or away from the second screw; the extension directions of the first screw and the second screw are on the same straight line, and they rotate relatively independently. When the first mold plate and the second mold plate are contracted or expanded at the same time, the first screw nut and the second screw nut move in the same direction.

[0010] Furthermore, the contact surface between the first mold plate and the second mold plate is provided with a corresponding stepped stop, the stepped stop on both sides of the first mold plate are located on the outside, and the stepped stop on both sides of the second mold plate are located on the inside, the first drive unit starts before the second drive unit, and the first drive unit and the second drive unit stop at the same time.

[0011] Furthermore, when the first mold plate and the second mold plate shrink, they move toward the first end of the composite cylindrical shell. The longitudinal section of the metal ring rib near the first end of the composite cylindrical shell is trapezoidal, and the trapezoidal bottom surface on the outer side of the metal ring rib longitudinal section is longer than the trapezoidal bottom surface on the inner side. The longitudinal sections of the first mold plate and the second mold plate are right-angled trapezoids, and the hypotenuse of the right-angled trapezoid matches the hypotenuse of the trapezoid of the metal ring rib longitudinal section.

[0012] The present invention also adopts a method for processing a cylindrical pressure hull lined with metal ring rib composite material, comprising the following steps:

[0013] (1) Assemble the processing device and place the driving device, metal mold and metal ring rib on the bracket;

[0014] (2) The driving device drives the separate metal mold to expand, and the outer wall of the separate metal mold, the metal ring rib, and the aluminum film forms a cylindrical outer wall;

[0015] (3) Wrapping the composite material around the cylindrical outer wall;

[0016] (4) heating and molding the composite material to form a composite cylindrical shell;

[0017] (5) The driving device drives the separate metal mold to retract, so that the separate metal mold is separated from the composite cylindrical shell;

[0018] (6) Release the support constraint and separate the aluminum film from the composite cylindrical shell to obtain a composite cylindrical pressure-resistant shell lined with metal ring ribs.

[0019] The composite material is heated and formed in a heating chamber, and the electronic components are removed before heating. After heating to the target temperature and keeping warm for a period of time, it is taken out of the heating chamber, air-cooled to room temperature, and then the electronic components are reinstalled and connected.

[0020] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0021] 1. The composite column shell is reinforced with inner lining metal ring ribs, which can improve the brittle defects of the material and greatly increase the ultimate load. In addition, the inner lining metal ring ribs are also beneficial to the layout of the equipment.

[0022] 2. The processing device uses a combination of two sets of connecting rods and a zoom structure to accurately and flexibly support the detachable metal mold. After the composite material processing is completed, the mold can be immediately removed, which greatly shortens the processing time and improves the processing efficiency.

[0023] 3. The mechanical limit structure of the stopper is adopted to fully ensure the sealing of the column shell mold; the detachable metal mold relies on the internal connecting rod scaling structure to perform radial movement. The connecting rod scaling structure is combined with two screws and two deep groove ball bearings. Combined with the connecting rod with a "parallelogram structure", it can achieve free scaling and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the cylindrical pressure-resistant shell lined with metal ring rib composite materials of the present invention.

[0025] Figure 2 It is a schematic diagram of the overall structure of the cylindrical pressure-resistant shell of the present invention lined with metal ring rib composite material arranged on a processing device.

[0026] Figure 3 It is a top view of the processing device in the present invention.

[0027] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle.

[0028] Figure 5 yes Figure 3 Cross-sectional view at the middle BB.

[0029] Figure 6 This is a left view of the separate metal mold and aluminum mold in the present invention located in the composite material cylindrical shell.

[0030] Figure 7 It is a cross-sectional view of the separate metal mold and aluminum mold in the present invention located in the composite material cylindrical shell.

[0031] Figure 8 It is a schematic diagram of the two groups of connecting rod structures of the driving device in the present invention.

[0032] Figure 9 It is a schematic diagram of the screw rod joint device in the present invention.

[0033] Figure 10 It is a schematic diagram of the connecting rod moving device in the present invention.

[0034] Figure 11 It is a structural schematic diagram of the connection between the first driving unit and a first mold plate in the present invention.

[0035] Figure 12 It is a structural schematic diagram of the present invention in which the first drive unit and the second drive unit are respectively connected to a first mold plate and a second mold plate.

[0036] Figure 13 It is a structural schematic diagram of the first mold plate in the present invention.

[0037] Figure 14It is a schematic diagram of the connection structure of the connecting rod and the separable mold piece in the present invention.

[0038] Figure 15 It is a partial schematic diagram of the split metal mold of the present invention when it is unfolded.

[0039] Figure 16 It is a partial schematic diagram of the split metal mold of the present invention when it shrinks.

[0040] Figure 17 It is a schematic diagram of the position of the separate mold piece at different moments during the shrinkage process of the separate mold in the present invention.

[0041] Figure 18 This is a schematic diagram of the electrical control principle for processing a composite cylindrical pressure-resistant shell lined with metal ring ribs in the present invention.

[0042] Figure 19 It is a flow chart of the processing method in the present invention. DETAILED DESCRIPTION

[0043] Example 1

[0044] like Figure 1 As shown, in this embodiment, a composite cylindrical pressure hull lined with metal ring ribs includes a composite cylindrical outer shell 5. Several metal ring ribs are provided on the inner wall of the composite cylindrical outer shell, and the metal ring ribs are in close contact with the composite cylindrical outer shell 5. In this embodiment, two metal ring ribs are provided, and the interior of the composite cylindrical shell is reinforced by the metal ring ribs. The combination of composite and metal materials can improve the performance of the cylindrical shell in various aspects.

[0045] Example 2

[0046] like Figures 2 to 7 As shown in the figure, in this embodiment, a processing apparatus for a composite cylindrical pressure hull lined with metal ring ribs is provided. The apparatus primarily comprises a metal mold support frame (bracket) 1, a heating device, a drive device, and a metal mold. The metal mold comprises a separate metal mold 6 and an aluminum film 4. The metal mold support frame 1 supports the metal ring ribs and aluminum mold and secures the drive device.

[0047] The split metal mold is positioned between two metal ring ribs. Aluminum film 4 is positioned at the ends of both metal ring ribs facing away from the split metal mold. The split metal mold 6, metal ring ribs, and aluminum film 4 are positioned by a metal mold support frame. The outer wall of the split metal mold 6, metal ring ribs, and aluminum film 4 forms a cylindrical outer wall. A heating device is used to heat the cylindrical outer wall after the composite material layer is applied, forming a composite cylindrical shell. The split metal mold 6 comprises a plurality of alternating first and second mold plates 61, 62. A drive device drives each of the first and second mold plates 61, 62 to contract, separating them from the metal ring ribs and detaching them from the composite cylindrical shell 5. The metal ring ribs, the end aluminum molds, and the split metal mold sheet collectively support the processing of the composite material layer. The metal mold support frames on both sides support the mold while securing the internal screw coupling device to prevent axial movement.

[0048] The composite cylindrical shell and the metal ring ribs fit perfectly together, with the two center metal ring ribs having slightly different cross-sections. To eliminate interference between the composite motion generated during contraction of the split metal mold and the metal ring ribs, the metal ring rib I 14 on one side of the split metal mold's movement direction is designed with a trapezoidal cross-section, while the metal ring rib II 15 on the other side retains a traditional rectangular cross-section. The cross-section of the split metal mold matches that of the metal ring ribs.

[0049] like Figure 8 As shown, the driving device includes a first driving unit, a second driving unit and a screw coupling device 11. The first mold plate 61 and the second mold plate 62 are both hinged to the screw coupling device 11 through a connecting rod 7. The first driving unit drives the first mold plate to contract, and the second driving unit drives the second mold plate to contract. The first driving unit and the second driving unit are started in sequence at an staggered manner.

[0050] The first drive unit includes a first drive motor 2, a first screw rod 9 and a first screw rod nut 13. The first drive motor is arranged on a bracket. One end of the first screw rod 9 is fixedly connected to the first drive motor, and the other end of the first screw rod is fixedly connected to the screw rod coupling device. The first screw rod nut is arranged on the first screw rod and is hinged to the connecting rod connected to the first mold plate through the drive rod. The rotation of the first drive motor drives the first screw rod to rotate, and the rotation of the first screw rod drives the first screw rod nut to move, thereby driving the first mold plate to move closer to or away from the first screw rod; the second drive unit includes a second drive motor 16 , the second screw 17 and the second screw nut 18, the second drive motor is arranged on the bracket 1, one end of the second screw is fixedly connected to the second drive motor, the other end of the second screw is fixedly connected to the screw coupling device, the second screw nut is arranged on the second screw, and is hinged to the connecting rod 7 connected to the second mold plate through the drive rod 8. The rotation of the second drive motor drives the second screw to rotate, and the rotation of the second screw drives the second screw nut to move, thereby driving the second mold plate closer to or away from the second screw; the extension direction of the first screw and the second screw are located on the same straight line, and rotate relatively independently. When the first mold plate and the second mold plate are retracted or expanded at the same time, the movement direction of the first screw nut and the second screw nut is the same. The two sets of internal connecting rod scaling structures can achieve movement in the same direction through the rotation of the stepper motor shafts on both sides. The two stepper motors are started separately within a time difference of 3s, which can achieve the time difference of scaling of the two sets of separate metal molds, making the scaling of the separate metal mold more flexible.

[0051] like Figure 9 and Figure 10 As shown, the two rolling bearings 10 inside the screw coupling device 11 are respectively interference-connected with the inner hole, so that the two screws can rotate independently without interfering with each other; and the connecting rod moving device 3 cooperates with the screw through the screw nut to convert the rotation generated by the stepper motor into the movement of the connecting rod moving device, and cooperates with the two sets of connecting rod scaling structures to realize the scaling of the split metal mold.

[0052] like Figures 11 to 13 As shown, the contact surface between the first mold plate 61 and the second mold plate 62 is provided with a matching stepped stop, the stepped stop on both sides of the first mold plate are located on the outside, and the stepped stop on both sides of the second mold plate are located on the inside, and the separate metal mold sheets are tightly fitted with each other by relying on the stepped mechanical structure. This structure is also conducive to the full opening of the separate metal mold sheets. The first drive unit starts before the second drive unit, and the first drive unit and the second drive unit stop at the same time.

[0053] like Figure 14 As shown, the connecting rod and the separate metal mold piece are connected by locking screws, which makes the rotation more flexible, reduces friction, and makes the connection between the connecting rod and the separate metal mold piece more firm and has a longer service life.

[0054] Figures 15 to 17 The movement of the split metal mold is shown, including its expansion during composite winding and its contraction after cooling. The split metal mold's movement is not a single axial or radial motion, but a composite of these two. This demonstrates the importance of the angled design between the right-hand slope of the split metal mold and the right-hand trapezoidal metal ring rib.

[0055] like Figure 18 As shown, the control of the drive motor is to close the circuit breaker QF switch, set the KT time relay delay ts, and the KT1 and KT2 time relays are delayed respectively. s. Press the SB2 start switch, the KM1 coil is energized, the KM1 main contact closes (main circuit on the left), the KM1 normally open auxiliary contact closes, forming a self-locking, the motor M1 starts, the KT and KT1 coils are also energized, ts later the KT delayed closing switch is disconnected, the KM2 coil is energized, the KM2 main contact closes, the KM2 normally open auxiliary contact closes, and the motor M2 starts. After s, the KT1 switch is disconnected, the KM1 coil is de-energized, and the motor M1 stops; ( After 1s, KT2 switch opens, KM2 coil is de-energized, and motor M2 stops. The entire control process ends, and SB2 becomes the emergency stop switch.

[0056] This embodiment utilizes a split metal mold structure to complete composite material processing. This reduces the mold's mass and structure after processing, ensuring machining accuracy without compromising the composite material's strength and toughness. This results in a lightweight design for the finished product, lowering production costs and reducing energy consumption. The entire device can be disassembled at the coupling, allowing the stepper motor to be removed during the composite material heating process, extending the life of the electronic components while ensuring process safety.

[0057] Example 3

[0058] like Figure 19 As shown, in this embodiment, a method for processing a cylindrical pressure hull lined with metal ring rib composite material includes the following steps:

[0059] Step 1: Assemble various components, including internal moving parts, metal molds (aluminum molds and separate metal molds), stepper motors, metal support frames, and metal ring ribs. At the same time, ensure that the metal support frame accurately supports the metal ring ribs and the aluminum mold, and fix the internal screw coupling device; set the screw and its connecting parts to the initial value and connect them to the stepper motor through the coupling; fix the stepper motor to the support frame and debug its operation.

[0060] Step 2: After the mechanical and electronic components are assembled, the stepper motor is controlled to transmit the movement of the stepper motor shaft to the connecting rod moving platform through the lead screw, so that the split metal mold is fully opened for the winding of the composite material.

[0061] Step 3: After ensuring that the separate metal mold is fully opened and the metal ring rib and the aluminum mold are fixed, the composite material is wound. The entire winding process ensures that the separate metal mold is always fully opened.

[0062] Step 4: To avoid damage to electronic components during heating and for safety reasons, the electronic components can be separated by disassembling the coupling after the composite material winding is completed.

[0063] Step 5: Place all structures except the electronic components into the heating chamber to heat and shape the composite material. When heated to the target temperature and kept warm for a period of time, take them out and air-cool them to room temperature before reinstalling and connecting the stepper motor.

[0064] Step 6: Control the stepper motors on both sides, the stepper motor speed n. When the right stepper motor is given an excitation, the stepper motor starts to rotate. After ts, the left stepper motor is turned on. A time difference is given to the two sets of different metal mold pieces, and the contraction of the separate metal mold can be achieved.

[0065] The load torque applied to the motor can be calculated using formula (1), where μ is the friction coefficient; W is the weight of the metal ring-ribbed composite cylindrical pressure-resistant shell (kg); P is the screw pitch (m); 1 / R is the reduction ratio; and η is the efficiency of the transmission coefficient. The distance the screw drives the connecting rod to move horizontally can be calculated using formula (2), where L is the distance the connecting rod moves horizontally (m); and K is the number of screw revolutions.

[0066] (1)

[0067] (2)

[0068] Formula (3) shows the relationship between the stepper motor's rotation time and number of revolutions, where N is the number of revolutions the stepper motor has completed (r); n is the number of revolutions per minute (r / min); and t is the stepper motor's rotation time. Because the stepper motor is connected to the lead screw 9 via coupling 12, the number of stepper motor revolutions equals the number of lead screw revolutions, i.e., K = N. This gives the relationship between the stepper motor's rotation time and the horizontal travel distance of the connecting rod, allowing the stepper motor's operating time to be designed accordingly.

[0069] (3)

[0070] Step 7: When the split metal mold shrinks to the set value, cut off the power supply of the stepper motor, remove the coupling, release the constraints of the support frame on either side, and axially remove the split mold and related structures from the other side.

[0071] Step 8: Separate the aluminum molds at both ends.

[0072] Step 9: Obtain a cylindrical pressure-resistant shell lined with metal ring rib composite materials.

[0073] Finally, the cylindrical pressure hull lined with metal ring ribs is complete. Compared to traditional composite material processing techniques, this method's greatest advantage lies in its lightweight structure. Without the need to disengage the intermediate metal ring rib mold, the separate metal mold allows for automated opening and retraction, resulting in more precise movements. The composite material product produced using this device maintains structural strength and toughness while reducing weight, making composite material processing more environmentally friendly and economical.

Claims

1. A processing device for a composite cylindrical pressure hull lined with metal ring ribs, which is used for processing a composite cylindrical pressure hull lined with metal ring ribs, wherein the composite cylindrical pressure hull lined with metal ring ribs comprises a composite cylindrical shell (5), wherein two metal ring ribs are provided on the inner wall of the composite cylindrical shell (5), and the metal ring ribs are in close contact with the composite cylindrical shell, and wherein the processing device is characterized in that: The invention comprises a heating device, a bracket (1), a driving device and a metal mold, wherein the metal mold comprises a separate metal mold (6) and an aluminum film (4), wherein the separate metal mold is arranged between two metal ring ribs, and the aluminum film (4) is arranged at one end of the two metal ring ribs away from the separate metal mold (6). The separate metal mold (6), the metal ring ribs and the aluminum film (4) are positioned by the bracket (1), and the outer wall surface of the separate metal mold (6), the metal ring ribs and the aluminum film (4) forms a cylindrical outer wall. The heating device is used for heating the cylindrical outer wall after the composite material layer is arranged to form a composite material cylindrical shell (5). The separate metal mold comprises a plurality of first mold plates and second mold plates arranged alternately, and the driving device drives the first mold plate (61) and the second mold plate (62) to shrink, separate from the metal ring ribs, and detach from the composite material cylindrical shell. The driving device comprises a first driving unit, a second driving unit and a screw coupling device (11); the first mold plate (61) and the second mold plate (62) are both hinged to the screw coupling device (11) via a connecting rod; the first driving unit drives the first mold plate to contract; the second driving unit drives the second mold plate to contract; the first driving unit and the second driving unit are started in a staggered manner.

2. The processing device according to claim 1, characterized in that The first drive unit comprises a first drive motor (2), a first screw rod (9) and a first screw rod nut (13), wherein the first drive motor is arranged on the bracket (1), one end of the first screw rod (9) is fixedly connected to the first drive motor (2), and the other end of the first screw rod is fixedly connected to the screw rod coupling device (11), the first screw rod nut is arranged on the first screw rod and is hinged to the connecting rod (7) connected to the first mold plate through the drive rod, the first drive motor rotates to drive the first screw rod to rotate, and the first screw rod rotates to drive the first screw rod nut to move, thereby driving the first mold plate to move closer to or away from the first screw rod; the second drive unit comprises The second drive motor (16), the second screw rod (17) and the second screw rod nut (18) are provided on the bracket, one end of the second screw rod is fixedly connected to the second drive motor, and the other end of the second screw rod is fixedly connected to the screw rod coupling device (11). The second screw rod nut is provided on the second screw rod and is hinged to the connecting rod connected to the second mold plate through the driving rod. The rotation of the second drive motor drives the second screw rod to rotate, and the rotation of the second screw rod drives the second screw rod nut to move, thereby driving the second mold plate to move closer to or away from the second screw rod; the extension direction of the first screw rod and the second screw rod are located on the same straight line, and they rotate relatively independently.

3. The processing device according to claim 2, characterized in that When the first mold plate and the second mold plate are contracted or expanded at the same time, the first screw nut and the second screw nut move in the same direction.

4. The processing device according to claim 3, characterized in that The contact surface between the first mold plate (61) and the second mold plate (62) is provided with a matching stepped stop, the stepped stop on both sides of the first mold plate are located on the outside, and the stepped stop on both sides of the second mold plate are located on the inside, the first drive unit starts before the second drive unit, and the first drive unit and the second drive unit stop at the same time.

5. The processing device according to claim 3, characterized in that: When the first mold plate and the second mold plate shrink, they move toward the first end of the composite cylindrical shell. The longitudinal section of the metal ring rib near the first end of the composite cylindrical shell is trapezoidal, and the trapezoidal bottom surface on the outer side of the metal ring rib longitudinal section is longer than the trapezoidal bottom surface on the inner side. The longitudinal sections of the first mold plate and the second mold plate are right-angled trapezoids, and the hypotenuse of the right-angled trapezoid matches the hypotenuse of the trapezoid of the metal ring rib longitudinal section.

6. A processing method using the processing device according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) Assemble the processing device and place the driving device, metal mold and metal ring rib on the bracket; (2) The driving device drives the separate metal mold to expand, and the outer wall of the separate metal mold, the metal ring rib, and the aluminum film forms a cylindrical outer wall; (3) Wrapping the composite material around the cylindrical outer wall; (4) heating and molding the composite material to form a composite cylindrical shell; (5) The driving device drives the separate metal mold to retract, so that the separate metal mold is separated from the composite cylindrical shell; (6) Release the support constraint and separate the aluminum film from the composite cylindrical shell to obtain a composite cylindrical pressure-resistant shell lined with metal ring ribs.

7. The processing method according to claim 6, characterized in that: In the step (4), the composite material is heated and formed in a heating chamber, and the electronic device is removed before heating. After being heated to the target temperature and kept warm for a period of time, it is taken out of the heating chamber, air-cooled to room temperature, and then the electronic device is reinstalled and connected.

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