Processing device and method for composite columnar pressure-resistant case with inner metal annular rib

Abstract

The present invention discloses a composite columnar pressure case with a metal ring-shaped rib lining, which includes a composite columnar casing and a plurality of metal ring-shaped ribs. The processing device of the columnar pressure case includes a heating device, a bracket, a driving device, a split mold and an aluminum film, the split mold is installed between two metal ring-shaped ribs, and a columnar outer wall is formed on the outer wall surface of the split mold, the metal ring-shaped rib and the aluminum film, the heating device is used for heating the composite layer after it is installed on the columnar outer wall, the split mold includes a plurality of alternating first and second mold plates, and the driving device drives the first and second mold plates to contract, separate from the metal ring-shaped rib and separate from the composite columnar casing. The composite column case is reinforced with the metal ring-shaped rib lining, which can improve the brittle defects of the material and greatly increase the limit load. The processing device can support the split mold accurately and flexibly. It can be demolded quickly, which improves the processing efficiency.

Description

[Technical Field]

[0001] The present invention relates to a pressure-resistant device, and more particularly to a columnar pressure-resistant case made of a composite material and having an annular metal rib lining, and a processing device and processing method thereof. [Background technology]

[0002] Composite columnar pressure cases have excellent specific strength, specific stiffness, fatigue resistance, and corrosion resistance, making them widely used in aerospace, automobile manufacturing, ship and submarine design, and particularly in nautical applications, where their stable chemical properties allow for long-term operation in seawater without corrosion, making them suitable for submarine pressure chamber design. For example, the prior art patent application with application number 201910248204.X proposes a carbon fiber composite diver pressure chamber that offers a low displacement / displacement ratio, high pressure strength, and stability, while addressing the issues of weak interlaminar strength and the tendency for composite laminates to be easily compressed and laminated. While carbon fiber composites have excellent mechanical properties, they are brittle materials. Their reinforced structures cannot change their plasticity, making them susceptible to collapse under concentrated stress loads. When the load exceeds its critical load, the structure instantly fails. Summary of the Invention [Problem to be solved by the invention]

[0003] OBJECT OF THE INVENTION In response to the above drawbacks, the present invention provides a composite columnar pressure case with an inner metal annular rib that improves the brittleness of the material and increases the critical load. [Means for solving the problem]

[0004] The present invention further provides an apparatus and method for processing the above-mentioned columnar pressure-resistant case made of a composite material and having an annular metal lining rib.

[0005] Technical solution: To solve the above problems, the present invention provides a composite columnar pressure-resistant case with lining metal annular ribs, which includes a composite columnar casing, and a plurality of metal annular ribs are installed on the inner wall of the composite columnar casing, and the metal annular ribs are in close contact with the composite columnar casing.

[0006] Furthermore, two metal annular ribs are installed on the inner wall of the composite columnar casing.

[0007] an apparatus for processing a prismatic pressure-resistant composite casing having an inner lining metal annular rib, the apparatus comprising: a heating device, a bracket, a driving device, and a mold; the mold comprising a split mold and an aluminum film; the split mold being disposed between two annular metal ribs; aluminum films being disposed on the ends of the two annular metal ribs facing away from the split mold; the split mold, the annular metal rib, and the aluminum film being positioned by brackets; and a prismatic outer wall being formed on the outer surfaces of the split mold, the annular metal rib, and the aluminum film; the heating device being used to heat the composite material layer disposed on the prismatic outer wall to form the composite prismatic casing; the split mold comprising a plurality of alternating first and second mold plates; the driving device being used to drive the first and second mold plates to contract, separate from the annular metal rib, and release from the composite prismatic casing;

[0008] Further, the driving device includes a first driving unit, a second driving unit and a screw connecting device, the first mold plate and the second mold plate are both hinged to the screw connecting device via a link, the first driving unit drives the first mold plate to contract, the second driving unit drives the second mold plate to contract, and the first driving unit and the second driving unit are activated with a time lag.

[0009] Further, the first driving unit includes a first driving motor, a first screw, and a first screw nut, the first driving motor is mounted on a 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 a screw joint device, the first screw nut is mounted on the first screw and is hinged to a link connected to the first mold plate via a driving rod, the first driving motor rotates to rotate the first screw, and the first screw rotates to move the first screw nut, thereby moving the first mold plate closer to or away from the first screw, and the second driving unit is , a second screw and a second screw nut, the second drive motor is installed on a bracket, 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 a screw connecting device, the second screw nut is installed on the second screw and is hinged to a link connected to the second mold plate via a drive rod, the second drive motor rotates to rotate the second screw, the second screw rotates to move the second screw nut, thereby moving the second mold plate toward or away from the second screw, the first screw and the second screw extend in the same straight line and rotate relatively independently.

[0010] When the first and second mold plates are simultaneously contracted or expanded, the first and second screw nuts move in the same direction.

[0011] Furthermore, matching stepped locking holes are provided on the contact surfaces between the first and second mold plates, the stepped locking holes on both sides of the first mold plate are both located on the outside, and the stepped locking holes on both sides of the second mold plate are both located on the inside, the first driving unit is started before the second driving unit, and the first driving unit and the second driving unit are stopped simultaneously.

[0012] Furthermore, the first and second mold plates move to the first end of the composite columnar casing during contraction, and the longitudinal cross section of the metal annular rib near the first end of the composite columnar casing is trapezoidal, and the outer trapezoidal base of the longitudinal cross section of the metal annular rib is longer than the inner trapezoidal base, and the longitudinal cross sections of the first and second mold plates are right-angled trapezoids, and the oblique side of the right-angled trapezoid matches the oblique side of the trapezoid of the longitudinal cross section of the metal annular rib.

[0013] The present invention provides a method for manufacturing a columnar pressure-resistant case made of a composite material and having an annular metal rib lining, comprising the steps of: (1) Assembling the processing device, and installing the drive unit, the mold and the metal annular rib on the bracket; (2) driving the split mold so that the driving device expands, and the split mold, the metal annular rib, and the outer wall surface of the aluminum film form a columnar outer wall; (3) winding a composite material around the outer wall of the column; (4) hot forming the composite material to form a composite prismatic casing; (5) a step in which the driving device drives the split mold to contract, thereby realizing the split mold being separated from the composite material columnar casing; (6) A method for processing a composite material columnar pressure-resistant case having an inner lining metal annular rib is used, which includes the steps of: releasing the restriction of the bracket, detaching the aluminum film from the composite material columnar casing, and obtaining a composite material columnar pressure-resistant case having an inner lining metal annular rib.

[0014] The composite material is hot-molded in a heating chamber, and the electronic device is removed before heating, heated to a target temperature and kept warm for a while, then removed from the heating chamber, air-cooled to room temperature, and then reattached and connected to the electronic device. [Effects of the Invention]

[0015] The beneficial effects are as follows: Compared with the prior art, the notable advantages of the present invention are as follows:

[0016] 1. The composite column case is reinforced with an inner lining metal ring rib, which can improve the brittleness of the material and significantly increase the limit load. In addition, the inner lining metal ring rib is also advantageous for equipment layout.

[0017] 2. The processing device uses a combination of two sets of link telescopic structures, which can support the separable mold accurately and flexibly. After the composite material is processed, it can be demolded immediately, which greatly shortens the processing time and improves processing efficiency. 3. The mechanical limiting structure of the locking port is adopted to fully guarantee the sealing of the column case mold. The separable mold moves radially through the internal link expansion and contraction structure, which is combined with two screws and two deep groove ball bearings. The link with a "parallelogram structure" can be combined to achieve free expansion and contraction, improving manufacturing efficiency. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of the overall structure of a composite material columnar pressure-resistant case having an annular metal rib lining according to the present invention. [Figure 2] 1 is a schematic diagram of the overall structure of a composite material columnar pressure-resistant case having an annular metal rib lining according to the present invention, which is installed in a processing device. [Figure 3] FIG. 2 is a plan view of the processing device according to the present invention. [Figure 4] 4 is a cross-sectional view taken along the line AA in FIG. 3. [Figure 5] 4 is a cross-sectional view of FIG. 3 taken along line B-B. [Figure 6] FIG. 1 is a left side view of a split mold according to the present invention, in which an aluminum mold is positioned within a columnar casing made of a composite material. [Figure 7] FIG. 1 is a cross-sectional view of a split mold according to the present invention, in which an aluminum mold is positioned within a columnar casing made of a composite material. [Figure 8] 3 is a schematic diagram of two sets of link structures of the driving device in the present invention. FIG. [Figure 9] 1 is a schematic diagram of a screw fastening device according to the present invention. [Figure 10]1 is a schematic diagram of a link movement device according to the present invention. [Figure 11] FIG. 2 is a structural schematic diagram of a first driving unit connected to a first mold plate in the present invention. [Figure 12] 3 is a structural schematic diagram of the first and second driving units connected to the first and second mold plates, respectively, in the present invention; FIG. [Figure 13] FIG. 2 is a structural schematic diagram of a first mold plate in the present invention. [Figure 14] 1 is a schematic diagram of a connection structure between a link and a split mold seat in the present invention. FIG. [Figure 15] FIG. 2 is a schematic view of a part of a split mold according to the present invention when it is unfolded. [Figure 16] FIG. 2 is a schematic view of a part of the split mold according to the present invention during contraction. [Figure 17] 10A-10C are schematic diagrams illustrating the positions of the split mold seats at different times during shrinkage of the split mold in accordance with the present invention. [Figure 18] FIG. 1 is a diagram illustrating the principle of electrical control of machining a columnar pressure-resistant case made of a composite material and having an annular metal rib lining according to the present invention. [Figure 19] 1 is a flowchart of a processing method according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] Example 1 As shown in Figure 1, the composite columnar pressure casing with inner lining metal annular ribs in this embodiment includes a composite columnar casing 5, and a number of metal annular ribs 14 are installed on the inner wall of the composite columnar casing, and the metal annular ribs 14 are in close contact with the composite columnar casing 5. In this embodiment, two metal annular ribs 14 are installed, and the interior of the composite columnar casing is reinforced by the metal annular ribs. The combination of composite and metal materials can improve the performance of the columnar casing in all aspects.

[0020] Example 2 2 to 7, the processing equipment for the composite columnar pressure-resistant case with annular metal ribs in this embodiment mainly includes a mold support frame (bracket) 1, a heating device, a drive unit, and a mold. The mold includes a split mold 6 and an aluminum film 4, and the mold support frame 1 supports the annular metal ribs 14 and the aluminum mold and serves to fix the drive unit.

[0021] The split mold is installed between two annular metal ribs 14, and aluminum films 4 are installed on the ends of the two annular metal ribs facing away from the split mold. The split mold 6, annular metal ribs 15, and aluminum films 4 are positioned by a mold support frame, and a cylindrical outer wall is formed on the outer surfaces of the split mold 6, annular metal ribs 15, and aluminum films 4. A heating device is used to heat the cylindrical outer wall after a composite material layer is installed on it to form a composite prismatic casing. The split mold 6 includes a plurality of alternating first and second mold plates 61 and 62, and a driving device is used to drive the first and second mold plates 61 and 62, respectively, so that they contract and separate from the annular metal ribs 15 and then release from the composite prismatic casing 5. The annular metal ribs, end aluminum plates, and split mold sheets collectively support the processing of the composite layer. The mold support frames on both sides support the mold and fix the internal threaded connecting device to prevent axial movement.

[0022] The composite cylindrical casing and the metal annular rib are completely in contact with each other, but the cross sections of the two middle metal annular ribs are slightly different. To eliminate interference between the composite movement and the metal annular ribs when the split mold shrinks, the metal annular rib I14 on the side of the split mold movement direction is designed with a trapezoidal cross section, while the metal annular rib II15 on the other side uses a conventional rectangular cross section. The cross sections of the split mold and the metal annular ribs are compatible.

[0023] As shown in FIG. 8, the driving device includes a first driving unit, a second driving unit and a screw connecting device 11, a first mold plate 61 and a second mold plate 62 are both hinged to the screw connecting device 11 via a link 7, the first driving unit drives the first mold plate to contract, and the second driving unit drives the second mold plate to contract, and the first driving unit and the second driving unit are activated with a time lag.

[0024] The first drive unit includes a first drive motor 2, a first screw 9, and a first screw nut 13, and is mounted on a bracket. One end of the first screw 9 is fixedly connected to the first drive motor, and the other end of the first screw is fixedly connected to a screw joint device. The first screw nut is mounted on the first screw and hinged via a drive rod to a link connected to the first mold plate. The first drive motor rotates to rotate the first screw, and the first screw rotates to move the first screw nut, thereby moving the first mold plate toward or away from the first screw. The second drive unit includes a second drive motor 16, a second screw 17, and a and a second screw nut 18, the second drive motor being mounted on the bracket 1, one end of the second screw being fixedly connected to the second drive motor and the other end of the second screw being fixedly connected to the screw connecting device, the second screw nut being mounted on the second screw and hinged via a drive rod 8 to a link 7 connected to the second mold plate, the second drive motor rotating to rotate the second screw, the second screw rotating to move the second screw nut, thereby moving the second mold plate towards or away from the second screw, the first screw and the second screw extending in the same direction are located on a straight line and rotate independently relative to each other. When the first mold plate and the second mold plate are simultaneously contracted or expanded, the first screw nut and the second screw nut move in the same direction. The two sets of internal link extension / retraction structures can achieve movement in the same direction by rotating the stepper motor shafts on both sides, and the two stepper motors are started respectively within a time difference of 3 seconds, realizing a time difference in the extension / retraction of the two sets of split molds and making the split mold extension / retraction more flexible.

[0025] As shown in Figures 9 and 10, the two rolling bearings 10 inside the screw connection device 11 are each tightly fitted into the inner bore, allowing the two screws to rotate independently without interfering with each other. The link movement device 3 is a combination of a screw nut and a screw, which converts the rotation generated by the stepping motor into movement of the link movement device, thereby realizing the extension and retraction of the split mold in accordance with the two sets of link extension structures.

[0026] As shown in Figures 11 to 13, matching stepped locking holes are installed on the contact surface between the first mold plate 61 and the second mold plate 62, the stepped locking holes on both sides of the first mold plate are both located on the outside, and the stepped locking holes on both sides of the second mold plate are both located on the inside, and a stepped mechanical structure is used to achieve close contact between the split mold sheets, which is also advantageous for the split mold sheets to fully open, and the first driving unit is started before the second driving unit, and the first driving unit and the second driving unit are stopped simultaneously.

[0027] As shown in Figure 14, the link and the split mold seat are connected by a lock bolt, which allows for more flexible rotation and reduces friction, while also making the connection between the link and the split mold seat stronger and extending the service life.

[0028] 15 to 17 show the movement process of the split die, including the opening of the split die sheet during winding of the composite material and the contraction of the split die sheet after cooling. The movement of the split die sheet is not a single axial movement or a single radial movement, but a combined movement of these two split movements. This embodies the need to design the right slope of the split die sheet and the cross-sectional angle of the right trapezoidal metal annular rib.

[0029] As shown in Figure 18, this is the control for the drive motor. The circuit breaker QF switch is turned on, and the delay time ts of the KT time relays is set so that the KT1 and KT2 time relays each have a delay of t1s. The SB2 start switch is pressed, the KM1 coil is energized, and the KM1 main contact is closed (left main circuit). KM1 is normally on and assists in closing the contact, forming a self-lock. As the motor M1 starts, the KT and KT1 coils are energized. After ts, the KT time relay delays, and the closed switch is turned off. The KM2 coil is energized, and the KM2 main contact is closed. KM2 is normally on and assists in closing the contact, and the motor M2 starts. After t1s, the KT1 switch is turned off, the KM1 coil is de-energized, and the motor M1 stops. After (t1 + t)s, the KT2 switch is turned off, the KM2 coil is de-energized, and the motor M2 stops. The entire control process is completed, and SB2 is the emergency stop switch.

[0030] In this embodiment, a split mold structure is used to complete the processing of composite materials, and the mass and structure of the mold are reduced after processing is completed, ensuring processing precision without affecting the strength and toughness of the processed composite materials, achieving a lightweight design for the entire finished product, reducing production costs and energy consumption.The entire device can be detached by coupling, and the stepper motor can be removed during the heating processing of composite materials, extending the life of the electronic devices and ensuring the safety of the processing process.

[0031] Example 3 As shown in FIG. 19, the manufacturing method of the composite columnar pressure-resistant case having the inner lining metal annular rib in this embodiment includes the following steps.

[0032] Step 1: Assemble all parts including the internal moving part, mold (aluminum mold and split mold), stepper motor, metal support frame, and metal ring rib. Ensure that the metal support frame accurately supports the metal ring rib and aluminum mold, and fix the internal screw connection device. After setting the screws and their connecting parts to their initial values, connect them to the stepper motor via a coupling, fix the stepper motor to the support frame, and debug its operation.

[0033] Second step: After assembling the mechanical and electronic components, the stepper motor is controlled to transmit the motion of the stepper motor shaft to the link moving platform via a screw, thereby fully opening the split mold and facilitating the winding of the composite material.

[0034] Step 3: After ensuring that the split mold is fully open and the metal annular rib and aluminum mold are fixed, the composite material is wound. Ensure that the split mold is always fully open throughout the entire winding process.

[0035] Fourth step: To avoid damage to the electronic device when it is heated and for safety reasons, the coupling can be removed after the composite material is wound to separate the electronic device.

[0036] Step 5: The other structures other than the electronic device are all placed in the heating chamber, and the composite material is hot-molded. It is heated to the target temperature and kept warm for a while, then removed and air-cooled to room temperature before being reattached and connected to the stepping motor.

[0037] Step 6: Control the stepper motors on both sides, set the rotation speed of the stepper motors to n, and after excitation of the right stepper motor, start rotating. After ts, start the left stepper motor, giving a time difference to the two sets of different mold sheets, and achieving the shrinkage of the split mold.

[0038] The load torque of the motor can be calculated using equation (1), where μ is the friction coefficient, W is the weight (kg) of the composite columnar pressure-resistant case with an inner metal annular rib, P is the thread pitch (m), 1 / R is the reduction ratio, and η is the efficiency of the transmission coefficient. The distance the screw moves the link horizontally can be calculated using equation (2), where L is the horizontal movement distance of the link (m), and K is the number of rotations of the screw.

[0039]

number

[0040] N=n·t (3) Step 7: When the split mold has contracted to the set value, the stepping motor is turned off and the coupling is removed to release the restriction of the support frame on one side, and the split mold and related structures are axially removed from the other side.

[0041] Step 8: Separate the aluminum molds on both ends.

[0042] Ninth step: A composite column-shaped pressure case with an inner metal annular rib is obtained.

[0043] Finally, a composite columnar pressure case with an inner metal annular rib is completed. Compared to conventional composite processing techniques, this processing method's greatest advantage is its lightweight design, which eliminates the need for a separate intermediate metal annular rib mold and allows the split mold to automatically open and retract, resulting in more precise operation. The finished composite product processed using this equipment not only ensures structural strength and toughness, but also reduces the weight of the finished product, making composite processing more environmentally friendly and economical.

Claims

1. A processing device for a columnar pressure-resistant case made of a composite material having an annular metal rib lining, comprising: The composite columnar pressure case includes a composite columnar casing (5), and a plurality of metal annular ribs (14) are installed on the inner wall of the composite columnar casing (5), and the metal annular ribs are in close contact with the composite columnar casing; Two metal annular ribs are provided on the inner wall of the composite material columnar casing; The processing device includes a heating device, a bracket (1), a driving device, and a mold. The mold includes a split mold (6) and an aluminum film (4). The split mold is installed between two metal annular ribs (14). An aluminum film (4) is installed at each end of the two metal annular ribs (14) that are away from the split mold (6). The split mold (6), the metal annular ribs (14), and the aluminum film (4) are positioned by a bracket (1). The split mold (6), the metal annular ribs (14), and the aluminum film (4) are a cylindrical outer wall is formed on the outer wall surface of the composite material casing (4), the heating device is used to form a composite material casing (5) by heating after a composite material layer is provided on the cylindrical outer wall, the split mold includes a plurality of alternatingly arranged first mold plates and second mold plates, and the driving device drives the first mold plate (61) and the second mold plate (62) so that they respectively contract, separate from the metal annular rib, and detach from the composite material casing.

2. 2. The processing apparatus according to claim 1, wherein the driving device includes a first driving unit, a second driving unit, and a screw connecting device (11), the first mold plate (61) and the second mold plate (62) are both hinged to the screw connecting device (11) via a link, the first driving unit drives the first mold plate to contract, and the second driving unit drives the second mold plate to contract, and the first driving unit and the second driving unit are activated at different times.

3. The first drive unit includes a first drive motor (2), a first screw (9), and a first screw nut (13), the first drive motor is mounted on a bracket (1), one end of the first screw (9) is fixedly connected to the first drive motor (2), and the other end of the first screw is fixedly connected to a screw joint device (10), the first screw nut is mounted on the first screw and is hinged via a drive rod to a link (7) connected to the first mold plate, the first drive motor rotates to rotate the first screw, and the first screw rotates to move the first screw nut, thereby moving the first mold plate closer to or away from the first screw, and the second drive unit includes a second drive motor (16), a second 3. The processing device according to claim 2, further comprising: a screw (17) and a second screw nut (18); the second drive motor is mounted on a bracket; one end of the second screw is fixedly connected to the second drive motor and the other end of the second screw is fixedly connected to a screw connecting device (10); the second screw nut is mounted on the second screw and hinged to a link connected to the second mold plate via a drive rod; the second drive motor rotates to rotate the second screw, and the second screw rotates to move the second screw nut, thereby moving the second mold plate toward or away from the second screw; the first screw and the second screw extend in the same straight line and rotate relatively independently.

4. 4. The processing device according to claim 3, wherein when the first mold plate and the second mold plate are simultaneously contracted or expanded, the first threaded nut and the second threaded nut move in the same direction.

5. 5. The processing device according to claim 4, wherein the contact surfaces between the first mold plate (61) and the second mold plate (62) are provided with matching stepped locking holes, the stepped locking holes on both sides of the first mold plate are both located on the outside, and the stepped locking holes on both sides of the second mold plate are both located on the inside, the first driving unit is started before the second driving unit, and the first driving unit and the second driving unit are stopped simultaneously.

6. 5. The processing device of claim 4, wherein the first and second mold plates move to the first end of the composite columnar casing when contracted, the longitudinal cross section of the metal annular rib near the first end of the composite columnar casing is trapezoidal, and the outer trapezoidal base of the longitudinal cross section of the metal annular rib is longer than the inner trapezoidal base, the longitudinal cross sections of the first and second mold plates are right-angled trapezoids, and the oblique side of the right-angled trapezoid matches the oblique side of the trapezoid of the longitudinal cross section of the metal annular rib.

7. A processing method using the processing device according to any one of claims 1 to 6, (1) Assembling the processing device, and installing the drive unit, the mold and the metal annular rib on the bracket; (2) driving the split mold so that the driving device expands, and the split mold, the metal annular rib, and the outer wall surface of the aluminum film form a columnar outer wall; (3) winding a composite material around the outer wall of the column; (4) hot forming the composite material to form a composite prismatic casing; (5) a step in which the driving device drives the split mold to contract, thereby realizing the split mold being separated from the composite material columnar casing; (6) A processing method using the processing device described in any one of claims 1 to 6, characterized in that it includes a step of releasing the restriction of the bracket and detaching the aluminum film from the composite material columnar casing to obtain a composite material columnar pressure-resistant case having an inner lining metal annular rib.

8. 8. The method of claim 7, wherein in step (4), the composite material is hot-molded in a heating chamber, and the electronic device is removed before heating, heated to a target temperature and kept warm for a while, then removed from the heating chamber, and air-cooled to room temperature before being reattached and connected to the electronic device.

Images