Method for preparing inner liner of gourd-shaped airbag leak stopper for ship

Abstract

The present invention relates to a method for preparing an inner liner of a gourd-shaped airbag leak stopper for ships, which is characterized by: making a gourd-shaped inner liner mold, pre-treating the gourd-shaped inner liner mold with glue, air-drying, applying glue, drying, demoulding, and obtaining a finished inner liner. Beneficial effects: The present invention reduces the circumferential size of the gourd-shaped inner liner mold and saves the material of the gourd-shaped inner liner mold. The petal design is adopted to achieve a larger extension space for the inner liner under a smaller gourd-shaped inner liner mold size, and the petal-shaped inner liner can be folded better before the plugging operation. The integrated process flow and universal technical solution are adopted to make the preparation of the inner liner simple, fast and low-cost.

Description

Technical Field

[0001] The invention belongs to the technical field of hull breach plugging equipment, and in particular relates to a method for preparing an inner liner of a gourd-shaped airbag leak plugger for ships. Background Art

[0002] When a ship is hit by an explosive or collides with a reef, a noticeable breach will occur in the hull. There is an urgent need for a flexible plugging device that can be applied to different breaches. The plugging device has an outer liner and an inner liner in structure. The outer liner can play a role in shaping, cutting and puncture prevention, and the inner liner can adapt to different breach shapes. The combination of the two can quickly and effectively seal the breach and avoid the risk of the ship capsizing or sinking. In response to the marine dangers caused by ship breaches, a flexible airbag plug can be used. The flexible airbag plug can effectively adapt to hull breaches of different shapes, and its flexible structure can deform accordingly according to the contacted breach surface to effectively seal the breach. In addition to the above advantages, the gourd-shaped flexible airbag plug can also play a role in sealing tightly and preventing external pulling caused by water flow impact. As an important component of the gourd-shaped flexible airbag plug, its design and preparation play a decisive role in the performance of the airbag plugging device. For example, a patent document with authorization announcement number CN 204383734 U discloses a marine airbag-type quick leak plugger, including a composite airbag, an air intake control valve, an airbag fixing sleeve, an operating handle, a miniature high-pressure gas storage cylinder and an air guide support rod. The composite airbag is composed of an inner sealed bladder body and an outer high-strength bladder body to form a thin-walled double-layer composite structure.

[0003] At present, there is still a lack of a mature and effective design and preparation process for the inner liner of airbag-type leak-proof equipment, especially the design and preparation process of the gourd-shaped inner liner mold of airbag-type leak-proof equipment, which is very critical to the quality of the entire airbag production.

[0004] Traditional airbag leak pluggers are mainly single-layer, made of rubber or TPU, and are prone to puncture during plugging operations, poor adaptability, and weak deformation capabilities. The commonly used preparation process is to manufacture through an internal pressure gourd-shaped liner gourd-shaped liner mold. The gourd-shaped liner gourd-shaped liner mold is large in size, and the airbag has poor ductility. It is impossible to have too much volume change on the basis of the gourd-shaped liner gourd-shaped liner mold. The airbag rubber is generally applied manually, and the rubber is air-dried and solidified to form an airbag, and the production quality cannot be controlled. At the same time, the airbag is generally spherical, cylindrical, or conical, and the requirements for the airbag profile during the leak plugging process are not considered. The leak plugging airbag manufacturing process is inconvenient to operate and is not suitable for mass production of products. The surface rubber applied manually is also prone to uneven distribution, which has an adverse effect on the cost of controlling the preparation process. These unfavorable defects have brought many restrictions to the production of hull breach airbag liner. Therefore, a method for accurately, efficiently, and reliably preparing a breach airbag liner is needed. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned technology and to provide a method for preparing the inner liner of a marine gourd-shaped airbag leak stopper. The gourd-shaped inner liner mold adopts a petal design, so that the inner liner has a larger extension space under the smaller gourd-shaped inner liner size, and the petal-shaped inner liner can be better folded before the plugging operation.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a method for preparing the inner liner of a gourd-shaped airbag leak stopper for ships, characterized by: making a gourd-shaped inner liner mold - pre-treating the gourd-shaped inner liner mold with glue - air drying - applying glue - drying - demoulding - obtaining the inner liner finished product, and the specific production steps are as follows:

[0007] Step 1: Make a gourd-shaped inner pot mold

[0008] (1) Determine the basic shape of the gourd-shaped inner liner mold, the gourd-shaped inner liner mold includes a waist diameter, a maximum diameter of the gourd big end, and a maximum diameter of the gourd small end, and make a gourd-shaped inner liner mold with a profile feature;

[0009] (2) The gourd-shaped liner mold adopts a petal-like petal structure;

[0010] Step 2: The gourd-shaped liner mold is installed on a crane;

[0011] Step 3: Glue pretreatment

[0012] (1) preparing an auxiliary coagulant: the auxiliary coagulant includes calcium chloride and clay, which are mixed according to the weight percentage of calcium chloride accounting for 40% and clay accounting for 60%;

[0013] (2) immersing the gourd-shaped inner pot mold in a water tank at 80° C. to 100° C. to preheat the gourd-shaped inner pot mold, and controlling the heating time to be about 10 minutes;

[0014] (3) Immerse the heated gourd-shaped inner liner mold in a material tank containing an auxiliary material coagulant. After immersion for 15-20 minutes, suspend the gourd-shaped inner liner mold coated with the auxiliary material coagulant on a crane and use a motor to control it to swing 60° counterclockwise, then return to the original position with the bottom facing down and swing 60° clockwise to perform a reciprocating operation. After completing three reciprocating operations, swing it 180° counterclockwise. At this time, the bottom of the mold faces upward. Use a motor to control it to swing 60° clockwise, then return to the original position with the bottom facing up and swing 60° counterclockwise to perform a reciprocating operation. After completing three reciprocating operations, the paste-like auxiliary material coagulant is evenly coated, and the glue pretreatment is completed;

[0015] Step 4: Glue application

[0016] (1) Lifting operation: gradually immerse the gourd-shaped liner mold in the rubber pool, and then lift it out of the rubber pool;

[0017] (2) Rotation operation: The hanging plate of the gourd-shaped liner mold first rotates clockwise, then slowly rotates 180 degrees and stays for 5-10 seconds;

[0018] Step 5: Post-treatment of glue coating

[0019] Move out the glue pool, push the mold support cart to the bottom of the suspended gourd-shaped liner, transfer the suspended liner to the mold support cart, let it air dry for about 0.5 hours, push the mold support cart into the drying box, dry for 2-3 hours and heat at 70℃-80℃, after drying, push the mold support cart out of the drying box;

[0020] Step 6: Demolding

[0021] Remove each gourd-shaped liner mold from the mold support vehicle, place it on a fixed support with its big end facing upward and its small end facing downward, and cool it down by pouring cold water from the top big end. Manually peel it off step by step from the bottom to the top from the upper port of the small end of the airbag liner until the liner is completely separated from the gourd-shaped liner mold. The demolding process is completed to obtain a finished liner.

[0022] Furthermore, the port of the gourd-shaped liner mold described in step one is provided with a taper.

[0023] Furthermore, the gourd-shaped liner mold described in step one is made of aluminum alloy material.

[0024] Furthermore, the hanging plate on the gourd-shaped liner mold support vehicle in step 2 can simultaneously install multiple gourd-shaped liner molds.

[0025] Furthermore, in step 4, when the glue coating liquid on the surface of the gourd-shaped inner liner mold changes from large-volume droplets to small-volume droplets at a dripping speed of no more than 6 to 8 drops per minute, the rotation operation is performed.

[0026] Beneficial effects: The process method for preparing the gourd-shaped liner of a marine airbag plug has the following characteristics: (1) The circumferential size of the gourd-shaped liner mold is reduced and the material of the gourd-shaped liner mold is saved. The gourd-shaped liner mold adopts a petal design, so that the liner has a larger extension space under the smaller gourd-shaped liner mold size, and the petal-shaped liner can be folded better before the plugging operation. (2) The method is simple, accurate, and the liner is easy to make. The design process of the crane, the glue tank and the guide rail are coordinated to facilitate the batch operation and process processing of the liner gluing preparation. The motor, the reducer and the glue crane are used to coordinate the material to ensure the uniformity and accuracy of the coating. (3) The method adopts an integrated process flow and a universal technical solution, which makes the preparation of the liner simple, fast and low-cost. Moreover, the technical solution is not limited to the preparation of the gourd-shaped liner, and can be extended to the preparation of liners of other shapes. The inner liner is generally manufactured using latex materials with good elasticity and plasticity. This method realizes an integrated preparation process from gourd-shaped inner liner mold design to material dipping, material leveling, drying, demoulding, etc. At the same time, this method is not only suitable for the design and manufacture of gourd-shaped inner liners with complex lines, but can also be extended to the preparation of other forms of inner liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Gourd-shaped airbag gourd-shaped liner gourd-shaped liner gourd-shaped liner mold diagram;

[0028] Figure 2 Gourd-shaped liner gourd-shaped liner mold support car diagram;

[0029] Figure 3 It is a schematic diagram of glue pretreatment;

[0030] Figure 4 1. It is a schematic diagram of the gluing lifting operation;

[0031] Figure 5 2. It is a schematic diagram of the gluing and rotating operation;

[0032] Figure 6 This is a diagram of a gourd-shaped liner mold fixing bracket for demoulding a gourd-shaped liner.

[0033] In the figure: 1. mold support car, 2. hanging plate, 3. mounting plate, 4. guide rail, 5. rubber pool. DETAILED DESCRIPTION

[0034] In order to be able to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention, and the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the art without making creative work are within the scope of protection of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] In the various embodiments of the present invention, for the convenience of description and not to limit the present invention, the term "connection" used in the patent application specification and claims of the present invention is not limited to physical or mechanical connection, but may include electrical connection, whether direct or indirect. "Up", "down", "below", "left", "right", etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

[0036] As shown in the attached drawings, this embodiment provides a method for preparing the inner liner of a gourd-shaped airbag plug for a ship, which mainly designs a gourd-shaped inner liner mold, combines a coating crane and a liquid coating pool to coat the special gourd-shaped inner liner mold with a liquid coating, and then air-dries it. After the air-drying is completed, it is coated with glue, and after a period of natural air drying, it is dried by a dryer, and finally demolded to obtain a finished inner liner. This preparation process method allows the curvature shape of the inner liner to be preliminarily controlled, and can be well matched with the shape of the outer liner. The gourd-shaped inner liner mold adopts a split-petal design to reduce the circumferential size of the gourd-shaped inner liner mold and save the gourd-shaped inner liner mold material. By controlling the motor, the liquid glue is coated on the surface of the inner liner as evenly as possible, and the excess glue returns to the glue pool due to gravity, which can make the glue efficient and save the cost of the inner liner preparation process. And under the cooperation of the glue crane and the glue pool, a single glue coating can assemble multiple inner liner at the same time for operation, which effectively improves the process efficiency of batch preparation of the inner liner and facilitates the industrialization of the inner liner preparation. The specific design and production plan is as follows:

[0037] Step 1: Make a gourd-shaped inner pot mold

[0038] (1) According to the size of the breach in the hull, the ductility of the latex and the expansion law of the liner are fully considered to determine the waist diameter, the maximum diameter of the big end of the gourd, and the maximum diameter of the small end of the gourd. The basic shape of the gourd-shaped liner mold is determined. According to the requirements of the curvature morphology characteristics of other positions, a gourd-shaped liner mold with a profile feature is designed.

[0039] (2) According to the sealing requirements of the gourd-shaped inner liner port and the equipment, the port of the gourd-shaped inner liner mold is designed to have a certain taper.

[0040] (3) In order to reduce the circumferential size of the gourd-shaped inner liner mold and save the material of the gourd-shaped inner liner mold, and ensure that the inner liner airbag can meet the needs of leak plugging, the gourd-shaped inner liner mold adopts a petal design, so that the inner liner has a larger extension space under the smaller gourd-shaped inner liner mold size, and the petal-shaped inner liner can be better folded before the plugging operation.

[0041] (4) The gourd-shaped liner mold is made of aluminum alloy material, which is light in weight and easy to operate.

[0042] Step 2: Install the gourd-shaped liner mold on the crane

[0043] Install the gourd-shaped liner mold on the hanging plate 2 on the gourd-shaped liner mold support vehicle 1, move the gourd-shaped liner mold support vehicle to the lower end of the crane, adjust its vertical height so that the holes on the gourd-shaped liner mold fixing plate on the crane are aligned with the holes on the gourd-shaped liner mold mounting plate, use bolts to tightly connect the gourd-shaped liner mold mounting plate 3 with the gourd-shaped liner mold fixing plate to achieve the installation and fixation of the gourd-shaped liner mold, loosen the gourd-shaped liner mold hanging plate on the gourd-shaped liner mold support vehicle, adjust the vertical height of the crane, and move the gourd-shaped liner mold support vehicle. The hanging plate on the gourd-shaped liner mold support vehicle can simultaneously install multiple gourd-shaped liner molds to meet mass production.

[0044] Step 3: Glue pretreatment

[0045] (1) A coagulant is prepared, which includes calcium chloride and clay. The weight percentage of the mixture is 40% calcium chloride and 60% clay. The calcium chloride plays a role in coagulation, and the clay plays a role in demoulding.

[0046] (2) Immerse the gourd-shaped inner pot mold in a water tank at 80° C.-100° C. to heat the gourd-shaped inner pot mold, and control the heating time to be about 10 minutes.

[0047] (3) Immerse the heated gourd-shaped inner liner mold in a material tank containing an auxiliary material coagulant. After immersion for 15-20 minutes, suspend the gourd-shaped inner liner mold coated with the auxiliary material coagulant on a crane and use a motor to control it to swing 60° counterclockwise, then return to the original position with the bottom facing down and swing 60° clockwise to perform a reciprocating operation. After completing three reciprocating operations, swing it 180° counterclockwise. At this time, the bottom of the mold faces upward. Use a motor to control it to swing 60° clockwise, then return to the original position with the bottom facing up and swing 60° counterclockwise to perform a reciprocating operation. After completing three reciprocating operations, the paste-like auxiliary material coagulant is evenly coated, and the glue pretreatment is completed;

[0048] Step 4: Apply glue (the inner liner is made of latex material with good elasticity and plasticity)

[0049] (1) Lifting operation

[0050] The side of the crane is provided with a lifting handle and a rotating handle, which can be moved longitudinally and rotated around an axis. After the liner is placed on the crane, operate the lifting handle to gradually lower the crane, and gradually immerse the gourd-shaped liner mold in the rubber pool. When the liner is basically immersed in the rubber pool, stop the lowering operation. Operate the lifting handle to make the crane perform a lifting operation, so that the liner coated with rubber on the surface is gradually lifted out of the rubber pool. When all are detached to the horizontal height of the rubber pool, the excess liquid rubber on the surface of the liner will gradually slide down along the surface of the liner and gather at the bottom, and glue dripping will occur. When the liquid rubber on the surface of the liner changes from large volume droplets to small volume droplets and the glue dripping speed does not exceed 6 to 8 drops per minute, the rotation operation is performed.

[0051] (2) Rotation operation

[0052] Operate the motor working button, the gourd-shaped inner liner mold hanging plate will first rotate clockwise, then slowly rotate 180 degrees, and stay for about 5 to 10 seconds, so that the liquid glue on the surface of the inner liner can be traced back and covered more evenly. To ensure uniform coating of glue, set the motor control program to achieve repeated operations at a relatively slow and uniform speed through the reducer. After visually observing that the glue has been basically evenly coated on the surface of the inner liner, the operation is completed.

[0053] Step 5: Post-treatment of glue coating

[0054] After the glue coating is completed, use the guide rail 4 to remove the glue pool 5. Push the gourd-shaped liner mold support cart to the bottom of the suspended liner, move the hanging plate, so that the suspended liner is transferred from the crane to the gourd-shaped liner mold support cart, and naturally air-dry for a period of time. Push the gourd-shaped liner mold support cart into the drying box. Start the drying box and set the drying time and heating program to dry the gourd-shaped liner mold coated with glue after air drying. Under the action of heating and temperature rise, the moisture content of the liner glue layer is reduced, the structural strength is increased, and the elasticity and plasticity are better. After the drying operation is completed, push the gourd-shaped liner mold support cart out of the drying box.

[0055] Step 6: Demolding

[0056] Push the gourd-shaped liner mold support cart to an open area for demoulding. Considering the space requirements for demoulding operations, remove each gourd-shaped liner mold from the gourd-shaped liner mold support cart, with its big end facing up and its small end facing down. Each gourd-shaped liner mold is installed on a fixed bracket with a large distance between them. In order to promote the success rate of demoulding, pour cold water from the big end of the top of the gourd-shaped liner mold. With the continuous pouring of cold water, the temperature of the rubber on the surface of the gourd-shaped liner mold gradually decreases. There is a temperature difference between the temperature of the surface of the gourd-shaped liner mold and the temperature of the rubber. With the continuous injection of cold water, the temperature difference between the two continues to increase. In addition, the auxiliary coagulant for the initial dipping of the gourd-shaped liner mold contains clay, which can help demould the liner. Due to the temperature difference between the two, the thermal expansion and contraction caused by the temperature difference effect at the contact surface causes the two to gradually separate. After the cold water is injected for a period of time, the airbag liner is manually peeled off from the upper end of the small head from bottom to top until the liner is completely separated from the gourd-shaped liner mold, that is, the demoulding process is completed to obtain the finished liner.

[0057] The present invention mainly solves four technical problems: first, the design of the mold for the gourd-shaped inner liner of the airbag leak plugging device is realized; second, an integrated preparation process such as dipping, mixing, drying, and demoulding is designed; third, the glue coating crane, glue pool, guide rail and motor-reducer are used to coordinate and ensure the uniformity and accuracy of the coating. Fourth, a specific preparation process is adopted to achieve high uniformity, high quality and easy demoulding of the glue coating of the inner liner of the airbag leak plugging device.

[0058] The working principle of the present invention is:

[0059] 1. A petal-type gourd-shaped inner liner mold for a gourd-shaped airbag leak plugger was designed. The gourd-shaped inner liner mold has gourd-shaped structural characteristics and localized characteristic lines. It takes into account the requirements for leak-proof sealing at the breach and the external dragging environment caused by water flow impact, and is specially made into three parts: a large head, a waist, and a small head. Considering the ductility of latex and the expansion law of the inner liner, a petal-type design is adopted, which has a larger extension space under the smaller gourd-shaped inner liner mold size. The inner liner prepared by the petal-type gourd-shaped inner liner mold has good foldability, which can reduce the water flow impact resistance of the plugging operation.

[0060] 2. An integrated preparation process for pretreatment, impregnation, mixing, drying, and demoulding is designed. This preparation process ensures the quality of the liner preparation by strictly controlling each step of the process. For example, during the pretreatment of the impregnation, the coagulant of the auxiliary material must reach a paste state before the impregnation can be carried out; during the impregnation process, the impregnation time is controlled, and the completion of the impregnation is judged as follows: the liquid glue on the surface of the liner changes from large volume droplets to small volume droplets and the glue dripping speed does not exceed 6 to 8 drops per minute; during the mixing process, the gourd-shaped liner mold hanging plate first rotates clockwise, gradually and slowly rotates 180 degrees, stays for about 5 to 10 seconds, and repeats the process many times; during the drying process, the drying time and heating program are strictly controlled; during the demoulding process, a combination of cold water pouring and experience is used.

[0061] 3. Use a special glue crane, glue tank, guide rail and motor-reducer to cooperate with each other to achieve batch preparation and quality control. The glue crane has multiple installation heads, which can install multiple airbag gourd-shaped liner molds at the same time, and can glue multiple liners at the same time in a single operation. At the same time, the glue tank and guide rail are designed to cooperate with each other, and the transfer operation of the gourd-shaped liner mold support vehicle can realize the rapid progression of adjacent glue coating operations, effectively realizing the batch production of liner gluing operations. The motor, reducer and glue crane are used in combination with the control program and process requirements to ensure the quality of liner preparation.

[0062] 4. A specific preparation process is adopted to realize easy demoulding of the inner liner of the airbag plugging equipment. This preparation process adopts some specific processes, and calcium chloride accounts for 40% and clay accounts for 60% by weight to form an auxiliary coagulant. The clay component can help demould the inner liner during the demoulding process. Combined with the temperature difference caused by pouring cold water from the big end of the gourd-shaped inner liner mold during the demoulding process, the difference in shrinkage rate between the gourd-shaped inner liner mold and the inner liner can achieve high-quality demoulding.

[0063] The above-mentioned detailed description of the method for preparing the inner liner of a gourd-shaped airbag leak stopper for ships with reference to the embodiment is illustrative rather than restrictive, and several embodiments can be listed according to the limited scope. Therefore, changes and modifications without departing from the overall concept of the present invention should fall within the scope of protection of the present invention.

Claims

1. A method for preparing the inner liner of a gourd-shaped airbag leak stopper for ships, characterized in that: Making gourd-shaped inner liner mold - gourd-shaped inner liner mold glue pretreatment - air drying - coating glue - drying - demoulding - obtaining the inner liner finished product, the specific production steps are as follows: Step 1: Make a gourd-shaped inner pot mold (1) Determine the basic shape of the gourd-shaped inner liner mold, which includes a waist diameter, a maximum diameter of the gourd big end, and a maximum diameter of the gourd small end, and make a gourd-shaped inner liner mold with profile characteristics; (2) The gourd-shaped liner mold adopts a petal-like petal structure; Step 2: The gourd-shaped liner mold is installed on a crane; Step 3: Glue pretreatment (1) Preparing an auxiliary coagulant: The auxiliary coagulant includes calcium chloride and clay, which are mixed according to the weight percentage of calcium chloride accounting for 40% and clay accounting for 60%; (2) Immerse the gourd-shaped inner pot mold in a water tank at 80°C-100°C to preheat the gourd-shaped inner pot mold, and control the heating time to about 10 minutes; (3) Immerse the heated gourd-shaped inner liner mold in a material tank containing an auxiliary material coagulant for 15-20 minutes, and then suspend the gourd-shaped inner liner mold coated with the auxiliary material coagulant on a crane, and use a motor to control it to swing 60 degrees counterclockwise, and then return to the original position with the bottom facing down and then swing 60 degrees clockwise, so as to perform a reciprocating operation; after completing three reciprocating operations, make it swing 180 degrees counterclockwise, at this time the bottom of the mold faces upward, and use a motor to control it to swing 60 degrees clockwise, and then return to the original position with the bottom facing up, and then swing 60 degrees counterclockwise, so as to perform a reciprocating operation. After completing three reciprocating operations, the paste-like auxiliary material coagulant is evenly coated, and the glue pretreatment is completed; Step 4: Glue application (1) Lifting operation: gradually immerse the gourd-shaped liner mold in the rubber pool, and then lift it out of the rubber pool; (2) Rotation operation: The hanging plate of the gourd-shaped liner mold first rotates clockwise, then slowly rotates 180 degrees and stays for 5-10 seconds; Step 5: Post-treatment of glue coating Move out the glue pool, push the mold support cart to the bottom of the suspended gourd-shaped liner, transfer the suspended liner to the mold support cart, air dry it naturally for 0.5 hours, push the mold support cart into the drying box, dry it for 2-3 hours and the heating temperature is 70℃-80℃. After drying, push the mold support cart out of the drying box; Step 6: Demolding Remove each gourd-shaped liner mold from the mold support vehicle, place it on a fixed support with its big end facing upward and its small end facing downward, and cool it down by pouring cold water from the top big end. Manually peel it off step by step from the bottom to the top from the upper port of the small end of the airbag liner until the liner is completely separated from the gourd-shaped liner mold. The demolding process is completed to obtain a finished liner.

2. The method for preparing the inner liner of the gourd-shaped airbag leak stopper for ships according to claim 1 is characterized by: The port of the gourd-shaped liner mold described in step 1 is provided with a taper.

3. The method for preparing the inner liner of the gourd-shaped airbag leak stopper for ships according to claim 1 is characterized by: The gourd-shaped liner mold described in step 1 is made of aluminum alloy material.

4. The method for preparing the inner liner of the gourd-shaped airbag leak stopper for ships according to claim 1 is characterized by: The hanging plate on the gourd-shaped liner mold support vehicle described in step 2 can simultaneously install multiple gourd-shaped liner molds.

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