Manufacturing method of light toilet module for high-speed motor train unit

Abstract

The invention relates to the technical field of motor train toilet modules, in particular to a manufacturing method of a light toilet module for a high-speed motor train unit. Comprising the following steps: S1, blending resin: firstly, adding a flame retardant, stirring for a long time by using a stirrer until no large filler particles exist in the resin, and standing to exhaust gas after blending; adding styrene before use, and stirring again by using a stirrer; and then adding the accelerant and fully and uniformly stirring. By adopting light materials, optimizing the structural design and improving the manufacturing process, the weight of the toilet module is effectively reduced, the energy consumption of the motor train unit is reduced, and the operation efficiency and economical efficiency of the motor train unit are improved.

Description

Technical Field

[0001] The invention relates to the technical field of toilet modules for motor vehicles, and in particular to a method for manufacturing a lightweight toilet module for high-speed motor vehicles. Background Art

[0002] With the rapid development of high-speed EMUs, the requirements for toilet modules are increasing. Traditional toilet modules have a large room for optimization in terms of weight. Overweight toilet modules will increase the energy consumption of EMUs, affecting their performance and operating costs. In addition, continuous improvement and innovation are also needed in terms of strength, modality and usage requirements to meet passengers' needs for comfort and safety.

[0003] At present, some toilet modules on the market have deficiencies in material selection, structural design and manufacturing process, resulting in heavy weight, unsatisfactory strength and modal performance, inconvenient use and other problems. Therefore, it is necessary to develop a method for manufacturing lightweight toilet modules for high-speed EMUs to solve these problems and improve the overall performance and competitiveness of EMUs. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of the prior art and to propose a method for manufacturing a lightweight toilet module for a high-speed train set.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A method for manufacturing a lightweight toilet module for a high-speed train set comprises the following steps:

[0007] S1. Prepare the resin: first add the flame retardant and stir it with a mixer for a long time until there are no large filler particles in the resin. After preparation, let it stand and exhaust the gas;

[0008] Before use, add styrene and stir again with a mixer; then add the accelerator and stir thoroughly;

[0009] When using, add the curing agent for on-site preparation. The amount of curing agent should be added according to the on-site temperature, resin amount and gel time. When preparing, use a standard measuring cup to weigh the curing agent and add it to the resin. Use a glue stick to stir evenly to avoid mixing too much air. It can be used after the curing agent and resin are fully mixed.

[0010] S2. Cutting felt: Prepare the felt cloth according to the size and shape of the mold, stack the cut felt cloth according to the laying order and the number of pasting layers, and mark them for the convenience of workers to identify and operate;

[0011] S3. Prepare the mold: clean the mold surface with clean cotton yarn, dip 8# wax with clean cotton yarn and wax evenly from one side of the mold, with a circular motion of 200 in diameter, and apply the wax evenly without omission. After drying for 15 minutes, wipe it clean with cotton yarn;

[0012] S4, spraying gel coat: spraying thickness is 400μm-600μm wet film, spraying pressure is 0.3MPa (43.5PSI)-0.6MPa (87PSI), curing agent ratio is winter and spring curing agent addition (1.5% ~ 2.0%), summer and autumn curing agent addition (1.2% ~ 1.5%);

[0013] S5. Hand paste forming: Use a brush to apply resin to the untwisted yarn and fill the concave corners of the mold to prevent air holes from being generated when pasting the fiber felt later; lay the fiber layer by layer according to the laying requirements, pay attention to the uniform force when rolling to prevent excessive force from damaging the gel coat layer, and remove burrs and bubbles during curing; paste the reinforcement layer with 2 layers of 450g / ㎡ felt, each layer must be dotted with resin, carefully rolled with a roller, and the bubbles are removed and cured; bond the embedded parts or FRP reinforcements according to the requirements of the drawing, and use transparent sealant for bonding. The gaps around the reinforcements should also be coated with transparent sealant. It is strictly forbidden to fill the gaps with putty to prevent the product from mounting the reinforcement. After curing, paste the embedded parts or FRP reinforcements with two layers of 300g / ㎡ chopped felt strips and cure;

[0014] S6. Curing and demoulding: The product needs to be heated in a drying room at 30℃-60℃ for at least 3 hours. After reaching a certain hardness, it needs to be taken out of the drying room and aired to room temperature. In order to prevent product deformation, the paste product must be demoulded after curing for more than 24 hours. After the product is demoulded, it must be placed for more than 1 day before it can be cut. When demoulding, use a wooden wedge to pry up the product evenly on all sides. If a metal crowbar is used, the part in contact with the product must be wrapped with cotton yarn to avoid damaging the product.

[0015] S7. Accessory installation: glue the inserts and reinforcements in the positions required by the drawings. After curing, paste the inserts with two layers of 300g / ㎡ felt and cure;

[0016] S8, cutting and polishing: Cut, open and drill the product according to the mold line, polish the smooth surface of the product according to the requirements of the drawing, polish the bonding part of the accessories, and polish the back of the product to make sure there are no burrs, bulges and glue drops on the back of the fiberglass parts; the installation surfaces around the top plate, wall panels, etc. should be smoothed, and the back of the pressure strip should be polished smooth as a whole to facilitate bonding and buckling;

[0017] S9, Surface treatment: Grind the gel coat surface of the product, first use 100# sand disc or 120# dry sandpaper to repair the surface defects, and finally use 180# dry sandpaper to grind until the surface is matte;

[0018] S10, Inspection transfer: self-inspection, inspection transfer, after passing the inspection, transfer to the painting workshop for painting or transfer to the assembly workshop for installation of accessories;

[0019] S11. Product assembly: Install the floor connecting beam, polish the installation area on the back of the connecting beam, wash 8*12 oblong holes at intervals of 300mm as glue holes, evenly apply structural glue on the installation area, bond the connecting beam to the back of the floor according to the positioning size, fix it tightly, and evenly drill countersunk holes and screw in 4*16 stainless steel self-tapping screws after the bonding is cured;

[0020] Installation of skirting board: Use 36# sandpaper to polish the bonding area between skirting board and floor, evenly apply SIKAFLEX-221 sealant on the back of skirting board, use aluminum square tube clamp to fix skirting board to floor, glue each skirting board in turn, and remove the square steel tube clamp after the sealant is cured;

[0021] During the bonding process of the floor cloth, cut the floor cloth according to the floor cloth sample, polish the bonding area between the floor cloth and the fiberglass, evenly apply the floor cloth adhesive on the bonding surface between the floor cloth and the fiberglass, flatten and compact the floor cloth when the adhesive is no longer sticky, leave a 5mm glue seam between the floor cloth and the fiberglass, apply sealant at the gap after the floor cloth adhesive is cured, and use the floor cloth welding rod to fill the joints between the floor cloths;

[0022] During the bathroom assembly process, place the bathroom side wall components and the door partition components on the floor in sequence to ensure that the inner wall of the shell and the inner wall of the floor are at the same level. Use a clamp to fix the shell and the floor shell flange, and install 4*20 stainless steel cross slot pan head bolts at intervals of about 150mm. After the installation is completed, remove the clamp, use 5*16 stainless steel cross slot countersunk bolts to fix the door partition installation beam and the floor installation beam, glue the waste exhaust cover and water tray according to the drawing size, fill the gap with resin putty, paste 2 layers of 300 felt on the back, and evenly apply sealant on the shell flange connection;

[0023] S12, Accessory Installation: Mirror installation, before pasting the mirror, clean the bonding surface with acetone, evenly apply SIKAFLEX-221 sealant, and install the mirror firmly, with uniform flashing around, and the surface and the shell on the same plane;

[0024] Installation of internal accessories: Mark the positioning dimensions of the coat hook on the shell, drill holes, tap threads, and fix the coat hook to the shell with bolts. It is required that there should be no gaps or skew. Mark the positioning dimensions of the handrail on the shell, drill holes, tap threads, and fix the handrail after installing the fixing seat. Drill holes and tap threads on the shell according to the installation hole positions of the tissue box and toilet paper box, and then fix the tissue box to the shell with bolts (self-tapping screws);

[0025] Check the door installation, use structural adhesive to glue and fix the door hinge mounting seat, after preparing the gap and plane around the door, mark and glue the hinge according to the required dimensions on the drawing, use bolts to fix the hinge to the hinge mounting seat, and check that the door is on the same level as the shell after installation.

[0026] Preferably, in the resin preparation step, the resin is mainly unsaturated polyester resin, and the catalyst added to promote the polymerization and hardening of the resin and the accelerator to promote the catalyst effect cannot exceed the necessary amount.

[0027] Preferably, in the hand lay-up step, the reinforcing material is in principle glass fiber, with a single fiber thickness of less than 0.013 mm, and is an alkali-free material unless otherwise specified, and the surface treatment is mainly silane treatment.

[0028] Preferably, in the hand lay-up step, the gel resin must not shrink or crack during use and must have good weather resistance and adhesion to the resin layer.

[0029] Preferably, in the hand lay-up step, the adhesive used when assembling the materials is an unsaturated polyester resin or an epoxy resin adhesive.

[0030] Preferably, in the hand lay-up step, when a flame retardant is used to obtain flame retardancy, the flame retardant may be mixed into the resin within a range that does not affect durability.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] Weight reduction: By adopting lightweight materials, optimizing structural design and improving manufacturing technology, the weight of the toilet module is effectively reduced, the energy consumption of the EMU is reduced, and its operating efficiency and economy are improved.

[0033] Meeting strength and modal requirements: During the design and manufacturing process, the strength and modal performance of the bathroom module were fully considered. Through reasonable structural design and material selection, its stability and reliability during use were ensured, meeting the operating requirements of high-speed EMUs.

[0034] Improve user comfort: Combined with ergonomic analysis, the internal equipment of the toilet is reasonably set to make passengers more convenient and comfortable when using the toilet, thereby improving passenger satisfaction.

[0035] Optimized process: The floor sandwich layer materials and the overall ply structure of the bathroom were optimized to improve work efficiency and reduce production costs.

[0036] Ensure environmental performance: Select green and environmentally friendly materials to ensure that raw materials and adhesives meet relevant environmental standards and reduce the impact on the environment.

[0037] After rigorous testing: The lightweight floor was not damaged after a 200kg static load test, an 80kg force 1Hz 2 million times fatigue test, and a 500kg extreme load test, proving its reliability and durability.

[0038] Improvement and optimization: In response to problems such as excessive shell thickness and improper installation of the baby diaper bed lock and shell that occurred during the development process, effective solutions were taken in a timely manner to improve product quality and performance.

[0039] Comprehensive inspection: Prepare a detailed test outline to check the bathroom module in terms of size, appearance, physical and mechanical properties, non-metallic material fire protection and weight to ensure that the product meets relevant standards and requirements.

[0040] In summary, the method for manufacturing a lightweight toilet module for a high-speed EMU of the present invention has significant beneficial effects and can provide strong support for the development of high-speed EMUs. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] The following is an example of a claim based on the above technical content:

[0043] A method for manufacturing a lightweight toilet module for a high-speed train set comprises the following steps:

[0044] Prepare the resin: first add the flame retardant (filler) and stir it for a long time with a mixer until there are no large filler particles in the resin. After preparation, let it stand to exhaust the gas; before use, add styrene and stir it again with a mixer; then add the accelerator and stir it thoroughly; when using, add the curing agent and prepare it on site. The amount of curing agent should be added according to the temperature on site, the amount of resin, and the gel time. When preparing, use a standard measuring cup to weigh the curing agent and add it to the resin. Use a glue stick to stir it evenly to avoid mixing too much air. It can be used after the curing agent and resin are fully mixed;

[0045] Cutting felt: Prepare the felt cloth according to the size and shape of the mold, stack the cut felt cloth according to the laying order and the number of pasting layers, and mark them for the convenience of workers to identify and operate;

[0046] Prepare the mold: Use clean cotton yarn to clean the surface of the mold, dip clean cotton yarn in 8# wax and wax evenly from one side of the mold, with a circular motion of 200 in diameter, and apply the wax evenly without omission. After drying for 15 minutes, wipe it clean with cotton yarn;

[0047] Spraying gel coat: Spraying thickness is 400μm-600μm wet film, spraying pressure is 0.3MPa (43.5PSI)-0.6MPa (87PSI), curing agent ratio is winter and spring curing agent addition (1.5%~2.0%), summer and autumn curing agent addition (1.2%~1.5%);

[0048] Hand lay-up: Use a brush to apply resin to the untwisted yarn and fill the concave corners of the mold to prevent pores from being generated when the fiber felt is pasted later; lay the fiber layer by layer according to the laying requirements, pay attention to the uniform force when rolling to prevent excessive force from damaging the gel coat layer, and remove burrs and bubbles during curing; paste the reinforcement layer with 2 layers of 450g / ㎡ felt, each layer must be dotted with resin, carefully rolled with a roller, and the bubbles are removed and cured; bond the embedded parts or FRP reinforcements according to the requirements of the drawing, and use transparent sealant for bonding. The gaps around the reinforcements should also be coated with transparent sealant. It is strictly forbidden to fill the gaps with putty to prevent the product from mounting the reinforcement. After curing, paste the embedded parts or FRP reinforcements with two layers of 300g / ㎡ chopped felt strips and cure;

[0049] Curing and demoulding: The product needs to be heated in a drying room at 30℃-60℃ for at least 3 hours. After reaching a certain hardness, it needs to be taken out of the drying room and aired to room temperature. In order to prevent product deformation, the paste product must be demoulded after curing for more than 24 hours. After the product is demoulded, it must be placed for more than 1 day before it can be cut. When demoulding, use a wooden wedge to pry up the product evenly on all sides. If a metal crowbar is used, the part in contact with the product must be wrapped with cotton yarn to avoid damaging the product.

[0050] Accessory installation: glue the inserts and reinforcements in the positions required by the drawings. After curing, paste the inserts with two layers of 300g / ㎡ felt and cure;

[0051] Cutting and grinding: Cut, open and drill the product according to the mold line, grind the smooth surface of the product according to the requirements of the drawing, grind the bonding part of the accessories in place, and grind the back of the product to make sure there are no burrs, bulges or glue drops on the back of the fiberglass parts; the installation surfaces around the top plate, wall panels, etc. should be smoothed, and the back of the layering strip should be polished smooth as a whole to facilitate bonding and buckling;

[0052] Surface treatment: Grind the surface of the gel coat of the product, first use 100# sand disc or 120# dry sandpaper to repair the surface defects, and finally use 180# dry sandpaper to grind until the surface is matte;

[0053] Inspection transfer: self-inspection, inspection transfer, after passing the inspection, transfer to the painting workshop for painting or transfer to the assembly workshop for installation of accessories;

[0054] Product assembly: Installation of floor connecting beams, polish the installation area on the back of the connecting beams, wash 8*12 oblong holes at intervals of 300mm as glue holes, evenly apply structural glue to the installation area, bond the connecting beams to the back of the floor according to the positioning dimensions, fix them tightly, and evenly drill countersunk holes and screw in 4*16 stainless steel self-tapping screws after the bonding is cured; Installation of skirting boards, use 36# sandpaper to polish the bonding area between skirting boards and floors, evenly apply SIKAFLEX-221 sealant on the back of skirting boards, use aluminum square tube clamps to fix skirting boards to the floor, bond each skirting board in turn, and remove the square steel tube clamps after the sealant is cured; Floor cloth bonding process, cut the floor cloth according to the floor cloth sample, polish the bonding area between the floor cloth and the fiberglass, and evenly apply floor cloth adhesive to the bonding surface between the floor cloth and the fiberglass. , when the adhesive is no longer sticky, lay the floor cloth flat and compact it, leave a 5mm glue seam between the floor cloth and the fiberglass, apply sealant to the gap after the floor cloth adhesive is cured, and use floor cloth welding rods to fill the intersection of the floor cloth; during the bathroom assembly process, place the bathroom side wall components and the door partition components on the floor in turn to ensure that the inner wall of the shell and the inner wall of the floor are at the same level, use a large clamp to fix the shell and the floor shell flange, and install 4*20 stainless steel cross slot pan head bolts at intervals of about 150mm. After the installation is completed, remove the large clamp, use 5*16 stainless steel cross slot countersunk bolts to fix the door partition mounting beam and the floor mounting beam, and glue the waste cover water tray according to the drawing size. Use resin putty to fill the gap and paste 2 layers of 300 felt on the back, and evenly apply sealant to the shell flange connection;

[0055] Accessory installation: Mirror installation: Clean the bonding surface with acetone before pasting the mirror, evenly apply SIKAFLEX-221 sealant, and prepare the mirror to ensure it is firmly installed, with uniform seams on all sides and the surface on the same plane as the shell; Internal accessory installation: Mark the positioning dimensions of the coat hook on the shell, drill holes, tap threads, and fix the coat hook to the shell with bolts. There must be no seams or skew. Mark the positioning dimensions of the handrail on the shell, drill holes, tap threads, and fix the handrail after installing the fixing seat. Drill holes and tap threads on the shell according to the mounting hole positions of the tissue box and toilet paper box, and then fix the tissue box to the shell with bolts (self-tapping screws); Check door installation: Use structural adhesive to bond and fix the inspection door hinge mounting seat. After preparing the gap and plane around the inspection door, mark and bond the hinge according to the size required by the drawing, and fix the hinge to the hinge mounting seat with bolts. Check that the door is in the same horizontal plane as the shell after installation.

[0056] In the resin preparation step, the resin mainly adopts unsaturated polyester resin, and the catalyst added to promote the polymerization and hardening of the resin and the accelerator to promote the catalyst effect cannot exceed the necessary amount.

[0057] In the hand lay-up step, the reinforcing material is generally glass fiber, with a single fiber thickness of less than 0.013 mm. Unless otherwise specified, it is an alkali-free material (alkali content less than 0.8%), and the surface treatment is mainly silane treatment.

[0058] In the hand lay-up step, the gel resin must not shrink or crack during use, and must have good weather resistance and adhesion to the resin layer.

[0059] In the hand lay-up step, the adhesive used for assembling the materials is an unsaturated polyester resin or epoxy resin adhesive.

[0060] In the hand lay-up step, when a flame retardant is used to obtain flame retardancy, the flame retardant may be mixed into the resin within a range that does not affect durability.

[0061] The raw materials and adhesives used should be green and environmentally friendly materials, and their environmental performance should comply with the "Limits of Hazardous Substances in Structural Materials" and "Limits of Hazardous Substances in Adhesives" in TB / T3139-2021 "Limits of Hazardous Substances in Interior Materials and Indoor Air of Locomotives and Rolling Stocks".

[0062] The physical and mechanical performance parameters and test methods of the bathroom should meet the following requirements:

[0063] Hardness (Babill) (Mpa)> 25, test method is GB / T3854-2005;

[0064] Water absorption (%) ≤ 0.5, the test method is GB / T1462-2005;

[0065] Tensile strength (Mpa) ≥ 100, test method is GB / T1447-2005;

[0066] Bending strength (Mpa) ≥ 150, test method is GB / T1449-2005;

[0067] Impact toughness (KJ / m 2 )(no notch)≥150, the test method is GB / T1451-2005;

[0068] Resin content (%) ≥ 45, test method is GB / T2577-2005;

[0069] Aldehyde release (mg / l) ≤ 1.5, test method is GB18580-2001;

[0070] The floor is resistant to falling ball impact. In the center of the product, a Ф30 steel ball with a mass of 112±1g is dropped freely from a height of 2m. This is repeated 5 times without any cracks or deformation on the floor.

[0071] The floor is resistant to the impact of sand bags. In the central part of the product, a sand bag with a mass of 6 kg (made of canvas and half a volleyball, filled with dry sand, tied tightly on the top and the hemispherical part facing downwards) was freely dropped from a height of 1 m. This was repeated 5 times, but the floor did not crack or deform.

[0072] The fire protection standard for non-metallic materials in FRP toilets is: TB / T3237-2010 Technical conditions for flame retardant interior materials for EMUs, with the following requirements:

[0073] Fiberglass bathroom floor: oxygen index ≥30, flammability class: Class A, toxicity and smoke density refer to Table 3 and Table 4 of TB / T3237-2010;

[0074] Fiberglass bathroom wall and ceiling panels, etc.: oxygen index ≥35, flammability level: Class A, toxicity and smoke density refer to Table 3 and Table 4 of TB / T3237-2010.

[0075] The appearance and feel of the fiberglass toilet should meet the following requirements:

[0076] The decorative surface of the FRP bathroom should be smooth and flat, without small holes, cracks, bubbles, burrs, wrinkles, defects, poor curing, poor impregnation, etc., and no glass fiber should be exposed on any surface;

[0077] The back of the FRP bathroom must be flat, without defects, burrs, poor curing, poor impregnation, or cracks;

[0078] The cut section of the FRP bathroom shall not have delamination, burrs, exposed glass fibers, etc.;

[0079] The gel coat and reinforcement layer (fiberglass) of the FRP bathroom are tightly bonded, without delamination or peeling;

[0080] The fiberglass toilet should not have light transmission under strong light;

[0081] The embedded iron and reinforcement of each equipment part should be firmly connected to the FRP bathroom, and must not be loose or fall off. The installation position should be accurate and anti-corrosion and fireproof treatment should be done;

[0082] The inspection door in the FRP toilet has even seams all around, flexible opening and reliable closing. Felt should be installed in the invisible area of ​​the inspection door. There should be no vibration or noise in any part of the FRP toilet when driving.

[0083] After the fiberglass bathroom floor and water tray are manufactured, they must be tested for water leakage;

[0084] Cigarette burn-resistant floor cloth is used in fiberglass bathrooms. It is bonded with glue and sealed around the edges with sealant. The floor cloth is required to be firmly bonded, laid flat, and not warped around the edges.

[0085] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for manufacturing a lightweight toilet module for a high-speed train set, It is characterized in that The following steps are involved: S1. Prepare the resin: first add the flame retardant and stir it with a mixer for a long time until there are no large filler particles in the resin. After preparation, let it stand and exhaust the gas; Before use, add styrene and stir again with a mixer; then add the accelerator and stir thoroughly; When using, add the curing agent for on-site preparation. The amount of curing agent should be added according to the on-site temperature, resin amount and gel time. When preparing, use a standard measuring cup to weigh the curing agent and add it to the resin. Use a glue stick to stir evenly to avoid mixing too much air. It can be used after the curing agent and resin are fully mixed. S2. Cutting felt: Prepare the felt cloth according to the size and shape of the mold, stack the cut felt cloth according to the laying order and the number of pasting layers, and mark them for the convenience of workers to identify and operate; S3. Prepare the mold: clean the mold surface with clean cotton yarn, dip 8# wax with clean cotton yarn and wax evenly from one side of the mold, with a circular motion of 200 in diameter, and apply the wax evenly without omission. After drying for 15 minutes, wipe it clean with cotton yarn; S4, spraying gel coat: spraying thickness is 400μm-600μm wet film, spraying pressure is 0.3MPa-0.6MPa, curing agent ratio is 1.5%-2.0% in winter and spring, and 1.2%-1.5% in summer and autumn; S5. Hand paste forming: Use a brush to apply resin to the untwisted yarn and fill the concave corners of the mold to prevent air holes from being generated when pasting the fiber felt later; lay the fiber layer by layer according to the laying requirements, pay attention to the uniform force when rolling to prevent excessive force from damaging the gel coat layer, and remove burrs and bubbles during curing; paste the reinforcement layer with 2 layers of 450g / ㎡ felt, each layer must be dotted with resin, carefully rolled with a roller, and the bubbles are removed and cured; bond the embedded parts or FRP reinforcements according to the requirements of the drawing, and use transparent sealant for bonding. The gaps around the reinforcements should also be coated with transparent sealant. It is strictly forbidden to fill the gaps with putty to prevent the product from mounting the reinforcement. After curing, paste the embedded parts or FRP reinforcements with two layers of 300g / ㎡ chopped felt strips and cure; S6. Curing and demoulding: The product needs to be heated in a drying room at 30℃-60℃ for at least 3 hours. After reaching a certain hardness, it needs to be taken out of the drying room and aired to room temperature. In order to prevent product deformation, the paste product must be demoulded after curing for more than 24 hours. After the product is demoulded, it must be placed for more than 1 day before it can be cut. When demoulding, use a wooden wedge to pry up the product evenly on all sides. If a metal crowbar is used, the part in contact with the product must be wrapped with cotton yarn to avoid damaging the product. S7. Accessory installation: glue the inserts and reinforcements in the positions required by the drawings. After curing, paste the inserts with two layers of 300g / ㎡ felt and cure; S8, cutting and polishing: Cut, open and drill the product according to the mold line, polish the smooth surface of the product according to the requirements of the drawing, polish the bonding part of the accessories, and polish the back of the product to make sure there are no burrs, bulges and glue drops on the back of the fiberglass parts; the installation surfaces around the top plate, wall panels, etc. should be smoothed, and the back of the pressure strip should be polished smooth as a whole to facilitate bonding and buckling; S9, Surface treatment: Grind the gel coat surface of the product, first use 100# sand disc or 120# dry sandpaper to repair the surface defects, and finally use 180# dry sandpaper to grind until the surface is matte; S10, Inspection transfer: self-inspection, inspection transfer, after passing the inspection, transfer to the painting workshop for painting or transfer to the assembly workshop for installation of accessories; S11. Product assembly: Install the floor connecting beam, polish the installation area on the back of the connecting beam, wash 8*12 oblong holes at intervals of 300mm as glue holes, evenly apply structural glue on the installation area, bond the connecting beam to the back of the floor according to the positioning size, fix it tightly, and evenly drill countersunk holes and screw in 4*16 stainless steel self-tapping screws after the bonding is cured; Installation of skirting board: Use 36# sandpaper to polish the bonding area between skirting board and floor, evenly apply SIKAFLEX-221 sealant on the back of skirting board, use aluminum square tube clamp to fix skirting board to floor, glue each skirting board in turn, and remove the square steel tube clamp after the sealant is cured; During the bonding process of the floor cloth, cut the floor cloth according to the floor cloth sample, polish the bonding area between the floor cloth and the fiberglass, evenly apply the floor cloth adhesive on the bonding surface between the floor cloth and the fiberglass, flatten and compact the floor cloth when the adhesive is no longer sticky, leave a 5mm glue seam between the floor cloth and the fiberglass, apply sealant at the gap after the floor cloth adhesive is cured, and use the floor cloth welding rod to fill the joints between the floor cloths; During the bathroom assembly process, place the bathroom side wall components and the door partition components on the floor in sequence to ensure that the inner wall of the shell and the inner wall of the floor are at the same level. Use a clamp to fix the shell and the floor shell flange, and install 4*20 stainless steel cross slot pan head bolts at intervals of about 150mm. After the installation is completed, remove the clamp, use 5*16 stainless steel cross slot countersunk bolts to fix the door partition installation beam and the floor installation beam, glue the waste exhaust cover and water tray according to the drawing size, fill the gap with resin putty, paste 2 layers of 300 felt on the back, and evenly apply sealant on the shell flange connection; S12, Accessory Installation: Mirror installation, before pasting the mirror, clean the bonding surface with acetone, evenly apply SIKAFLEX-221 sealant, and install the mirror firmly, with uniform flashing around, and the surface and the shell on the same plane; Installation of internal accessories: Mark the positioning dimensions of the coat hook on the shell, drill holes, tap threads, and fix the coat hook to the shell with bolts. It is required that there should be no gaps or skew. Mark the positioning dimensions of the handrail on the shell, drill holes, tap threads, and fix the handrail after installing the fixing seat. Drill holes and tap threads on the shell according to the installation hole positions of the tissue box and toilet paper box, and then fix the tissue box to the shell with bolts (self-tapping screws); Check the door installation, use structural adhesive to glue and fix the door hinge mounting seat, after preparing the gap and plane around the door, mark and glue the hinge according to the required dimensions on the drawing, use bolts to fix the hinge to the hinge mounting seat, and check that the door is on the same level as the shell after installation.

2. A method for manufacturing a lightweight toilet module for a high-speed train set according to claim 1, It is characterized in that In the resin preparation step, the resin is mainly unsaturated polyester resin, and the catalyst added to promote the polymerization and hardening of the resin and the accelerator to promote the catalyst effect cannot exceed the necessary amount.

3. A method for manufacturing a lightweight toilet module for a high-speed train set according to claim 1, It is characterized in that In the hand lay-up step, the reinforcing material is in principle glass fiber, with a single fiber thickness of less than 0.013 mm. Unless otherwise specified, it is an alkali-free material, and the surface treatment is mainly silane treatment.

4. A method for manufacturing a lightweight toilet module for a high-speed train set according to claim 1, It is characterized in that In the hand lay-up step, the gel resin must not shrink or crack during use and must have good weather resistance and good adhesion to the resin layer.

5. A method for manufacturing a lightweight toilet module for a high-speed train set according to claim 1, It is characterized in that In the hand lay-up step, the adhesive used when assembling the materials is an unsaturated polyester resin or an epoxy resin adhesive.

6. A method for manufacturing a lightweight toilet module for a high-speed train set according to claim 1, It is characterized in that In the hand lay-up step, when a flame retardant is used to obtain flame retardancy, the flame retardant may be mixed into the resin within a range that does not affect durability.