108results about How to "Meet the requirements of lightweight design" patented technology

The invention relates to a production process for a car roof, in particular to a production process for manufacturing a roof by a polypropylene and glass fiber plate, which is used for being installedat the top of a car and playing roles of heat and sound insulation and beautification and belongs to the technical field of interior parts of cars. The production process for manufacturing the roof by the polypropylene and glass fiber plate comprises the following steps: (1) laying raw materials: laying base materials formed after polypropylene and glass fiber are compounded on a feed platform; (2) baking: placing the laid base materials into an oven to bake; (3) pressing and molding: placing the shell fabrics and the baked base materials into a die to be pressed, cooled and molded so as to form a semi-finished product; and (4) stamping the semi-finished product: delivering the semi-finished product into a stamping die to stamp.

The invention relates to a method for producing an automotive sound-insulating pad. The method for producing the automotive sound-insulating pad comprises the following steps of: a, laying a raw material, namely laying a thermoplastic felt material on the network chain of an oven; b, baking and softening, namely feeding the thermoplastic felt material into the oven through the network chain of the oven for baking and softening, wherein the temperature of an upper heating zone in the oven is between 230 and 250 DEG C, the temperature of a lower heating zone is between 310 and 330 DEG C, and the baking time is 255 to 285 s; c, performing compression molding, namely performing compression and cooling on the baked and softened thermoplastic felt material to be a semi-finished product, wherein during the compression and cooling molding, the molding pressure is 16 to 17 MPa, the molding time is 90 to 110 s, and the cooling temperature is between 20 and 30 DEG C; d, performing water jet cutting, namely positioning the semi-finished product subjected to the compression cooling, and performing water jet cutting to obtain the required sound-insulating pad, wherein the cutting water pressure is 40,000 to 50,000 psi, and the cutting air pressure is 0.6 to 0.8 MPa; and e, inspecting, namely inspecting the sound-insulating pad, and packing and warehousing. The method for producing the automotive sound-insulating pad is simplified, energy-saving and environment-friendly, the automotive sound-insulating pad has high strength, the production efficiency of the method is high, and the method can reduce labor intensity.

The invention discloses an FSAE racing car aerodynamic suite. The FSAE racing car aerodynamic suite comprises a rear wing (1), a tail-end diffuser (2) and a front nose wing (6) which are in rigidity connection with a car frame (3), wherein the front nose wing (6) is located at the lower portion of the racing car head, and the rear wing (1) and the tail-end diffuser (2) are upper-and-lower arranged and are installed at the tail of the racing car. The FSAE racing car aerodynamic suite can improve the down force of the FSAE racing car greatly, so that a good ground adhesive force is obtained by the racing car, and excellent dynamic property is acquired; the aerodynamic property and handling stability of the racing car can be improved, so that the speed and accelerated speed of the racing car when entering a curve and pulling out of the curve are greatly improved, and excellent turning driving property is obtained; thereby, the FASE racing car can acquire outstanding grades in the competition items of high-speed obstacle avoidance, eight-character circling and the like, and the FSAE racing car aerodynamic suite further has the advantages of being light in weight, simple in structure, convenient to assemble and disassemble, reliable in property, good in practicability and the like.

The invention relates to a production process of a top lining, in particular to a wet production process of a low-density soft polyurethane foam top lining. The production process can be applied to alow-density soft polyurethane foam top lining which is arranged on the top of an automobile and has the effects of heat insulation, sound insulation and beautification, and the production process belongs to the technical field of manufacture of automobile interior parts. According to the technical scheme of the invention, the wet production process of the low-density soft polyurethane foam top lining comprises the following steps: (a) rubber rolling: rolling rubber on the upper surface and the lower surface of a polyurethane material of the top lining by adopting a rubber rolling mill; (b) glass fiber scattering: cutting glass fibers by adopting a cutting machine; (c) pressing to mold: pressing a primary product of the soft polyurethane foam top lining of the step (b) in a mould to press the primary product by utilizing a pressing machine to form a molded semi-finished product; (d) cooling and molding for the first time: cooling the molded semi-finished product to normal temperature, and molding to form a set semi-finished product; (e) jointing surface materials; (f) cooling and molding once again; (g) cutting by a water jet; and (h) mounting accessories.

The invention relates to a production method for vehicle top wet processing, in particular to a vehicle top which is mounted at the top part of the vehicle, plays the roles of heat isolation, sound isolation and beautification as well as belongs to the technical field of the interior decorating piece of the vehicle. The invention is characterized by selecting a PU material as the base material of the top, heating, rolling glues on the front surface and the back surface as well as spraying soft water on the PU material; laying a combination layer and cutting a roll type material; then pressing and forming, cooling and shaping, cutting by a water cutter and packaging into a box and warehousing after inspection. The production method of the invention realizes the performance indexes of the sound suction, heat resistance, light weight and high intensity of a top assembly, reaches the international top level of Grade three, greatly reduces the weight of the top, meets the requirements of the light weight design of the whole vehicle; during the working procedure of rolling glues, the PU material is adopted to carry out flow operation of glue rolling on the front surface and back surface, heating and shaping; the technique is stable; the rigidness of a product is high; besides, the product can not be broken or droop; no semi-finished products are accumulated during the process, thus saving the manufacturing cost; the whole production process of the product does not generate harmful matters; besides, the product belongs to environment-friendly product.

The invention relates to a method for producing an automotive rear shelf. The method is characterized by comprising the following steps of: (1) heating: hanging polypropylene sheets in a two-layer drying oven and heating, wherein the temperature of an upper-layer drying oven of the two-layer drying oven is between 240 and 260 DEG C; the temperature of a lower-layer drying oven of the two-layer drying oven is between 325 and 345 DEG C; and the heating time is 85 to 95 seconds; (2) pressing and forming: laying a fabric on two layers of PP sheets flatly, and pressing and forming the fabric in a die to obtain a half-finished product, wherein the pressure during pressing and forming is 70 to 90kg / cm<2>, and the forming time is 60 to 70 seconds; (3) cooling and shaping: cooling and shaping the half-finished product at the normal temperature, wherein the cooling time is 30 to 50 seconds; (4) installing accessories: installing the accessories on the half-finished product to obtain an automotive rear shelf finished product; and (5) examining and packing, wherein the fabric is a non-woven fabric, and the PP sheets are PP wood powder sheets with glue. The method ensures the performance indexes of light weight, high strength, difficult contraction distortion and the like of a rear shelf, greatly reduces the weight of the rear shelf, and meets the requirement for lightweight vehicle design; and as the material has a double-layer wood powder sheet structure, the product is fuller.

The invention relates to a one-step forming wet production process of an automobile calash, which comprises the steps of rolling plastic on a calash PU matrix, spraying demineralized water, combining a base material, press-forming, cooling, shaping, carrying out waterjet cutting, assembling accessories, inspecting, packaging and the like. The one-step forming wet production process eliminates the step of secondarily jointing a fabric with the base material in the prior art and directly coats the fabric on the base material for one-step press-forming, thereby reducing the process steps, shortening the operation time and improving the process conditions. The produced calash can lead the sound absorption to achieve the grade 3 international leading level, greatly reduce the weight of the calash and meet the requirement on lightweight design of a whole automobile; the product has high rigidity, and can not be broken off or droop; the product is produced by adopting an automatic production line during the whole production process, thereby greatly reducing the labor intensity of workers during the production process and improving the production efficiency; and the product does not produce hazardous substances during the whole production process, thereby being environment-friendly and pollution-free.

The invention relates to a method for producing a decorating part of a car boot cover, which belongs to the technical field of interior parts of cars. A low-density PP plate molding material is mainlyadopted as a decorating part basal body of a boot cover and is subjected to press molding, water-jet cutting and inspection to obtain a finished product. The invention solves the problem of meeting the performance indexes of sound absorption, heat resistance, light weight, high strength, and the like of a decorating part assembly of the boot cover and the three-grade international advanced level,greatly reduces the weight of the decorating part of the boot cover, meets the requirement on the lightweight design of the whole car and has stable molding process; a product has high rigidity and can not be broken and sagged; the product is produced by an automatic production line in the whole production process, thereby greatly reducing the labor intensity of workers in the production processand improving the production efficiency; no semi-finished product is stacked in the process, and the manufacture cost is saved; and the product does not generate harmful substances in the whole production process and belongs to an environmental-friendly product.

The invention relates to a method for producing a sunroof window visor for an automobile. The method comprises the following steps: substrate PU material pretreatment, sunroof window visor material combination and laying, pressure molding, cooling shaping and waterjet cutting, and the step of substrate PU material pretreatment comprises a substep of rubber rolling and a substep of softened water spray. The method solves the problems of performance indices of sound absorption, heat resistance, light weight and high strength of a sunroof window visor assembly; the weight of the sunroof window visor is greatly reduced, and the requirement on lightweight design of a complete automobile is met; during the PU material pretreatment process, the flow operations of heating of the double-sided PU rolled rubber and softened water treatment are adopted, the technology is stable, the operation security and accuracy are guaranteed, and simultaneously, the operation efficiency is improved; the rigidity of the product is high, without break and sagging; the stack of half-finished products can not happen during the process, and thus the production cost is saved; no harmful substance is generated during the entire production process.

The invention belongs to the technical field of automatic hole production, and concretely relates to a helical milling device and a helical milling method. The helical milling device comprises an autorotation shaft, an eccentric adjusting shaft, a revolution shaft, a revolution belt pulley, an adjusting belt pulley and a control system, and further comprises an adjusting shaft detection grating ruler and a revolution shaft detection grating ruler, and full-closed loop detection is performed on the rotation angle of the eccentric adjusting shaft and the synchronization of the revolution shaft and the eccentric shaft. The revolution shaft, the eccentric adjusting shaft and the autorotation shaft of the device are provided with raceways, rolling elements are clamped in the raceways, and the self race ways and the rolling elements are adopted to substitute standard bearings, so problems of low rotating angle adjusting precision of existing helical milling devices and poor rotating consistence of the eccentric adjusting shaft and the autorotation shaft, and problems of overlarge use load of a hinged arm robot and a machine tool end and error accumulation caused by nesting of multilayerstandard bearings, caused by large size and large mass of the device are solved.

The invention relates to a method for manufacturing a coatrack of an automobile, which pertains to the technical field of automobile interior trim parts; the method comprises the steps: a natural fiberboard is taken as a board body of the coatrack; press forming, cool setting, fabric attaching, die cutting and accessory mounting are carried out to the board body of the coatrack. The board body is claimed as a finished product after passing the examination. The method of the invention achieves the performance indexes of a coatrack assembly, such as heat resistance, light weight, high strength, low contractility and low deformability and reaches the Grade 3 of the international leading level, thereby reducing the weight of the coatrack and meeting the design requirement of light weight of the whole automobile; the process adopts the double-oven suspension heating and molding line production, with stable technique; a semi-automatic assembling fixture is adopted in the installation, thereby ensuring safe accuracy and improving working efficiency. No semi-manufactured goods accumulate during the course so that the manufacturing cost can be saved. No harmful substance is generated in the whole production process so that the coatrack produced by the method of the invention is environment-friendly.

The invention relates to a brake-by-wire system capable of simulating controllable pedal feeling. The specific structure of the system comprises a brake main cylinder, a main cylinder driving device,a brake wheel cylinder, a liquid storage tank, a secondary main cylinder, a pedal push rod, a pedal feeling simulator and an electronic control unit (ECU), the brake system has three brake functions of conventional brake, active brake and failure backup, and the conventional brake comprises three processes of pressurization, pressure maintaining and pressure reduction. Decoupling of a brake pedaland a brake wheel cylinder is realized, and various complex pedal counterforces can be simulated by adjusting the reversing valve pedal feeling simulator so as to match drivers of different driving styles; a pedal travel sensor can realize identification of the braking intention of a driver; and a linear pressure regulating valve can achieve accurate control over the pressure of the brake wheel cylinder.

The invention relates to a method for producing a front wall sound insulation pad of an automobile driving cabin, belonging to the technical field of automobile interior part processing. The method provided by the invention comprises the following steps of: placing a hard thermoplastic felt on a bottom layer, placing a hot melt film on a middle layer, placing a soft thermoplastic felt on an upper layer, and paving the raw materials on a net chain of an oven; feeding the raw materials into the oven through the net chain of the oven for drying and softening, and sufficiently dissolving the hot melt film on the middle layer; placing the materials in a mould after drying the materials in the oven, and pressing and cooling the materials in the mould to form a semi-finished product; locating the semi-finished product, and executing water jet cutting on the semi-finished product to obtain the required front wall sound insulation pad of the driving cabin; and boxing and warehousing after checking up. According to the method provided by the invention, the performance index requirements, such as sound absorption, sound insulation, environment friendliness, light weight and the like, of the front wall sound insulation pad assembly of the driving cabin can be satisfied; the weight of the front wall sound insulation pad of the driving cabin is greatly reduced; and the requirement for integral lightweight design is satisfied.

The invention relates to a wet process production process of polyurethane foaming ceiling local reinforcement, comprising the following steps of rubber rolling, glass fiber felt paving, compression moulding, cooling setting, shell fabric adhering, cooling setting, water cutting and the like. A ceiling manufactured by the method can achieve greatly reduced weight, meets the demand of the light design of the finished automobile, has good rigidity and can prevent products which are about 3m long from being broken or hanging down, and moreover, harmful substances are not generated in the whole production process.

The invention relates to a method for producing a fender of a vehicle, belonging to the technical field of automotive outer decoration processing. According to the technical scheme provided by the invention, the method for producing a fender of a vehicle comprises the following steps: a, softening treatment, wherein a composite felt is baked and softened in an oven, the temperature of an upper heating area in the oven is between 300 and 360 DEG C, the temperature of a lower heating area in the oven is between 400 and 450 DEG C, and the composite felt is baked in the oven for 65 to 95 seconds; b, compact forming, wherein the softened composite felt is compacted into a semi-finished product, the time for compact forming is between 50 and 70 seconds, and the compact pressure is between 5 and 8 MPa; c, water-jet cutting, wherein the semi-finished product obtained in the step (b) is cut by water jet to obtain a required fender, wherein the cutting water pressure is between 40,000 and 50,000psi, and the cutting air pressure is between 0.6 and 0.8MPa; and (d), inspection, wherein the fender obtained in the step (c) is inspected, and is packaged into a carton and put in storage. The method is easy to operate, can produce the fender with high strength and light weight, and is economical and environment-friendly.

The invention relates to a production method of a car sun visor, which is characterized in that: the production method adopts the following technological steps: firstly using a hot-melt adhesive for bonding an iron frame with corrugated paper together; further using a double-sided adhesive tape for adhering foam cotton on two sides of the corrugated paper; utilizing the high-frequency welding wayfor wrapping an inner core material in a PVC surface; utilizing an ultrasonic device for riveting a sleeve; mounting a rotating arm; and forming a finished product after mounting the rotating arm. Theproduction method solves the performance indexes of high cost, unrecoverable property, easy contamination when meeting dust, difficult cleaning of dirt, lightweight and the like of the sun visor assembly, achieves the level 3 of the international leading level, greatly reduces the weight of the sun visor and meets the requirements on the lightweight design of a whole car; materials adopted for the PVC surface, the corrugated paper, the foam cotton and the iron frame are recoverable; and the high-frequency welding and the ultrasonic riveting process do not produce pollution or harmful substances, thereby being in line with the requirements of environment-friendly products.

The invention discloses a production method of an integrated car carpet. The production method comprises the steps of laying of shock pad raw materials, drying of the shock pad raw materials, compression molding, laying of a surface carpet and a semi-finished product of shock pad below the carpet, drying of the surface carpet, fit molding, water cutting and the like. The integrated car carpet produced by the method disclosed by the invention meets the requirements of performance index, such as vibration reducing, environment protecting and lightening; the weight of the integrated car carpet is greatly reduced, and the requirement of the whole car lightening is met; the cost of raw materials is reduced due to the selection of thermoplastic felt and a PET and EVA compounded surface carpet, so that the selectivity is high; in the process of material processing, a hot air box is adopted for heating, a mold is adopted for compression molding, a water jet scalpel is adopted for cutting, the technology is stable, the safety and the accuracy of the operation are ensured, and the working efficiency is improved; excess materials of the product are less; no semi-finished products are stacked in the process, and the manufacturing cost is reduced; and no harmful substance is generated in the whole production process of the product.

The invention discloses a production method of a multilayered structure under-car carpet acoustic shock absorption pad and belongs to the technical field of production of car parts. The production method comprises a raw material laying step, a steaming hot press molding step, a cooling forming step and a water jet cutter cutting step. The multilayered structure under-car carpet acoustic shock absorption pad produced by the production method can replace a heavy coating composite polyurethane foaming product produced by the traditional technology; compared with the heavy coating composite polyurethane foaming product produced by the traditional technology, the multilayered structure under-car carpet acoustic shock absorption pad has the advantages of environment protection, no odors and harmful substances, recycling, light weight, simple manufacturing process and higher dissipation in the acoustic aspect; while the design requirement of light weight of the whole car is met, selectivity is realized; in the material machining process, steaming hot press molding, tool cooling forming and water jet cutter cutting are adopted, the process is stable, and the safety and accuracy of operation are guaranteed; the operation efficiency is improved; excess materials of the product are fewer and recycled so that the manufacturing cost is saved; and no harmful substances and waste materials are generated in the whole product production process.

The invention belongs to the technical field of composites and relates to a preparation method of an electromagnetic shielding honeycomb core material. According to the method, a graphene / ferrite hybrid material is prepared, then graphene / ferrite hybrid granules are uniformly attached to a fabric carrier through magnetic deposition, and graphene / ferrite hybrid granular electromagnetic shielding fabric is formed; an electromagnetic shielding interlayer is prepared from prepreg, adhesive films and the electromagnetic shielding fabric; finally, the electromagnetic shielding interlayer and a honeycomb core material are composited through adhesion to form a C-sandwich electromagnetic shielding honeycomb structure. According to the technical process, related mature technologies are integrated, and low-cost design and manufacture and technology-integrated comprehensive utilization of the electromagnetic shielding honeycomb core material are realized.

The invention discloses a hierarchical origami-shaped automobile collision energy-absorbing structure. The hierarchical origami-shaped automobile collision energy-absorbing structure comprises a plurality of energy-absorbing layers and an origami-shaped induction tube, wherein the origami-shaped induction tube is a Z-shaped folded metal tube formed by folding a metal sheet through a Miura foldingmethod; adjacent energy-absorbing layers are connected with each other through the folded paper-shaped induction tubes; the plurality of energy-absorbing layers comprise a honeycomb energy-absorbing layer and a porous material energy-absorbing layer coaxially distributed from top to bottom; the honeycomb energy-absorbing layer comprises two first metal plates and a metal material with a special-shaped honeycomb structure filled between the two first metal plates; and the porous material energy-absorbing layer comprises two second metal plates and a porous metal material filled between the twosecond metal plates. The hierarchical origami-shaped automobile collision energy-absorbing structure has good dynamic performance and safety; and sufficient strength and energy-absorbing are ensured by using aluminum alloy, titanium metal and porous metal while having very light weight

The present invention relates to automobile inner decoration technology, and is especially automobile ceiling producing process. The present invention adopts low density foamed polyurethane material as the base material, and the automobile ceiling producing process includes the steps of rolling glue, spraying softening water, pressing to form, cooling to fix, adhering facing material, cooling to fix for the second time, cutting with water cutter, mounting fittings and inspection. The automobile ceiling assembly has high performance and light weight.

The invention relates to a production method for an automobile engine compartment heat-insulating cushion and belongs to the technical field of processing of automobile interior ornament. The production method comprises the following steps: paving raw materials, placing semi-curing reconstituted cotton into a bottom layer, and placing black non-woven fabric on an upper layer; placing the paved raw materials into a die and performing hot-press forming to obtain a semi-finished product; placing aluminum foil on the surface of the product along with the shape of the product and performing hot-press forming again to obtain a semi-finished product; placing the formed semi-finished product into a cooling jig, naturally cooling and sizing; positioning the semi-finished product and performing water cutting to obtain the required engine compartment heat-insulating cushion; and after inspecting, placing the products into boxes and placing into a storage. By the method, the problems about the performance indexes such as sound absorption, sound insulation, environmental protection, light weight and the like of the engine compartment heat-insulating cushion assembly are solved; the weight of the engine compartment heat-insulating cushion is greatly reduced; and the requirement of the whole automobile on the lightweight design is met.

The invention relates to a production technology of an automobile seat decorative cover. The production technology comprises the steps as follows: a seat decorative cover base material is placed in an electrical heating oven to be heated, wherein the temperature of the upper oven of the electrical heating oven is controlled within 310-330 DEG C, the temperature of the lower oven of the electrical heating oven is controlled within 340-360 DEG C, the heating time is controlled within 90-100 seconds; the heated seat decorative cover base material is laid between an upper die and a lower die of a forming machine, wherein the temperatures of the upper die and the lower die of the forming machine are both controlled within 3-7 DEG C; the forming machine is operated to obtain a semi-finished automobile seat decorative cover, wherein the forming pressure is controlled within 18-20 MPa, and the forming time is controlled within 55-65 seconds; burrs on the edge of the semi-finished automobile seat decorative cover are removed to obtain the finished automobile seat decorative cover. The production technology adopts PP / PET composite material heating and mold cold-press molding and is free from addition of any chemical composition; the production technology produces no poisonous substance in the whole production process and belongs to an environment-friendly technology.

The invention discloses a wet-type rotary vane electric vacuum pump for an automobile, which comprises a pump body assembly, wherein the pump body assembly comprises a rear end cover and a supporting seat which are fixedly connected; the supporting seat is fixedly connected with a cylinder body through a cover plate and a bottom plate; the inside of the cylinder body is eccentrically provided with a rotor; one end of a rotating shaft of the rotor is connected with the cover plate and the other end of the rotating shaft of the rotor runs through the bottom plate and the supporting seat sequentially for through connection; the supporting seat is provided with a pumping hole E; the top of the cylinder body is provided with an exhaust port F; the rotor is adjustably connected with two vanes; a spring device is arranged in the rotor, so that end parts of the vanes are always pressed against the inner wall of the cylinder body; an air cavity A, an air cavity B and an air cavity C are formed among the vanes, the rotor and the cylinder body; and the air cavity A corresponds to the pumping hole E, and the air cavity C corresponds to the exhaust port F. The wet-type rotary vane electric vacuum pump effectively meets the vacuum demands during the repeated braking of vehicles under the condition of idle speed, and the response speed is quick; and simultaneously, the vacuum pump is provided with a vacuum pump oil-way circulation, and vacuum pump oil is attached to the cylinder body, the rotor and vane surfaces uniformly with the vanes, so that operating noises are reduced effectively, and the operating reliability is improved.

The invention belongs to the field of metal materials and relates to the field of preparation of aluminum magnesium alloys, in particular to an aluminum magnesium alloy for casting a two-breadth-typesteering wheel framework and a preparation method thereof. The alloy comprises the following components in percentages by weight: 4.9-5.4% of Mg, 1.8-2.3% of Si, 0.6-1.0% of Mn, 0.07-0.10% of Ti, 0.025-0.035% of V, 0.003-0.004% of Be and the balance of Al; impurity elements are controlled as follows: less than or equal to 0.13% of Fe, less than or equal to 0.03% of Zn, less than or equal to 0.01%of Cu, less than or equal to 0.0005% of Cr, less than or equal to 0.001% of P, less than or equal to 0.0005% of Na, less than or equal to 0.0005% of Ca, less than or equal to 0.01% of Li and the balance of Al.

The invention relates to a production method of a car engine compartment cover assembly. An engine compartment cover inner plate finished product can be obtained through the steps such as measuring and cutting of sheet stock, pavement of raw materials, hot pressing forming, mold stripping of a semifinished product, cooling stereotyping and blank processing, and an engine compartment cover outer plate finished product is obtained through the steps such as measuring and cutting of sheet stock, pavement of raw materials, hot pressing forming, mold stripping of a semifinished product, cooling stereotyping and blank processing; and a car engine compartment cover assembly finished product is obtained by assembling and splicing the engine compartment cover inner plate and outer plate. The engine compartment cover assembly produced through the method has the advantages that performance indexes such as sound insulation, environmental protection and miniaturization can meet the requirement that no accumulation of semifinished products in the entire production process, and the manufacturing cost is saved; and the entire production process of the product is free from producing harmful substances.

The invention relates to a method for producing an automobile front-wall sound-insulating pad, belonging to the technical field of automobile inner ornament processing. The method comprises the following production steps of: piling up a raw material on a loading worktable, and placing the raw material on a baking box network chain by using a material sucking mechanism; conveying the raw material into a baking box by using a rotary network chain conveyer, and performing baking softening on the raw material; paving the raw material subjected to the baking softening on a mould by using the rotary network chain conveyer, pressing the raw material by using an upper pressing frame of the mould, performing vacuumizing adsorption and cooling molding to obtain a semi-finished product; positioning the semi-finished product, and cutting the semi-finished product by using a water knife to obtain the needed front-wall sound-insulating pad; and boxing up and warehousing the front-wall sound-insulating pad after inspection. By using the method provided by the invention, the requirements on performance indexes such as sound insulation, environmental protection, lightweight and the like of a front-wall sound-insulating pad assembly are met, the weight of the front-wall sound-insulating pad is greatly reduced, and the requirement on an entire automobile lightweight design is met.

The invention relates to a method for producing a light automobile acoustic carpet, and belongs to the technical field of automobile part production. The light automobile acoustic carpet is obtained through paving, adsorption forming and water jet cutter cutting of an acoustic shock pad surface layer below the carpet, paving, temperature drying and pressing forming of an acoustic shock pad base material below the carpet, and paving, temperature drying, attaching forming and water jet cutter cutting of a surface carpet and a semi-finished acoustic shock pad below the carpet. The light automobile acoustic carpet produced through the method meets the index requirements of performance such as shock absorption, environmental friendliness and lightness; the weight of the automobile acoustic carpet is greatly reduced, and the requirement for the whole automobile light design is met.

The invention discloses a production method of an automotive cockpit front wall sound insulation pad. The production method includes the following steps: hard layer thermoplastic felt is arranged at the bottom layer, a soft layer thermoplastic felt is arranged at the top layer, and the hard layer thermoplastic felt and the soft layer thermoplastic felt are flatly laid on a net chain of an oven; the hard layer thermoplastic felt and the soft layer thermoplastic felt on the net chain of the oven are sent in the oven to be dried and softened; the dried and softened hard layer thermoplastic felt and the dried and softened soft layer thermoplastic felt are placed in a mold to be pressed and cooled to form a semi-finished product; and the semi-finished product is positioned on a water jet cutting device to perform water jet cutting so as to obtain a finished product of the automotive cockpit front wall sound insulation pad. The production method of the automotive cockpit front wall sound insulation pad solves the problem of performance index of sound absorption, sound insulation, environmental protection, light weight and the like of the cockpit front wall sound insulation pad, greatly reduces weight of the cockpit front wall sound insulation pad, meets requirements for light weight design of a whole vehicle, uses the hard layer thermoplastic felt and the soft layer thermoplastic felt as raw materials, reduces cost, has more selectivity, is free of semi-finished product accumulation on the way, saves manufacturing cost, and is free of generation of harmful substances in a whole production process of the product.