109 results about "Forming pressure" patented technology

The invention relates to the technical field of parameter optimization, in particular to a plastic mold forming parameter optimization method and system based on big data, and the method comprises the following steps: collecting pressure data, calculating an acceleration sequence, recognizing a peak window, matching a pressure-temperature ratio, and building a combined cluster to obtain an optimization result set. According to the method, a speed increasing sequence is constructed based on the die cavity pressure change rate, a high-dynamic section is screened through a peak value ratio, automatic identification of an effective forming section is achieved in combination with continuous ratio stability judgment, forming pressure, die temperature and a cooling time sequence are collected to construct a parameter combination sequence, trend consistency is compared, and available combinations are screened; the parameter acquisition granularity, the process identification precision and the parameter group suitability are obviously improved, the problems of subjective interference and error accumulation in the parameter configuration process are effectively avoided, the objective quantitative analysis capability of the forming process state is enhanced, and the accuracy of the forming process state is improved. And the plastic mold forming process stability and the parameter configuration efficiency are improved.

The invention relates to a fiber composite material uniform compaction device and a compaction method. The compaction device comprises a sealing gasket, a lower mold plate, a heating and cooling channel, an upper mold plate, a metal film, an oil pump, a base and the like, forming surfaces are arranged on the two opposite surfaces of the lower mold plate and the upper mold plate, and fiber prepreg is laid on the forming surfaces; the metal film is located on the lower side of the upper die plate, a metal bag cavity is formed between the metal film and the upper die plate, and the oil pump is connected with the metal bag cavity and fills oil into the metal bag cavity to generate forming pressure. The lower die plate is fixed to the base, and heating and cooling channels are arranged in the upper die plate and the lower die plate. The interior of the metal bag cavity is pressurized through the oil pump, uniform pressure is applied to all the surfaces of the fiber prepreg through expansion of the metal bag cavity, and therefore the problems that a traditional hard mold cannot apply uniform pressure to the curved surface and a soft mold cannot be attached to a blank in the whole process, so that a fiber composite material is not compacted sufficiently are solved.

An electrically-assisted tooth-shaped rolling process and device for preparing a gradient ultrafine-grained sheet is provided. A rib-forming pressure roller, a rib-flatting pressure roller and a straightening pressure roller are adopted to sequentially roll relative to a surface of a sheet under a preset pressing force. The surface of the sheet is driven, under a rib forming process, to generate large deformation in micro-area to crush and refine grains, and under a rib flatting process to generate reverse large deformation in micro-area. Large deformation areas in the rib forming process and the rib flatting process are staggered to further crush and refine the grains. A cold straightening process drives the sheet to be restored to an original shape, so that the sheet becomes the gradient ultrafine-grained sheet with a decreasing grain size gradient from an interior to a surface layer.

The invention discloses a moisture-proof corrugated paper generation method and system based on machine vision. Humidity distribution data are obtained through image acquisition equipment, uniformity deviation characteristics are extracted through an image processing algorithm and input into an intelligent analysis model, and if deviation exceeds a threshold value, a coating thickness adjusting signal is output to determine the spraying amount of a moisture-proof agent; then, on the basis of the spraying amount, a structural integrity image in the forming stage is collected, deformation parameters are extracted, a production parameter optimization instruction is generated through a feedback verification unit in combination with the effect mapping relation model, an execution mechanism is driven to adjust the pre-drying temperature and the forming pressure, and meanwhile finished product moisture resistance detection data are obtained; finally, a closed-loop regulation and control cycle is formed through detection data and deviation characteristics, model parameters are optimized, deviation changes are continuously monitored, the mapping model is dynamically adjusted to adapt to different paper types, intelligent real-time optimization is achieved, and the production efficiency and the moisture-proof performance stability are improved.

The invention relates to a thermoforming method, in particular a press forming method, for forming structures, in particular microstructures or nanostructures, in a surface (2) of a substrate (3) by means of a forming die (4). To this end, the surface (2) of the substrate (3) is locally heated by means of laser radiation (5) above a softening temperature, and then a negative structure of the press surface (6) of the forming press (4) is embossed into the deformable glass frit at a set pressure by means of a forming force (F). In order to maintain the heat input even during the forming process, in particular to ensure that the temperature is constant throughout the forming process and that the temperature distribution is uniform over the entire die surface (6), the forming die (4) and the die surface (6) are made of a material which is wavelength transparent to the laser radiation (5).

The present invention discloses a preparation device and method for high-strength composite lightweight building blocks for load-bearing structures, comprising a bottom cladding material distribution device, a horizontal rectangular vertical extrusion device, a horizontally movable embryo core feeding device, a side gap primary cladding material distribution device, a horizontal rectangular annular vertical compaction mold, a side gap secondary cladding material distribution device, a horizontal rectangular annular vertical secondary compaction mold, etc.; the method comprises foaming molding of core material raw materials, dehydration and initial curing of the whole embryo, embryo core cutting and molding, metering and premixing of cladding material, atomization and water addition of cladding powder material, etc.; the present invention arranges the core material cladding process into three steps, the first step is vibrating and cladding the bottom surface of the mold, the second step is vibrating and filling and compacting the side gap, and the third step is filling the cladding material again while vibrating. The step-by-step cladding process can make the cladding around the core material uniform and dense, avoid the defect of different density of the peripheral cladding material products caused by one or two pressure molding, and realize industrial production.

The present application relates to a kind of preparation methods of peelable polyimide laminated film, which is made of multiple polyimide composite films by hot pressing forming, wherein the polyimide composite film is composed of polyimide film and adhesive, by controlling the thickness of adhesive layer, forming temperature, forming pressure and holding time, the peel strength of laminated film is controlled, and the peel strength controllable polyimide laminated film is obtained.Compared with the prior art, the present application effectively controls the peel strength of laminated film, and obtains a peelable polyimide laminated film with controllable peel strength.The method can control the peel strength of laminated film according to the use requirement, is easy to process and use, has low requirement for equipment, is easy to implement, and can be used for preparing peelable gasket.

This utility model discloses a novel surface co-extrusion device for heating pipes with an oxygen barrier layer, relating to the field of heating pipe manufacturing technology. The utility model includes a conveying chamber, a cooling jacket, and a discharging sleeve. A forming sleeve is fixed to one end of the conveying chamber, a cooling jacket is fixed to the end of the forming sleeve away from the conveying chamber, a heat insulation plate is fixed to the end of the cooling jacket away from the forming sleeve, and a discharging sleeve is fixed to the end of the heat insulation plate away from the cooling jacket. A homogenizing plate is fixed in the middle of the conveying chamber, and a central shaft is fixed through the center of the homogenizing plate along its central axis. The central shaft is fixed inside the conveying chamber. Homogenizing holes are uniformly opened throughout the homogenizing plate. An inner filter sleeve is fixed inside the discharging sleeve. This utility model, by setting up the conveying chamber, cooling jacket, and discharging sleeve, solves the problem that during the surface co-extrusion of heating pipes with an oxygen barrier layer, the high surface temperature of the pipe base material and the high fluidity after bonding with the oxygen barrier layer cause uneven thickness of the oxygen barrier layer, and the insufficient uniform forming pressure of the heating pipe.

The utility model belongs to the technical field of concrete detection, and particularly relates to a high-strength concrete test piece pressure forming device which comprises a base and a rotating supporting piece arranged on the base, an extrusion forming piece is arranged on the rotating supporting piece, hydraulic push rods are arranged on the extrusion forming piece in an up-down corresponding mode, a fixing plate is arranged on the base, and the fixing plate is arranged on the base. The hydraulic push rod is arranged on the fixing plate, a torsional spring automatic rebounding mechanism is arranged on the side face of the base, an inner clamping plate is arranged on the rotating supporting piece, the inner clamping plate is arranged on a rebounding rod, and the rebounding rod is arranged on the torsional spring automatic rebounding mechanism. By rotating the supporting piece and the extrusion forming piece, the device can have a rotating switching function, so that pressure forming operation can be conveniently carried out on concrete of different specifications, and when the pressure forming piece is rotated and switched to cope with concrete pieces of different specifications, the efficiency is improved, and the labor intensity of workers is reduced. And the preparation requirements of diversified test pieces in laboratories or industrial production can also be met.

The invention discloses a high-flux composite material preparation mold. The high-flux composite material preparation mold comprises a bottom mold and a plurality of forming modules mounted on the bottom mold, each single forming module comprises a resin mold, a pressurizing module and a heating module; the heating module is installed on the bottom die, the resin die is arranged above the heating module, a forming area is arranged in the resin die, a prepreg of a composite material is arranged in the forming area, the pressurizing module is arranged above the forming area of the resin die, the pressurizing module is used for applying pressure to the prepreg, and the heating module is used for heating the prepreg; the pressurizing modules in the forming modules are mutually independent, and the heating modules in the forming modules are mutually independent. The invention further discloses a preparation method based on the mold. Different forming pressures and forming temperature-time curves can be provided for a plurality of sample pieces, the plurality of composite material sample pieces are formed at the same time, a large number of composite material samples are synthesized in a parallelization mode, and the high-throughput preparation function of small-sample-size composite materials is achieved.

The present invention provides a pressure molding device comprising a dimension measurement portion that is easy to apply in a die and capable of reliably measuring dimensions. One embodiment provides a pressure molding device comprising an upper die and a lower die arranged in a first direction, wherein the upper die comprises a first cam portion which allows, as one of the upper die and the lower die moves in the first direction, part of the lower die to move in a second direction that is different from the first direction, and a material fixing portion which fixes a material along with a material support portion according to the movement in the first direction, and the lower die comprises a second cam portion corresponding to the first cam portion, the material support portion supporting the material, and a molding portion which is moved along with the second cam portion and molds the material. In addition, the pressure molding device further comprises a dimension measurement portion which is located at the lower portion of the molding portion and is movable in the second direction.

The invention belongs to the technical field of foamed polypropylene, and provides foamed polypropylene with high compressive strength and rebound resilience and a molded part thereof. The foamed polypropylene beads are prepared from composite particles with a core layer and a skin layer through carbon dioxide primary foaming and hot air secondary foaming, the core layer comprises high-melt-strength polypropylene, aluminum borate whiskers treated by a coupling agent, a hydrogenated styrene-ethylene-butylene-styrene block copolymer, polypropylene grafted glycidyl methacrylate, a cell nucleating agent and a lubricant, and the skin layer comprises low-melting-point polypropylene and a lubricant. When the low density is 18-20 g / L, the 25% compression strength of a molded part is not lower than 125 kPa, the 25% compression strength of the molded part is not lower than 350 kPa when the density is 40-44 g / L, the 25% compression strength of the molded part is not lower than 800 kPa when the density is 80-85 g / L, the 25% compression permanent deformation of the molded part is not higher than 10%, and the molded part has low molding pressure and excellent appearance; the method is suitable for the application fields of automobile bumper core materials, high-end protective packaging, new energy battery turnover trays and the like.

The utility model discloses a friction-free turning and bending structure for automobile thick-material products, which belongs to the technical field of stamping dies and comprises a lower die holder and a punch, the lower die holder is provided with a pressing portion, a turning and bending mechanism is arranged on the side of the pressing portion and comprises a turning base, a forming punch, a lever component and a pressing block, and the forming punch is arranged on the turning base. The overturning base is fixed to a lower die base, the forming punch is installed on the overturning base in the mode of overturning around a horizontal transverse shaft, the forming punch is provided with a forming pressing face, the lever component is installed on the overturning base in the mode of overturning around the horizontal transverse shaft, the pressing block is in linkage with the punch, and the pressing block downwards abuts against the lever component and pokes the forming punch through the lever component. The forming punch is connected with a spring, and the spring applies elastic force to the forming punch to enable the forming pressing face to be away from the pressing part. According to the bending structure, the appearance quality, the bending stability and the size precision of a hinge product are improved, the service life of a die is prolonged, and loss and cost in the production process are reduced.

The invention relates to the field of container corrugated plate machining, in particular to container corrugated plate pressure forming equipment and a using method thereof.The container corrugated plate pressure forming equipment comprises a forming machine support, a cleaning mechanism, a hydraulic forming mold, a hydraulic pressure forming mold, a hydraulic pressure forming mold, a hydraulic pressure forming mold pressing mechanism and a hydraulic pressure forming mold pressing mechanism, the cleaning mechanism is movably installed between the two sides of the inner wall of the cleaning groove and used for cleaning foreign matter on the surface of the plate, and the flow dividing mechanism is movably installed in the middle of the forming machine support, matched with the cleaning mechanism in a transmission mode and used for removing unqualified plates. According to the pressure forming equipment for the corrugated plate of the container, the wedge-shaped scraping plate, the L-shaped guide groove, the guide rod and other components are used in cooperation, when abnormal protrusions exist on the surface of a plate, the linear conveying motion of the plate can be converted into the transverse separation motion of the wedge-shaped scraping plate, and therefore unqualified plates can be effectively detected; and resource waste caused by pressure forming of unqualified plates is avoided.

The invention discloses a buccal tablet and a preparation method thereof, the buccal tablet comprises at least one load layer and at least one film-shaped functional layer which are stacked in the thickness direction, and the adjacent load layer and / or functional layer are combined through a pressure forming process; the film-like functional layer comprises a film-forming agent and a functional substance; the functional substance comprises at least one of an active agent and a flavoring agent; the loading layer is made of an insoluble sheet-shaped base material; the preparation method comprises the following steps: obtaining a film-like functional layer, wherein the film-like functional layer comprises a film-forming agent and a functional substance; obtaining a load layer, wherein the load layer is selected from an insoluble sheet-shaped base material; at least two materials are placed in a stacked mode, pressure is applied to enable the materials to be combined, the material layers are selected from film-shaped functional layers, load layers and module layers, the module layers are prepared by combining any number of film-shaped functional layers and / or load layers in a stacked mode, and the buccal tablet finished product is prepared. The load layer and the functional layer are combined through the pressure forming technology, and the technology is simple.

The utility model discloses a high-toughness copper-clad plate forming device which comprises a box body, a support is welded to the top end of the box body, and a first motor is fixedly installed in the middle of the top end of the support. By means of combination of a first motor, a first threaded rod and a first threaded sleeve, the distance between a hydraulic mechanism and a copper-clad plate material can be accurately regulated and controlled, accurate setting of a forming pressure operation position is achieved, pressure can be evenly applied to copper-clad plates of different specifications, the size precision and flatness of formed products are remarkably improved, defects caused by uneven pressure are reduced, and the production efficiency is improved. The product quality and the qualification rate are improved; by means of cooperation of the movable plate, the sliding mechanism, the pull rope, the first spring and other components, it is ensured that the device is stable in structure and controllable in action when the first threaded sleeve moves, the pull rope and the first spring can buffer and assist in supporting and absorbing impact force when hydraulic pressure is applied, the copper-clad plate is prevented from being damaged, the service life of mechanical components is prolonged, the maintenance cost is reduced, and production safety and reliability are enhanced.

The invention provides a high-density functional ball for repeatedly opening and closing a leaking stoppage circulation tool and a preparation method of the high-density functional ball, and relates to the technical field of drilling tools. The high-density functional ball for repeatedly opening and closing the leaking stoppage circulating tool comprises the following raw materials in percentage by weight: 70-85% of polyether-ether-ketone, 10-20% of copper powder and 5-10% of silicon nitride. The preparation method comprises the following steps that polyether-ether-ketone, copper powder and silicon nitride are fully mixed and dried, and a mixture is obtained; melting the mixture at a high temperature, then injecting into a ball mold for pressure forming, and air-cooling to normal temperature to obtain a formed ball; and the formed ball body is subjected to graded tempering treatment, ball body surface finish machining treatment is conducted after cooling, and the functional ball has the advantages of being large in density, stable in shear pressure and good in mechanical property. The preparation process can improve the problems of high thermal expansion coefficient, stress concentration and the like of the polyether-ether-ketone raw material.

The invention belongs to the technical field of metal plastic processing, and provides a stamping die surface micro-texture processing method and design system.The stamping die surface micro-texture processing method comprises the steps that a dynamic working condition matrix in a historical production time period is collected and constructed, and multi-physics field coupling simulation of finite element and fluid dynamics analysis is utilized; designing optimal initial microstructure parameters of the to-be-machined stamping die to perform microstructure machining, monitoring and collecting temperature deviation and pressure deviation in real time in the machining process, judging whether thermal deformation out-of-tolerance or forming pressure abnormity occurs or not, if yes, triggering correction compensation, collecting compensation information in a historical production time period, and if not, executing the step 3; calculating a correction compensation parameter by combining the temperature deviation and the pressure deviation, performing correction compensation on the micro-texture, performing gradient layer deposition on the surface of the micro-texture after correction compensation is completed, constructing and training a micro-texture efficiency attenuation model, predicting a friction coefficient value in an attenuation deduction time period and judging whether reprocessing is triggered or not, and if yes, executing the step 2; and if not, reprocessing is carried out.

The invention discloses a preparation method of large-size high-strength Y2O3-MgO nano-composite ceramic, and relates to the field of transparent ceramic materials, the preparation method comprises the following steps: loading Y2O3-MgO nano-composite powder with the particle size of 10-60 nm into a cold isostatic pressing mold, then loading into a sealing bag, and vacuumizing; the sealed sample piece is put into a cold isostatic press for cold isostatic pressing forming, the forming pressure is 140-200 MPa, and a low-defect-density green body is obtained; and carrying out vacuum and hot isostatic pressing sintering on the formed Y2O3-MgO nano complex-phase green body. According to the preparation method, the problems that the large-size Y2O3-MgO nano-composite ceramic is low in yield, relatively large in grain size, relatively poor in mechanical property and the like can be solved through a stepped cold isostatic pressing molding technology and a vacuum + hot continuous sintering technology, and the preparation method is a preparation scheme of the Y2O3-MgO nano-composite ceramic with practical application value.

This utility model relates to a paper box edge rolling machine, and particularly to a rotary feeding paper box edge rolling machine, which includes a pre-forming station, a feeding station, and a final forming station. The feeding station and the final forming station are connected by a turntable. The forming lower mold is set on the turntable and distributed circumferentially along the turntable. The final forming station is equipped with a final forming upper mold. The pre-forming station is equipped with a pre-forming upper mold and a pre-forming bottom mold. A material transfer assembly is connected between the pre-forming station and the feeding station. The material transfer assembly includes a material transfer seat and a material transfer nozzle. The material transfer nozzle is distributed circumferentially along the material transfer seat and there are at least two sets. The material transfer seat is rotatably set, and the material transfer nozzle is raised and lowered. The independent pre-forming station increases the paper box forming pressure. When one set of material transfer nozzles picks up material at the pre-forming station, the other set of material transfer nozzles releases material at the feeding station. The feeding speed is fast, and a corner folding block can also be set at the pre-forming bottom mold.

The invention provides a glass processing method, hot bending glass and a protective film. The glass processing method comprises the following steps: (1) cutting the glass, and then carrying out CNC (Computer Numerical Control) corner polishing; (2) carrying out first sweeping treatment on the front surface of the glass to enable the side edge of the front surface of the glass to be arc-shaped; (3) cleaning for the first time; (4) the glass is put into a hot bending mold to be subjected to hot bending treatment, so that the reverse side of the glass is sunken inwards, the forming temperature of the hot bending treatment is 650-850 DEG C, and the forming pressure is 4-6 Mpa; (5) carrying out secondary polishing treatment after hot bending treatment, and respectively polishing the front surface and the back surface of the glass; (6) cleaning for the second time after sweeping for the second time; (7) carrying out acid bath after cleaning for the second time; and (8) carrying out toughening treatment after the acid bath. The hot bending glass and the protective film obtained by the method provided by the invention have more comfortable side hand feeling.

To provide a horizontal multistage pressure molding machine capable of easily inspecting cut blanks without any hassle. [Solution] A horizontal multi-stage pressure molding machine equipped with a plurality of rolling stations arranged side by side on a machine base, each consisting of a die 5 and a punch, cutting means 10 provided on one side of the machine base 2 for cutting a bar-shaped material X into workpieces of a predetermined length, and transfer means 12 for sequentially transferring the workpieces to the plurality of rolling stations, and equipped with a receiving and holding mechanism 18 for receiving and holding cut blanks cut by the cutting means 10 and discharged from the workpieces.

The utility model belongs to the technical field of seal head manufacturing, and particularly relates to special hydraulic equipment for manufacturing a large-diameter seal head with the diameter larger than 10 m. The special hydraulic equipment comprises a base and a hydraulic shell, the top of the base is connected with the hydraulic shell through a supporting rod, and a forming assembly is fixed to the top of the base; a forming cavity is formed in the top of a forming die of the forming assembly, sliding cavities are evenly formed in the top of the forming cavity in a surrounding mode, reset sliding blocks are installed in the sliding cavities in a sliding mode, sliding rods are connected to the rear ends of the reset sliding blocks, and springs are embedded in the sliding rods. The plate-shaped part is placed on the forming die, the forming pressure head is driven by the hydraulic cylinder to perform one-time downward pressing, and then the plate-shaped part is pressed by the plurality of resetting modules, so that the plate-shaped part forms a one-time recess during one-time downward pressing, and the condition that the plate-shaped part is cracked due to overlarge one-time hydraulic forming deformation is avoided; and meanwhile, the temperature of the plate can be increased through one-time hydraulic deformation, and the hardness and strength can be reduced to a certain degree.

The present application relates to the technical field of composite material processing forming, and discloses a method for improving the bonding strength of fiber reinforced polypropylene composite material and aluminum alloy, which comprises the following steps: processing aluminum alloy plate into a metal base plate, and blending and granulating a polypropylene base and glass fibers to obtain composite granules; outputting a laser beam on the surface of the metal base plate, and repeatedly scanning multiple parallel micro-line segments to process micro-grid grooves; positioning the metal base plate in a mold cavity, laying the composite granules in the groove area, heating and warming the closed mold to make the granules into a composite melt, and applying a forming pressure to make the melt enter the inside of the groove; cooling the mold in the closed state to make the melt crystallize and solidify under the limitation of the groove sidewall, opening the mold to take out the composite component and placing it. The present application improves the melt filling by controlling the groove morphology through multi-pass micro-line segment scanning, limits the deformation by cooling the closed mold, and releases the residual thermal stress by standing, thereby improving the interfacial bonding strength of the composite component.

The utility model discloses a ceramic fiber tube forming die which comprises two groups of die bodies, a first connecting block and a second connecting block are respectively fixed on two sides of the die bodies. Compared with the prior art, due to the split type mold body structural design, the risk of structural damage during demolding of the ceramic fiber pipe is remarkably reduced, the first connecting block and the second connecting block arranged on the two sides of the mold body are accurately engaged through a step structure and anti-skid lines and are matched with the first bolt for locking, and the sealing performance and stability of the forming cavity are ensured; the mold core is of a gradually-changed taper structure, the maximum-diameter end is fixed to the connecting flange, contact resistance between a fiber pipe and the mold core during demolding is effectively reduced, the pressure relief opening releases redundant gas in the initial forming stage to avoid the bubble defect, the supporting spring pushes the sealing plate to close the air hole to maintain forming pressure in the later stage, and the rejection rate is greatly reduced; and meanwhile, the split type die body design simplifies the die maintenance process, and the production cost is reduced.

The invention relates to the technical field of injection molding devices, in particular to a pressure forming device for bush pretreatment, the bottom of an injection molding cylinder is fixedly connected with an upper spraying disc, the interior of the injection molding cylinder is fixedly connected with an upper suction cup, the bottom of the upper suction cup is fixedly connected with a connecting bottom ring, and the top of the upper spraying disc is fixedly connected with a connecting top ring; the bottom of the connecting bottom ring and the top of the connecting top ring are both rotationally connected with rotating inner rings, the two rotating inner rings are rotationally connected with each other, four extrusion inclined plates are fixedly connected to the outer sides of the rotating inner rings, inner pushing columns are fixedly connected to the inner sides of the rotating inner rings at equal intervals, and the outer side of the injection molding barrel communicates with an injection molding opening. By means of the unique structural design, plastic can be evenly extruded and discharged, the defects that the inner structure of a lining is not uniform, cracks or deforms or the like are effectively overcome by accurately controlling the forming temperature and pressure distribution, and therefore the yield and reliability of products are improved.

The invention discloses a special-shaped plate pressure forming method based on gradient heating and mold constraint, and relates to the technical field of special-shaped plate forming, and the special-shaped plate pressure forming method comprises the steps of plate blanking, plate partition heating, plate feeding and positioning, mold closing, pressure maintaining forming, demolding and the like. Through the synergistic effect of gradient partition heating and multi-stage curvature mold constraint, efficient production and high-precision forming of the special-shaped plate are achieved.

The application belongs to the field of optics and nanomaterial self-assembly, and provides a material with structural color and a preparation method and application thereof. A polymer nanoring is used as an assembly unit, an easily volatile organic solvent is used as a dispersion medium, and a water vapor interface is used as an assembly interface. A self-assembly process induced by an interface surface tension gradient is used to make the nanoring array directionally arrange on the water surface. The nanoring has an outer diameter of 500-1000 nm and a thickness of 100-400 nm. Subsequently, LB film analyzer technology is used to controllably transfer the closely arranged nanoring array to a transparent substrate under suitable film forming pressure, film forming speed, film pulling speed and film pulling pressure to obtain a material with structural color. The structural color material prepared by the application has obvious structural color and angle correlation, and the structural color can be regulated by the size of the assembly unit, and is suitable for use in the fields of display, anti-counterfeiting, encryption and the like.

The invention relates to the technical field of molds, and discloses a multi-point forming mold, the upper end of the multi-point forming mold is provided with a forming pressure head assembly, the forming pressure head assembly comprises a support, the outer wall of the support is circular or the support is cylindrical, the upper end of the support is provided with a first spherical groove, and a large spherical head capable of swinging is arranged in the first spherical groove; a large jacking surface is arranged on the upper end face of the large ball head, a plurality of small ball heads capable of swinging are arranged on the large jacking surface, the small ball heads and the large jacking surface swing to make contact with the pressing surface in the curved surface pressing process of the small ball heads, and the large jacking surface is round; the large ball head of the multi-point forming die can swing in the first spherical groove, first-time shape adaptation can be carried out in the curved surface pressing process, meanwhile, after the small ball head makes direct contact with a pressing face, the small ball head further swings to adjust the position, and therefore the height difference between adjacent pressing points is reduced, the whole pressing curvature is smoother, the pressed curved surface is smoother, and the pressing efficiency is improved. The three-dimensional curved surface is higher in precision, and wrinkles on the surface of the product are prevented.