5013 results about "Film coating" patented technology

The invention discloses a polyhydroxyalkanoate water-based barrier coating composition and application, and belongs to the technical field of packaging materials. The composition takes water as a dispersion medium and comprises polyhydroxyalkanoate, a plasticizer, an emulsifier and an inorganic nano filler. The stable emulsion with the volume average particle size of 400-700nm is prepared under specific proportioning and process conditions. After the emulsion is applied to a paper substrate according to the dry film coating weight of 10-12 g / m, the obtained coating shows good comprehensive performance: the oxygen permeability is not higher than 580 cm / m.d, the water vapor permeability is not higher than 290 g / m.d, and the heat sealing strength at 130 DEG C is not lower than 5.0 N / 15 mm. The biodegradable paper-based packaging film does not contain fluorine compounds, can be completely biodegraded, and provides a technical path for sustainable paper-based packaging.

The invention relates to the technical field of structure health monitoring, and discloses an underground pipe gallery structure corrosion monitoring and evaluation method based on optical fiber sensing, which comprises the following steps: constructing a composite optical fiber sensing structure which comprises a Fe-C alloy coated optical fiber and a long-period grating, synchronously monitoring the chemical component change and the structural mechanical state of the corrosion product through the photoluminescence spectrum characteristic peak displacement and the strain distribution cloud picture; measuring deviation caused by coating layer loss is dynamically corrected in combination with the change rate of the environment refractive index; a reference grating is embedded to eliminate temperature drift interference, and iron ion in-situ deposition is triggered to realize sensing interface self-repairing. According to the invention, through a multi-physical-quantity cooperative sensing and self-adaptive compensation mechanism, the problems of signal interruption and the like caused by difficult decoupling of chemical-mechanical parameters and film coating failure in traditional monitoring are avoided, the long-term stable monitoring capability of a corrosion process in a complex environment is remarkably improved, and high-precision data support is provided for safety assessment of an underground pipe gallery structure.

The invention discloses a component real-time control method and system for vacuum glow coating, and relates to the technical field of vacuum coating, firstly, in a holographic component collection stage, a sensor and monitoring equipment are used for collecting multi-dimensional data in a coating process in real time, and secondly, in a self-adaptive component adjustment stage, a chromium-nitrogen component prediction value in a vacuum cavity is calculated to obtain a chromium-nitrogen component prediction value; the concentration is compared with the target concentration to judge whether component adjustment is needed or not, then in the real-time strategy adjustment stage, when the components deviate from the target value, the nitrogen flow, bias voltage and target current are automatically adjusted through the equipment management platform to ensure the stability of the coating process, and finally, in the real-time film quality correction stage, the film quality is corrected. The film layer quality is quantified through an innovative calculation formula, the stability and consistency of chromium-nitrogen film coating are improved through closed-loop control, and the film coating process can be dynamically optimized so as to ensure that the final film layer quality meets the design requirement.

The invention relates to a spacecraft thermal control film coating defect identification method based on a multi-dimensional attention mechanism. According to the method, a correlation mapping model based on monitoring data-detection image sensitive features-coating defects is constructed, and accurate feature information extraction of the multi-type defects of the coating on the surface of the spacecraft by a convolution kernel is realized by constructing a channel-space attention mechanism convolution neural network; through modes of random rotation, mirroring, symmetry, blurring, brightness change, contrast adjustment, saturation change, Gaussian noise addition and the like, data expansion is performed on variety defect categories with relatively small sample sizes, a data set is enriched, and the problem that the sample sizes of multiple types of defects are unbalanced is solved; a lightweight module (LM-Block) and a feature enhancement module (FEM-block) based on an attention mechanism are designed on the basis of a GhostConv self-adaptive ghost convolution module, and a coating defect detection model architecture based on efficient self-adaptive convolution and channel-spatial pyramid pooling is proposed on the basis of the modules to realize accurate recognition of defects.

The invention belongs to the technical field, and discloses a film coating processing technology simulation and optimization system based on digital twinning. The system is composed of a data acquisition module, a feature recognition and analysis module, a behavioral digital twinborn simulation module, a coating uniformity evaluation module, a process parameter optimization module and a coating distribution prediction module. The method comprises the following steps: acquiring a three-dimensional roughness digital model of a base material, accurately identifying a micron-sized local rough region and extracting geometrical characteristic parameters of the micron-sized local rough region; constructing a coating growth behavior digital twinborn model based on the geometrical characteristic parameters and the process parameters, and accurately simulating the coating growth process of the local rough area; and establishing a global coating uniformity quantitative evaluation system, and optimizing a process parameter combination by applying machine learning and a genetic algorithm. The system breaks through the limitation of traditional static shadow hypothesis, real-time tracking and accurate simulation of microstructure evolution in the deposition process are achieved, and the coating growth prediction accuracy is remarkably improved.

The invention discloses an automatic transverse and longitudinal splitting device and method for a flexible assembly battery piece. The automatic transverse and longitudinal splitting device comprises a rack, a conveying mechanism, a first splitting mechanism and a second splitting mechanism, and the battery pieces are sequentially conveyed to pass through the first splitting mechanism and the second splitting mechanism through the conveying mechanism; the protection layer and the silicon wafer are fractured along the scratches from the first direction through a first wafer splitting mechanism, so that the battery piece is split into a plurality of pieces which are connected through adhesive glue; and then the protective layer and the silicon wafer are broken along the scratches from a second direction through a second wafer breaking mechanism, so that the plurality of battery pieces are split into a plurality of small battery pieces which are connected with one another through adhesive glue. According to the invention, the protective layer and the silicon wafer in the three-layer structure of the battery piece can be cracked without cracking the adhesive, so that the cracked battery piece can be kept in an adhesion state, and conditions are provided for subsequent cracking, shaping and distance-expanding film coating production. According to the invention, the automation degree is high, and the productivity and the product quality can be effectively improved.

Various implementations of implants and implant surfaces for clinical rehabilitation or enhancement of a patient, related systems, and computer programs and methods for the design and manufacturing of implants are disclosed. A macroscale shape, a microscale surface texture, and a nanoscale surface topography are overlaid to increase, condition, and thereby functionalize an implant surface. A thin-film coating and / or laser interferometry is utilized to overlay on a machined implant substrate a nanoscale surface topography. Manufacturing the macroscale shape and the microscale texture may be performed with an ultrashort pulsed laser system in separate process steps. The design of a dental implant may be assisted by a self-learning computer program product, based on trained coupled shape models including, for example, mesh-based statistical shape and orientation models.

The invention discloses a nickel and gold electroplating method for a ceramic copper-clad substrate. The nickel and gold electroplating method sequentially comprises the following steps that S1, the ceramic substrate is covered with a complete copper surface; s2, performing film coating operation on a non-plating area, which does not need to be plated with a metal plating layer, on the copper surface, and exposing a to-be-plated area, which needs to be plated with a metal plating layer, on the copper surface; s3, the whole copper surface is electroplated, so that the to-be-plated area is fully plated with a metal plating layer; s4, carrying out film removal operation on a non-plating area on the copper surface; s5, covering an anti-etching protective film on a reserved region at least comprising the region to be plated on the copper surface, and exposing an etching region; and S6, wet etching is carried out on the copper surface, so that the copper surface in the etching region is etched. According to the invention, a metal coating with a large thickness can be electroplated, and an area corresponding to the metal coating can be formed on the copper surface.

The invention relates to electron beam evaporation coating equipment and an application method thereof. The electron beam evaporation coating equipment comprises an evaporation chamber, an electron gun system, a first vacuumizing system, a heating table mechanism, a sample table mechanism and an ion source system, the sample table mechanism is rotationally connected with the heating table mechanism, and the sample table mechanism comprises a substrate clamping part for clamping a substrate; the ion source system is connected with the top of the evaporation chamber and is used for cleaning the substrate; the first driving system is used for driving the first rotating shaft to rotate; the second driving system is used for driving the second rotating shaft to rotate; the second rotating shaft drives the heating table mechanism and the sample table mechanism to synchronously and integrally overturn; and when the sample table mechanism turns over to enable the substrate clamping part to be opposite to the ion source system, the substrate can be placed, cleaned and turned over. The device can be turned over to a specific angle, the interaction between film bases can be improved through special dip angle film coating, and the binding force is improved. The sample table mechanism can turn over to enable the substrate to directly face the ion source system.

The invention discloses a photovoltaic POSS (polyhedral oligomeric silsesquioxane)-containing antireflection film coating liquid and a preparation method thereof, the coating liquid comprises the following raw materials in parts by weight: 80-100 parts of modified emulsion, 10-15 parts of modified graphene, 3-5 parts of sodium dodecyl benzene sulfonate, 1-3 parts of triethylene tetramine and 40-60 parts of deionized water, a modified additive in the coating liquid contains a polyhedral oligomeric silsesquioxane structure, the polyhedral oligomeric silsesquioxane structure can form uniformly-distributed nanopores and is matched with a two-dimensional honeycomb lattice structure in the graphene oxide, the surface roughness can be increased, the microstructure can scatter incident light and reduce specular reflection, so that the surface light transmittance is improved, and meanwhile, the modified additive molecule contains a fluoroalkyl structure, so that the surface light transmittance is improved. The fluoroalkane has a high refractive index, so that light reflection can be reduced, and the light transmittance is further improved.

The invention relates to the technical field of semiconductor equipment, in particular to a plating pot for electron beam evaporation coating, which comprises a vacuum cavity, an electron beam emission hole is arranged at the bottom in the vacuum cavity, a crucible is arranged in the vacuum cavity, a support is rotatably connected in the vacuum cavity, a plurality of planet pots are connected to the support, and planet shafts are arranged in the centers of the planet pots. The planet shaft is rotationally connected with the support through a rotating frame, a driving shaft is rotationally connected to the support, the axis of the driving shaft and the axis of the planet shaft are arranged in a staggered mode, and the driving shaft is connected with the planet shaft through an inclined connecting rod. The wafer is attached to the planetary pot, and the support drives the planetary pot to revolve for film coating. The driving shaft is started, the planet shaft rotates around the axis of the driving shaft, the planet pot continuously swings in a reciprocating mode, and the inclination angle of the planet pot during film coating is changed, especially for a film coating sample with an inclined side wall angle. The coating property of the inclined side wall of the sample can be greatly improved, and the situation that the side wall film coating is broken or the connection strength is not enough is avoided.

The invention discloses a low-temperature sintering asymmetric porous silicon carbide ceramic membrane separation layer and a preparation method thereof, the preparation method comprises the following steps: a) preparation of a coating liquid: firstly dispersing a binder in a solution, adding silicon carbide particle powder, carrying out magnetic stirring dispersion for a period of time, then adding a dispersant, and stirring; then putting the stirred and mixed film coating liquid and the grinding balls into a ball milling tank for ball milling; and adjusting the pH value of the ball-milled silicon carbide coating liquid with ammonia water, and carrying out vacuum defoaming to finally obtain the high-stability and uniformly-dispersed silicon carbide coating liquid. Wherein the addition amount of the silicon carbide coarse particles is 0.5-50 wt% of the mass of silicon carbide; b) coating; c) drying; and d) sintering. The asymmetric porous silicon carbide ceramic membrane prepared by the method is low in sintering temperature, and the prepared separation layer membrane is controllable in pore size and uniform in pore size distribution; the method has excellent application prospects in the field of membrane separation.

Various implementations of implants and implant surfaces for clinical rehabilitation or enhancement of a patient, related systems, and computer programs and methods for the design and manufacturing of implants are disclosed. A macroscale shape, a microscale surface texture, and a nanoscale surface topography are overlaid to increase, condition, and thereby functionalize an implant surface. A thin-film coating and / or laser interferometry is utilized to overlay on a machined implant substrate a nanoscale surface topography. Manufacturing the macroscale shape and the microscale texture may be performed with an ultrashort pulsed laser system in separate process steps. The design of a dental implant may be assisted by a self-learning computer program product, based on trained coupled shape models including, for example, mesh-based statistical shape and orientation models.

The invention discloses a coating production line control method, device and equipment, a storage medium and a program product, and relates to the field of production scheduling, and the coating production line control method comprises the steps: monitoring production environment parameters and equipment operation parameters of coating production line equipment; parameter adjustment is carried out according to the production environment parameters and the equipment operation parameters through a pre-trained deep reinforcement learning model, the equipment parameter adjustment amount is obtained, and the pre-trained deep reinforcement learning model is obtained by carrying out model training on a preset initial deep reinforcement learning model based on historical coating production data obtained in advance; and adjusting the equipment operation parameters of the coating production line equipment according to the equipment parameter adjustment amount, and controlling the coating production line equipment subjected to parameter adjustment to perform coating production. The production line equipment parameters are dynamically adjusted through the deep reinforcement learning model, the problem that the film coating production quality is affected by film coating production line equipment parameter immobilization in the prior art is solved, and the film coating production quality is guaranteed.

The invention describes an apparatus that implements efficient coupling between a photonic integrated circuit (PIC) and a second optical element such as a fiber or laser, while at the same time allowing for efficient polarization management and / or optical isolation. It enables the packaging of PICs with large single mode fiber counts and in- and out-coupling of light with arbitrary polarization. The apparatus comprises a glass interposer that contains at least one polarization selective element together with a pair of lenses transforming a beam profile between the 2nd optical element and a polarization selective coupler on the PIC. The invention also comprises a method for fabricating the apparatus based on a subassembly of building blocks that are manufactured using wafer-scale high-precision glass-molding and surface treatment(s) such as thin-film coating.

The invention relates to a magnetron sputtering coating device and a coating method. The magnetron sputtering coating device comprises a reaction chamber, a magnetron target, an ion source and a sample table, the reaction chamber is of a vacuum sealing structure; the magnetic control target is fixed and communicated with the bottom surface of the reaction chamber; the ion source comprises a first ion source and a second ion source which are symmetrically arranged, and the first ion source and the second ion source are respectively fixed and communicated with the side surfaces of the two ends of the reaction chamber; the ion source comprises a first gas inlet, a transmission channel and an outlet, and the first gas inlet is used for introducing reaction gas into the ion source from the outside of the reaction chamber; and the sample table is positioned at the top end of the reaction chamber. According to the method, the symmetrical double-ion-source ionization reaction gas is matched with sputtering of the magnetron target, and the film is coated on the substrate in a reaction manner, so that the ionization rate of the gas is increased, the target poisoning phenomenon during sputtering is inhibited, the film coating rate is increased, and the preparation of the single-crystal or polycrystalline film at the low temperature is realized.

Various implementations of implants and implant surfaces for clinical rehabilitation or enhancement of a patient, related systems, and computer programs and methods for the design and manufacturing of implants are disclosed. A macroscale shape, a microscale surface texture, and a nanoscale surface topography are overlaid to increase, condition, and thereby functionalize an implant surface. A thin-film coating and / or laser interferometry is utilized to overlay on a machined implant substrate a nanoscale surface topography. Manufacturing the macroscale shape and the microscale texture may be performed with an ultrashort pulsed laser system in separate process steps. The design of a dental implant may be assisted by a self-learning computer program product, based on trained coupled shape models including, for example, mesh-based statistical shape and orientation models.

Various implementations of implants and implant surfaces for clinical rehabilitation or enhancement of a patient, related systems, and computer programs and methods for the design and manufacturing of implants are disclosed. A macroscale shape, a microscale surface texture, and a nanoscale surface topography are overlaid to increase, condition, and thereby functionalize an implant surface. A thin-film coating and / or laser interferometry is utilized to overlay on a machined implant substrate a nanoscale surface topography. Manufacturing the macroscale shape and the microscale texture may be performed with an ultrashort pulsed laser system in separate process steps. The design of a dental implant may be assisted by a self-learning computer program product, based on trained coupled shape models including, for example, mesh-based statistical shape and orientation models.

The invention relates to the technical field of optical elements, and discloses an optical film manufacturing device and method.The manufacturing device comprises a machine box, a material table is arranged in the machine box and used for containing a beaker containing a film coating solution, and a control box is further integrated on the machine box; the clamp is used for clamping a substrate to be coated; the linear telescopic electric cylinder is used for driving the clamp to move up and down; the swing frame is used for mounting the linear telescopic electric cylinder; the swinging driving mechanism is used for driving the swinging frame to perform pendulum swinging; a plurality of heating wires are arranged in the arc-shaped heating box; and the supporting frame is used for mounting the swinging driving mechanism. The manufacturing method adopts the manufacturing device to manufacture the optical film ear. The technical problems that in the prior art, in the multi-time multi-layer film coating process of an optical film manufacturing device, the film coating time is long, and the film coating uniformity is affected are solved, the film coating time is shortened in the optical film manufacturing process, drying and heating treatment can be rapidly conducted after the film is lifted, and the film coating uniformity is guaranteed.

The invention discloses a copolyimide film with low dielectric constant and low thermal expansion coefficient and a preparation method thereof, and the preparation method comprises the following steps: reacting 0.019-0.021 mol of aromatic dianhydride and 0.017-0.023 mol of diamine unit in 0.45-0.48 mol of solvent, then adding 0.0004 mol of end-capping reagent dissolved in 0.13-0.15 mol of solvent, and reacting to prepare polyamide acid with a main chain containing o-hydroxyl; the diamine unit comprises 10-40 mol% of a monomer with a main chain containing o-hydroxyl and the balance of aromatic diamine; performing film coating and thermal imidization on polyamide acid to prepare a polyimide film; and heating to carry out thermal rearrangement reaction on the o-hydroxyl to obtain the copolyimide film with the main chain containing the oxazole ring. The dielectric constant of the prepared copolyimide film is 2.7-3.0, and the thermal expansion coefficient of the copolyimide film is 19.5-26.5 ppm / K.

The invention discloses a postharvest mango preservation method based on chitosan, citric acid and electron beam irradiation, and the method specifically comprises the following steps: dissolving chitosan with the deacetylation degree of more than or equal to 85% in a 0.7-0.8% citric acid solution, and adjusting the pH value to 4.4-4.6 to prepare a film coating solution; the method comprises the following steps: dipping mangoes, drying to form a continuous coating film, packaging, carrying out 380-440Gy double-sided irradiation treatment, and finally storing in a storage environment with the temperature of 11 + / -1 DEG C and the humidity of 85 + / -5%. According to the method, through synergistic antibiosis of chitosan and citric acid, low-dose irradiation precise sterilization and low-temperature microenvironment regulation and control, the rotting rate and browning degree of the harvested mangoes are effectively reduced, the storage period is prolonged, the fruit hardness, vitamin C and other nutritional ingredients are maintained, and the method is suitable for large-scale postharvest preservation and long-distance storage and transportation of the mangoes.

The invention belongs to the technical field of filtering equipment, and discloses a photocuring material filtering device for optical diffusion film coating and a filtering method thereof.The photocuring material filtering device comprises a communicating sleeve and a suction pipe fixedly connected to the top of the communicating sleeve, and a bottom supporting part is arranged below the communicating sleeve. Other filter cartridges and filter assemblies are rapidly switched to move to the suction hole and the first hole through rotation control, rapid switching is achieved, shutdown is not needed in the switching process, rapid replacement treatment can be achieved when one filter assembly is seriously blocked, the filter efficiency is greatly improved, and the filter cost is reduced. The distribution assembly drives the filter cartridge and the filter assembly to rotate and switch, when the filter cartridge and the filter assembly rotate to the position between the flushing assembly and the second hole, flushing water from top to bottom is matched, the filter assembly is reversely flushed, automatic cleaning is achieved, blockages and accumulated filtered matter are flushed out, automatic cleaning is completed, and the practicability is high. Self-cleaning and filtering can be carried out at the same time, and the use effect is good.

The invention relates to the technical field of seedling transplanting equipment, and provides a ridging mulch applicator convenient for high-quality planting, comprising a frame which moves on a ridge by means of an external power source; the rotary tillage unit is rotationally arranged relative to the rack, rotates by means of an external power source and is used for performing rotary tillage and soil loosening on the ridge land; the ridge fixing piece is arranged on the rack, the ridge fixing piece is located behind the rotary tillage unit when viewed in the moving direction of the rack, and after the rack moves, the ridge fixing piece forms an inserting table used for inserting seedlings on the ridge land; the soil guide part is arranged on the rack and located above the ridge fixing part, and the soil guide part is used for conveying soil raised by the rotary tillage unit in a rotary tillage mode to the position above the ridge fixing part; according to the technical scheme, the problem that potato seedlings are dead and lack of seedlings when the broken opening of a mulching film is not blocked or blocked tightly during seedling insertion in the prior art is solved.

The invention belongs to the technical field of coatings, and discloses an anti-yellowing and high-hardness UV (ultraviolet) laminating varnish as well as a preparation method and application thereof. The UV film coating varnish comprises six-functionality alicyclic polyurethane acrylic resin, two-functionality linear polyurethane acrylic resin, pure acrylic resin, an acrylate reactive diluent, a filler, an ultraviolet light absorber, a non-alkaline hindered amine free radical scavenger and a photoinitiator. The weight ratio of the six-functionality alicyclic polyurethane acrylic resin to the two-functionality linear polyurethane acrylic resin to the pure acrylic resin to the acrylate reactive diluent is (2.5-3.5): (1-1.5): 0.5: (2.0-3.0); the bifunctional linear polyurethane acrylic resin is prepared from the following raw materials: isocyanate, poly (1, 4-butanediol) and hydroxyethyl acrylate. A paint film formed by the UV film-coated varnish has good yellowing resistance and high hardness, and is not easy to crack after thermal cycling.

The multidirectional rotating workpiece rotating stand comprises a fixed gear, a driving rotating disc and a plurality of planet carriers, the fixed gear is fixedly arranged, the driving rotating disc is rotationally arranged, and the planet carriers are installed on the driving rotating disc; the planet carrier comprises a fixed shaft, a rotary shell, a driven gear and a plurality of layers of hanging rods, the fixed shaft is fixedly installed on the driving rotary disc, the rotary shell is rotatably installed on the driving rotary disc, the rotation center of the rotary shell coincides with the axis of the fixed shaft, the driven gear is fixedly installed on the rotary shell, and the driven gear is meshed with the fixed gear; a fixed bevel gear and an inert bevel gear are arranged corresponding to each layer of hanging rod, the fixed bevel gear is fixedly connected to the fixed shaft, the inert bevel gear is rotationally connected to the inner side of the rotary shell and meshed with the fixed bevel gear, the hanging rods are rotationally arranged on the rotary shell and incline outwards, and output bevel gears meshed with the inert bevel gear are arranged on the hanging rods. According to the invention, uniform coating of a workpiece with a complex coating surface can be better realized.

The utility model discloses a suspension type rotary tillage, ridging, fertilization and film mulching all-in-one machine which comprises a rack, a cultivation device, a ridging device, a fertilization device, a film mulching device and a soil covering device, wherein the cultivation device, the ridging device, the fertilization device, the film mulching device and the soil covering device are arranged on the rack. The cultivation device comprises a cutter shaft, a rotary tillage cutter and a rotary driving mechanism; the ridging device comprises a ridging cutter and a ridging piece; the fertilizing device comprises a fertilizer box and a fertilizer feeder; in the operation advancing direction, the film mulching device is arranged behind the ridging device, and the soil covering device is arranged behind the film mulching device; the film covering device comprises a mold hanging frame, a film covering roller and a film pressing wheel; and the soil covering device comprises a soil covering wheel. The suspension type rotary tillage, ridging, fertilization and film mulching all-in-one machine can achieve tilling, ridging, fertilization and film mulching work, is higher in automation degree and intelligent degree, can improve production efficiency, relieve burden of workers, improve planting efficiency and reduce labor cost, and therefore promotes the mechanization process of the whole tobacco planting process.

The invention discloses a fitting appearance detection machine and a detection method thereof. The fitting appearance detection machine comprises a feeding module; the film tearing device is used for tearing a protective film on the display screen, and the film tearing device comprises a film tearing platform, a film tearing mechanism and a code scanning assembly used for conducting code scanning on the display screen; the cleaning device is used for removing stains attached to the surface of the display screen, and the cleaning mechanism comprises a cleaning platform and a cleaning mechanism body used for cleaning the display screen; the detection device is used for detecting the display screen, and the detection device comprises a detection platform and an AOI detector used for detecting an AOI image of the display screen; the film covering device is used for attaching a protective film to the display screen, and the film covering device comprises a film covering platform and a film covering mechanism; the protective film carrying device is used for carrying the protective film torn from the film tearing device; and a discharging module. The problems that in the detection process of existing display screen detection equipment, the false detection rate is high and the efficiency is low due to stains on the surface of a display screen and manual operation are solved.

The invention discloses a multifunctional concrete ground construction device and a using method thereof. The multifunctional concrete ground construction device comprises a vehicle body part; the vibration flattening parts are symmetrically installed on the two sides of the front portion of the vehicle body part and used for carrying out vibration flattening construction operation; the screw rod sliding rail part is mounted at the upper part of the vehicle body part; the vibrating main body supporting seat part comprises a base fixed on a bearing table in the screw rod sliding rail part and a rotating table rotationally mounted at the top of the base; the vibrating platform part comprises a vibrator bearing platform fixed on the rotating platform, a vibrator mounted at the front end of the vibrator bearing platform, and a gravity center adjusting mechanism mounted at the rear end of the vibrator bearing platform; the troweling part is used for troweling the concrete ground; and the film covering part is used for carrying out film covering treatment on the concrete surface. The multifunctional concrete construction machine has multiple functions of vibration, vibration leveling, troweling, film covering, water spraying and floor paint coating, and the problems that the concrete construction efficiency is low, the cost of labor needed by construction is high, and the working intensity of labor is large are solved.

The invention discloses a coating device, a coating uniformity correction method and an optical device. The coating device comprises a coating workpiece disc, a first rotating mechanism, a coating source and a target coating correction plate, the first rotating mechanism is used for driving the coating workpiece disc to rotate; the film coating workpiece disc comprises a film coating surface facing one side of the film coating source; the plurality of substrates are positioned on the coating film surface; the target coating correction plate is positioned between the coating source and the coating workpiece disc; the target coating correction plate comprises a plurality of shielding parts, and the shielding parts are symmetrical about the central axis of the target coating correction plate; the coating source is used for gasifying the coating material, and the target coating correction plate prevents part of the coating material from being deposited on the surface of the substrate. By adopting the technical means, a uniform and compact dielectric film with an approximately rectangular effective area can be plated on the substrate, the film plating uniformity of the substrate is ensured, the product performance is further improved, and the film plating efficiency is high.

The invention discloses a crystal resonator sputter coating device and a preparation method of a crystal resonator, and belongs to the field of electronic components, the crystal resonator sputter coating device comprises a bottom plate, a lower electrode mask plate, a positioning plate, an upper electrode mask plate and a magnetic cover plate in sequence, the positioning plate is provided with a wafer positioning groove, a wafer is installed in the wafer positioning groove, and the magnetic cover plate is provided with a magnet. The upper electrode mask plate and the lower electrode mask plate are both provided with electrode holes, the thickness of the positioning plate is recorded as h < definite >, and one surface of at least one of the upper electrode mask plate and the lower electrode mask plate, which faces a wafer, is provided with a diffusion prevention bulge for preventing diffusion of electrode particles during film coating, and the thickness of the diffusion prevention bulge is recorded as h < definite >. The size of the dispersion preventing protrusion is matched with the size of the wafer positioning groove, the dispersion preventing protrusion is located in the wafer positioning groove during assembly, the thickness of the wafer is recorded as h wafer, and h wafer lt is smaller than or equal to 0.017 mm; and h, setting. The sputtering coating device solves the problem of electrode diffusion of the high-frequency crystal resonator in the existing sputtering coating device for the crystal resonator due to too small wafer thickness.