8514results about How to "Guaranteed uniformity" patented technology

The invention discloses an AI spraying system control method capable of achieving autonomous 3D scanning, and the method comprises the steps: obtaining three-dimensional surface data of a to-be-coated workpiece through high-precision 3D scanning equipment, constructing a surface model of the workpiece according to the data, and extracting surface feature parameters. Coating parameters set by a user are received, the coating parameters comprise the viscosity, the chemical property and the film thickness requirement of paint, the surface characteristic parameters and the coating parameters are input into the spraying optimization model, and an initial spraying track and technological parameters are generated through calculation in combination with historical data. Environment parameters are collected and associated with the initial process parameters, and the adjusted spraying track and the adjusted process parameters are generated through dynamic environment compensation. And through a robot control system, coating operation is executed according to the adjusted parameters, the spraying effect is optimized in real time, and it is ensured that the surface of the workpiece is evenly coated. Efficient automation of the spraying process is achieved, the coating quality and consistency are remarkably improved, and the automatic spraying device is particularly suitable for coating of workpieces with complex curved surfaces or changeable shapes.

The invention belongs to the technical field of Internet of Vehicles and communication security, and relates to a vehicle intrusion detection system and method based on a Hybrid EfficentNet model, and the system is obtained by training the Hybrid EfficentNet model. Wherein the Hybrid OfficientNet model comprises an initial convolutional layer, a backbone network, a self-adaptive global pooling layer, a Flaten layer, a discarding layer, a hidden layer and a classification layer; the backbone network is composed of one Fusion MBConv module and 15 MBConv modules, and each MBConv module comprises an expansion layer, a depth separable convolution module, a channel and space attention mechanism and a projection layer; residual connection is used in the MBConv module; the system has excellent capability of detecting abnormal traffic, realizes high accuracy, high-efficiency processing capability and high response speed, meets the requirement of convenient operation in a vehicle environment, and effectively solves the technical problems that an existing intrusion detection model is complex and inconvenient and cannot be directly deployed in a resource-limited vehicle-mounted network environment.

The invention relates to the technical field of sewage treatment, in particular to aerobic granular sludge integrated sewage treatment equipment which comprises an aerobic tank, and the aerobic tank comprises an outer tank body and an inner tank body; a turntable is rotationally mounted on the inner bottom surface of the inner tank body, and a plurality of groups of aeration mechanisms are also fixedly mounted on the turntable; the aeration mechanism comprises an aeration assembly, a dredging assembly is arranged on the aeration assembly, and a pressing assembly used in cooperation with the dredging assembly is arranged on the inner wall of the inner tank body; a driving mechanism is fixedly mounted on the top surface of the inner tank body and is in transmission connection with the periphery of the hollow shaft; a transmission assembly is arranged on the periphery of the hollow shaft and is in transmission connection with a plurality of floating foam cleaning assemblies. According to the sewage treatment device, the floating foam cleaning step can be transferred into the settling zone in the sewage treatment process, and cleaning is relatively easy. The dredging assembly is sequentially and periodically pressed by the pressing assembly, so that the aeration assembly is periodically and automatically dredged.

The invention relates to the technical field of insulating materials, in particular to a flame-retardant high-strength insulating material and a preparation process thereof. The insulating material comprises the following components in parts by weight: 50-60 parts of polyvinyl chloride, 20-40 parts of crosslinked polyethylene, 10-15 parts of an ethylene-vinyl acetate copolymer, 20-40 parts of a flame retardant, 5-15 parts of talcum powder, 10-20 parts of calcium carbonate, 6-12 parts of a compatilizer and 3-8 parts of an antioxidant. The flame retardant is prepared by taking ammonium polyphosphate as an acid source, polydopamine as a charring agent and modified graphene oxide as a reinforcing agent, the flame retardant is added into polyvinyl chloride and a crosslinked polyethylene insulating material base material, and combined with the combined action of an ethylene-vinyl acetate copolymer, talcum powder, calcium carbonate, a compatilizer and an antioxidant, the flame retardant property of the insulating material base material is improved, and the flame retardant property of the insulating material base material is improved. The prepared insulating material not only has excellent mechanical property, but also has excellent flame retardant property, so that the service life of the material is prolonged.

The invention relates to the technical field of sole production, in particular to a film covering integrated forming machine suitable for popcorn soles and a sole forming process. The equipment comprises a pressing assembly, a die, a steam generator, a positive and negative pressure generator, a stock bin and a film conveying device, the die comprises a female die and a male die, the female die is provided with a cavity and an air pressure cavity, a first air hole is formed in the cavity, the female die is provided with a cutting groove formed around the cavity by a circle, the male die is provided with an embedded block, and a second air hole is formed in the male die; the film conveying device comprises an output roller and a recycling roller, and a film material output by the film material roll penetrates through the space between the female die and the male die and then reaches the recycling roller to be wound and recycled. The effect of eliminating dark fringes is achieved by covering the bottom face and the side face of the popcorn shoe body blank with the film materials, the film covering procedure is synchronously completed in the popcorn shoe sole forming process, the material transferring step is omitted, full-process automatic operation can be achieved, and the labor cost is low.

The invention provides an inner side visual detection system for weaving of a strip blank. The inner side visual detection system comprises an image acquisition module, an image processing module, a control module and an output module, the image acquisition module comprises at least one high-resolution camera, the high-resolution camera and a plurality of groups of adjustable light sources work cooperatively, and by adjusting the intensity, the angle and the direction of the light sources, the visual detection accuracy of the inner side visual detection system is improved. And the illumination uniformity in the image acquisition process is ensured, so that the influence of illumination variation on the image quality is reduced. According to the inner side visual inspection system for strip blank weaving, through an innovative image acquisition and processing technology, the problems that the image quality is unstable and the defect recognition capability is insufficient are remarkably solved. The image acquisition module adopts a high-resolution camera and an adjustable light source to cooperatively work, and the uniformity of images under different environment illumination is ensured by dynamically adjusting the intensity, angle and direction of the light source, so that the influence of external illumination change on the image quality is reduced.

The invention belongs to the technical field of aviation equipment system modeling and analysis, and particularly relates to an aviation equipment system reliability analysis method and system based on MBSE model conversion, and the method comprises the steps: S1, building the function model reliability of an aviation equipment system through an MBSE model mapping conversion technology; s2, establishing a fault logic model of the aeronautical equipment system, and completing key fault identification and analysis evaluation of the aeronautical equipment system; s3, determining reliability index parameters of the aeronautical equipment system according to key fault identification and analysis results of the aeronautical equipment system; and S4, determining an aviation equipment system reliability analysis result according to the aviation equipment system reliability index parameters, and completing reliability analysis. According to the method, the model conversion method is adopted to analyze the reliability related indexes of the aeronautical equipment system, the situation that reliability analysis results of the same system are greatly differentiated due to manual intervention and do not conform to the actual system state can be avoided, and comprehensiveness and accuracy of fault logic relation analysis of the aeronautical equipment system are guaranteed.

The invention discloses a fan operation state anomaly detection method. The method comprises the following steps: S1, generating a fan operation voiceprint signal data set; s2, preprocessing the fan operation voiceprint signal data set; s3, constructing a feature data set; s4, performing preliminary classification on the fan operation voiceprint signals by using a hierarchical clustering algorithm based on the feature data set; s5, performing secondary subdivision in each fan operation state cluster by further using a hierarchical clustering algorithm; s6, establishing a fan normal operation voiceprint signal feature model based on the fan voiceprint signal feature data of the normal state sub-cluster, and establishing a fan potential abnormal state voiceprint signal feature model based on the voiceprint signal feature data of the potential abnormal state sub-cluster; s7, judging the running state of the fan by the system; and S8, when the running state of the fan is detected to be abnormal, the system sends out an alarm signal. The method has remarkable beneficial effects in the aspects of fan operation state monitoring and anomaly detection.

The invention belongs to but is not limited to the technical field of aluminum alloy preparation, and discloses a high-plasticity aluminum alloy prepared from secondary aluminum and a preparation method, high-quality secondary aluminum waste is selected, and obvious impurities are removed; carrying out chemical or mechanical cleaning on the secondary aluminum, and sorting; the pretreated secondary aluminum waste is added into a smelting furnace to be smelted; a purifying agent is added for melt purification; the melt is further purified through inert gas stirring and standing; adding a proper amount of alloy elements into the melt; under the protection of inert gas, uniformly stirring the melt; casting the melt into a cast ingot by adopting a semi-continuous casting or continuous casting process; controlling the cooling speed; carrying out homogenizing heat treatment on the cast ingot to eliminate composition segregation in the cast ingot; and extruding and rolling to obtain the high-plasticity aluminum alloy material. According to the method, the purity of the aluminum alloy is improved, the performance uniformity is enhanced, and the aluminum alloy material with high plasticity and excellent mechanical performance is obtained and is suitable for industrial application with high requirements.

The invention is suitable for the field of drip irrigation equipment, and provides a large-area uniform-control and high-blocking-resistance irrigation emitter for drip irrigation. The irrigation emitter comprises an irrigation emitter shell; the water inlet part is embedded in the central part of the irrigation emitter shell; and the runner part is of a tooth-shaped reciprocating structure. According to the large-area uniform-control and high-blocking-resistance irrigation emitter for drip irrigation, firstly, the whole water flow enters the flow channel units through the first straight line sections and impacts on the vertical upstream face, and part of the water flow impacting the topmost part of the upstream face flows into the next flow channel unit through the first oblique line sections and the tooth fillet radiuses; at the moment, the water flow generates maximum energy dissipation at the tooth fillet radius, namely the tooth tip, so that the turbulent kinetic energy of the water flow in the flow channel unit is effectively improved, the maximum laying distance of the drip irrigation tape is greatly prolonged, and the blank of lack of ultra-long-distance laying of the irrigation emitter and the drip irrigation tape in China is filled.

The invention relates to the technical field of RFID chip manufacturing, in particular to an RFID chip image anomaly detection method and system based on intelligent learning. The method comprises the following steps: acquiring a real-time RFID chip sampling image set, performing feature alignment based on a registration template, generating an average grey-scale map by using an alignment image set, and obtaining a chip edge mask image set by using an edge search algorithm; segmenting the edge mask image set of the RFID chip to obtain an effective edge mask variance image set of the RFID chip; integrating the variance image set to obtain a pre-generated variance image; acquiring field environment data of the RFID chip and performing sensitivity coefficient estimation to obtain an edge sensitivity coefficient; and performing convolution filtering smoothing processing on the pre-generated variance image to obtain a chip edge variance image, and constructing an RFID chip image anomaly detection model based on the edge variance image and the average grey-scale image. According to the invention, the detection accuracy and stability are improved.

The invention belongs to the technical field of resin processing, and particularly relates to a resin processing feeding device which comprises a feeding hopper and a conveying belt arranged below the feeding hopper. A feeding anti-blocking assembly is installed on the outer side of the feeding hopper and comprises a fixed supporting frame fixedly installed on the outer side of the bottom of the feeding hopper. The feeding hopper can vibrate in the feeding process, the vortex phenomenon of resin materials in a pipeline in the feeding process is avoided, the conveying pipeline is prevented from being blocked, the flowability of the resin materials is effectively improved, the resin materials in the feeding hopper can be spirally pushed and extruded, and the service life of the resin materials is prolonged. According to the feeding device, the resin materials can be smoothly and smoothly discharged from the discharging pipe at the bottom of the feeding hopper for feeding after being pressed, meanwhile, the inner wall of the discharging pipe can be conveniently cleaned, the phenomenon that the inner wall of the discharging pipe is blocked due to long-time use is prevented, and smooth feeding of the resin materials is guaranteed.

The invention discloses a double-layer coated lithium supplement agent as well as a preparation method and application thereof. The double-layer coated lithium supplement agent comprises a lithium supplement agent inner core and a first layer coated on the surface of the lithium supplement agent inner core, and the surface of the first layer is coated with a second layer; the first layer comprises a polymer and a lithium salt, the polymer has a polar group, the second layer comprises a hydrophobic material, a hydrogen bond and / or a coordinate bond is formed between the lithium salt and the polymer, and a coordinate bond is formed between the lithium salt and the hydrophobic material. According to the lithium supplement agent disclosed by the invention, through double-layer coating, the first layer has a lithium ion conduction enhancement function and the second layer has a hydrophobic protection function, and the two layers have a synergistic effect, so that the lithium ion conduction efficiency of the lithium supplement agent is improved, the air stability of the lithium supplement agent is improved, and the service life of the lithium supplement agent is prolonged. And good compatibility between the electrolyte and the first layer is also ensured, so that the problems that the safety of the battery is reduced and the cycle life of the battery is shortened due to side reaction are avoided.

The utility model discloses a compact and stable type automatic plate edge banding machine, which relates to the technical field of plate edge banding, and comprises a rack, a chain plate conveying belt, a guide pressing plate assembly, a pre-milling assembly, a gluing assembly, a plate joint strip assembly, a flush assembly, a fine trimming assembly, a scraper assembly and a polishing wheel. The compact and stable plate edge sealing equipment is formed, the independent and integrated gluing assembly and the integrated cavity are adopted, the coaxiality is good, the gluing uniformity cannot be affected, the front end and the tail end of a plate joint strip are cut off in a tracking mode, the cutter thrust is small, the stability is good, the upper portion and the lower portion of the plate joint strip are simultaneously refined, resonance influences are mutually reduced in an abutting mode, vibration is reduced, and the edge trimming precision is high; the fine adjustment spring is arranged, so that the distance between the fine trimming mechanism and the scraper mechanism can be finely adjusted, stable pressure is formed between the fine trimming mechanism and the scraper mechanism and the plate joint strip, the distance between the plate joint strip and a fine trimming cutter or a scraper is conveniently controlled, and fine trimming or scraping is more stable and better in effect.

The invention provides edible oil filling equipment which comprises a machine body provided with a working table and a working cavity located below the working table. The storage device is positioned above the workbench; the filling device is provided with a filling bracket and a plurality of filling valves arranged on the filling bracket; the feeding device is respectively communicated with the storage device and the plurality of filling valves; the filling bracket comprises a guide piece which is vertically arranged on the surface of the workbench; the lifting plate is matched with the guide piece; the pushing piece is located below the lifting plate and makes contact with the bottom of the lifting plate so that the lifting plate can move up and down in the extending direction of the guiding piece; and the adjusting plate is connected with the lifting plate, a plurality of adjusting grooves matched with the multiple filling valves are formed in the adjusting plate at intervals, and the multiple adjusting grooves are distributed in a fan shape, so that the horizontal distance between the multiple filling valves can be adjusted along with movement of the multiple filling valves in the multiple adjusting grooves. The filling equipment can meet the filling requirements of containers of different specifications, and the accuracy and uniformity of material filling are guaranteed.

The invention discloses a seed layer induced FeCoNiCuMo high-entropy alloy nanocage electrocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and reacting iron, cobalt and nickel precursors to prepare a FeCoNi nanocage catalyst as a seed layer; adding copper salt and molybdate into the seed layer solution, carrying out ultrasonic mixing, adding a pH regulator and a reducing agent, carrying out ultrasonic treatment, putting the mixed solution into liquid nitrogen, cooling, carrying out primary nucleation, naturally unfreezing, standing for nucleation, cleaning, and freeze-drying to obtain the high-entropy alloy nanocage electrocatalyst. The catalyst is used for preparing urea through CO2 and NO3 <-> electro-catalysis, can effectively adjust the matching of CO2 and NO3 <-> reaction kinetics, and has extremely high Faraday efficiency and yield for synthesizing urea through C-N coupling.

The invention discloses a non-equal period phase shift phase unwrapping method, which comprises the following steps of: 1, constructing a wavelength-De Bruijn element mapping table, and generating a non-equal period phase shift stripe group; 2, projecting the phase shift fringes to a measured object frame by frame, obtaining a modulation pattern, and decoding the modulation pattern to obtain a non-linear wrapped phase; 3, constructing an approximate phase to carry out local phase unwrapping on the nonlinear wrapped phase to obtain a nonlinear local phase; and 4, calculating a phase order by minimizing a nonlinear error on the nonlinear local phase, performing phase unwrapping in combination with a nonlinear wrapped phase, and obtaining a linear absolute phase of the measured object through piecewise linear mapping. According to the measurement method, high-precision absolute phase calculation can be realized only by using three projection patterns, and the three-dimensional measurement efficiency is greatly improved.

The invention belongs to the technical field of thermal barrier coatings, and provides an artificial preparation method of multi-scale aero-engine environment sediment particles. The preparation method comprises the following steps: grinding CMAS original powder into mixture powder; calculating the mass of the required mixture powder according to the powder density of the CMAS original powder and the particle size of the target sediment particles; weighing the mixture powder, and pressing the mixture powder into sheets; in an air suspension furnace, tabletting and melting the mixture powder into balls by adopting a laser; and rapidly cooling to normal temperature to obtain the target sediment particles with the target particle size. The melting process of the CMAS powder is greatly improved, the gas suspension furnace and the laser are used for heating, single CMAS particles with the designed size can be obtained in a short time, the preparation time is shortened, and the preparation cost is effectively reduced.

The invention, which relates to the technical field of fire safety, discloses a variable-angle solar panel heating test system comprising a sample loading and observation mechanism, a fire performance analysis mechanism and a radiation heating mechanism. The sample loading and observing mechanism is used for fixing samples with different sizes, adjusting the height and angle of the samples and observing and measuring sample data; the fire hazard performance analysis mechanism is located above the sample loading and observation mechanism and is used for collecting and analyzing smoke and mass loss generated by the heated sample and outputting fire hazard key parameters; the radiation heating mechanism is positioned in front of the sample loading and observing mechanism and is used for providing a real-time heat source for the sample. The device can test the change of the fire performance of the sample under the action of uniform and non-uniform external heat sources in real time, can conveniently switch the heating angle, the heating area, the size and the thickness of the sample, synchronously observes the crack diffusion process, and has the advantages of simple structure, convenience in operation and the like.

The invention discloses a tea leaf crushing device for tea leaf production, and relates to the technical field of tea leaf production, the tea leaf crushing device comprises a barrel, a material box is arranged on one side of the top of the barrel, a positioning rod is fixedly connected to the top of an inner cavity of the barrel, a crushing assembly is arranged at the bottom end of the positioning rod, a driving rod is rotatably connected to the positioning rod, and a discharging assembly is arranged at the bottom end of the driving rod. According to the tea leaf crushing device for tea leaf production, through linkage of the driving gear driven by the servo motor, the gear ring, the self-rotating gear, the crushing cutter and other components, the cutting speed and frequency of the crushing cutter are improved, the cutting path is complex and changeable, hard parts and irregular shapes of tea leaves can be more effectively penetrated, and the tea leaf crushing effect is improved. And the time and energy required by crushing are greatly reduced, and the crushing efficiency is remarkably improved.

The invention discloses an intelligent vibrating rod, and relates to the technical field of concrete pouring equipment. The device comprises a gasoline engine, a vibrating rod head is arranged on one side of the gasoline engine, and an adjustable rod body is arranged between the gasoline engine and the vibrating rod head; a direction adjusting part and an angle adjusting part are arranged in the adjustable rod body, and the vibrating rod head is fixed after being adjusted in a circumferential rotation mode around the adjustable rod body through the direction adjusting part. And the vibrating rod head is fixed after being overturned and adjusted at the end part of the adjustable rod body through the angle adjusting piece. According to the device, the adjustability of the angle of the vibrating rod head is realized through the matching of the worm, the worm gear and the like, the vibrating coverage can be ensured without frequently moving the vibrating rod or adjusting the construction position in a narrow space, the vibrating surface can be greatly increased through the matching of the angle adjusting piece, the vibrating blind area does not exist, and the working efficiency is improved. The uniformity and compactness of the concrete are ensured, and the requirements of users are met.

The invention belongs to the technical field of power battery cooling, and particularly relates to a flow control method and system for a liquid cooling system of an electric vehicle-mounted power battery, and the method comprises the steps: carrying out the parameterization of a geometric model of the liquid cooling system; establishing an equipment resistance model based on the equipment flow resistance characteristics; initializing flow distribution, constructing a dynamic flow distribution model, calculating the flow of each node and judging whether the flow meets a target requirement or not, and if not, readjusting the flow; calculating the resistance of each section, determining the total resistance of the pipeline, and checking the water pump lift; the flow uniformity is judged by calculating the pipeline resistance between the nodes, and if the flow is not uniform, the flow is redistributed or the pipeline design is optimized until the flow is uniform. Through flow control, the problems of non-uniform flow distribution and poor temperature consistency of multiple battery packs in the prior art are solved, the optimal working state of the power battery is ensured, overheating and overlarge temperature difference are avoided, and the operation efficiency, stability, durability and safety are improved.

The invention belongs to the technical field of road engineering materials, and discloses a wide-temperature-range crack pouring adhesive based on rubber modified asphalt and a preparation method thereof.The wide-temperature-range crack pouring adhesive is prepared by taking the rubber modified asphalt as a matrix through a response surface method and adding SBS, basalt fibers and a modifier. The performance of the material is tested through a conventional test, and meanwhile, a test with more characteristics in northeast regions is provided, and the performance of the material is detected through injection depth, viscosity, low-temperature stretching after aging and freeze-thaw cycle stretching. Results show that a test designed by a response surface method has very strong reliability, and the modified heating type crack pouring adhesive added with the basalt fiber can significantly improve the high and low temperature performance of the crack pouring adhesive, and also has good anti-aging performance and freeze-thaw cycle resistance. And the filling depth and the viscosity of the sealant are not obviously lower than those of the same type of sealant.

The invention discloses a weak surrounding rock tunnel peripheral hole empty hole guide back break control blasting construction method. The method comprises the steps that the surrounding rock grade and the blasting circulation footage are determined; designing tunnel peripheral hole hollow guide drilling blasting parameters, and determining peripheral hole pitch and explosive load; performing drilling operation; after drilling of the rock drilling equipment is completed, hole-separated charging is carried out on the peripheral holes, and the distance L between the charging peripheral holes and the non-charging empty holes is preliminarily calculated by analyzing the stress state, the impact pressure and the failure criterion of rock; according to the distance L, non-charging empty holes are formed between the charging peripheral holes; after safety alert is ensured, blasting is carried out; the steps are repeated until the tunnel blasting back break value reaches the expected standard, the optimal tunnel peripheral hole hollow guide drilling blasting parameters can be determined, and construction is conducted according to the optimal parameters; over-excavation and under-excavation can be effectively controlled, the situations of block falling of weak surrounding rock and the like are effectively reduced, and the safety and working efficiency of follow-up construction operation are improved.

The invention relates to the technical field of demolding control, and provides an anti-deformation demolding control method and system for a plastic mold. The method comprises the steps that temperature sensing is conducted on a mold, and the initial temperature is obtained; traversing according to the initial temperature, determining a to-be-preheated area, and performing temperature control calculation to obtain a temperature uniformity coefficient; activating a cooling channel based on the temperature uniformity coefficient, and performing staged cooling to obtain cooling state data; demolding analysis is conducted according to the cooling data, demolding parameters are generated, dynamic association is conducted in combination with environment temperature changes, and a demolding strategy is formulated; simulating and executing a demolding strategy, performing deformation monitoring, generating feedback data, optimizing the strategy and executing anti-deformation demolding operation. The technical problem of mold deformation caused by non-uniform temperature distribution in the demolding process of the plastic mold is solved, and the technical effects of avoiding mold deformation and improving the product quality and the production efficiency by accurately controlling the temperature distribution, the cooling process and the demolding parameters are achieved.

The full-biodegradable film mulching and punching equipment for crop planting comprises a sleeve, the sleeve is in threaded connection with the outer side of a connecting roller, and the upper portion of a punch is connected with an adjusting mechanism capable of adjusting the size of a discharging opening according to different crop vegetable seeds. The lower portion of the punch is connected with a frame plate through a first transverse rod and a limiting rod, and flow guiding mechanisms used for guiding crop vegetable seeds to the inner side of the frame plate are installed on the two sides of the frame plate. According to the equipment, the processes of film mulching, punching and sowing are automatically completed, the speed is high, the efficiency is high, the planting time is greatly shortened, and the agricultural production efficiency is improved. Automatic equipment replaces manual operation, manpower input is reduced, labor cost is reduced, meanwhile, labor intensity is relieved, the equipment can control the seeding quantity, the seeding uniformity and depth are guaranteed, the seed germination rate and the crop yield are improved, in addition, the equipment does not need any electric control unit, and cost is greatly saved.

The invention belongs to the technical field of additive manufacturing, and particularly relates to additive manufacturing forming equipment which comprises a machine body, a powder laying unit, a laser unit and a forming unit. The discharging assembly is mounted in the second cavity; the stirring assembly is mounted in the second cavity; the material receiving plate is mounted in the machine body; the powder spreading platform is fixedly mounted in the machine body; the side plate is fixedly installed in the machine body, and a trowelling assembly is installed on the side plate in a sliding mode; by arranging the stirring assembly, powder discharged from the storage cavity in the discharging station is dispersed, and even if the communication position of the storage cavity in the discharging station and the storage cavity in the discharging station is blocked, the powder can still be uniformly dispersed in the storage cavity in the discharging station; therefore, after falling onto the material receiving plate under the action of gravity, the powder can be uniformly distributed on the material receiving plate in the direction of the discharge port.

The invention relates to the technical field of copper rod machining, in particular to a copper rod straightening device and a working method.The copper rod straightening device comprises a first fixing plate, a second fixing plate, a third fixing plate, a first straightening assembly, a second straightening assembly and an adjusting assembly which are sequentially arranged in the copper rod conveying direction, and each straightening assembly comprises a moving plate, a sliding rail, a support and a round roller; the support is connected with the fixing base through the connecting rod, the bottom of the fixing base is connected with the sliding block, the round rollers are distributed in the circumferential direction of the copper rod, all-directional supporting and straightening force applying are conducted on the copper rod, the uniformity of straightening force is guaranteed, the adjusting assembly synchronously drives the movable plate to move through positive and negative threads of the adjusting rod, the fixing base is driven to be adjusted along the sliding rail, and the round rollers synchronously get close to or get away from the copper rod. Synchronous movement of the movable plate is achieved through the positive and negative threads of the adjusting rod, the multiple fixing bases are driven to move synchronously along the sliding rails, the multiple round rollers are controlled to be close to or away from each other synchronously, linkage adjustment and uniform stress of the multiple round rollers in all directions are achieved, and the straightness and straightening efficiency of the copper rod are improved.

The invention relates to the technical field of circuit substrate manufacturing, and particularly discloses a preparation method of a composite solder sheet and an AMB ceramic copper-clad plate. The composite solder sheet is composed of an active metal foil and a copper-containing layer modified on the surface of the active metal foil, and the preparation method of the copper-clad plate comprises the following steps: after the surface of the active metal foil is pretreated, the copper-containing layer is deposited to prepare the composite solder sheet, and the composite solder sheet is placed between a copper substrate and a ceramic sheet to be pressed and assembled. And performing vacuum brazing on the assembly to complete the preparation of the ceramic copper-clad plate. A composite solder sheet containing active metal is adopted, high-temperature element diffusion during vacuum brazing is utilized at the diffusion temperature to achieve alloying of a composite solder layer, and then heat preservation is conducted at the brazing temperature to achieve uniform melting of solder and wetting metallurgical reaction between the solder and copper and between the solder and a ceramic substrate. By means of the preparation method, low-cost and high-reliability preparation of the AMB ceramic copper-clad plate can be achieved, and the prepared AMB ceramic copper-clad plate also has high peel strength and lower weld porosity.

The invention relates to the field of high polymer materials, and discloses a degradable environment-friendly plastic, which comprises 20-50% of polylactic acid, 10-30% of polyhydroxyalkanoate, 5-20% of a starch-based material, 1-10% of a nano reinforcing agent, 0.5-5% of a self-repairing microcapsule, 2-10% of a bio-based plasticizer, and 0.1-3% of a natural antioxidant. Compared with an environment-friendly plastic scheme only adopting a single component of PLA or PHA in the prior art, the environment-friendly plastic disclosed by the invention adopts a composite formula comprising polylactic acid, polyhydroxyalkanoate, a starch-based material, a nano reinforcing agent, a self-repairing microcapsule, a bio-based plasticizer and a natural antioxidant; according to the present invention, the overall performance of the material is improved, and the degradation rate and the degradation process are optimized, such that the plastic material can maintain the high strength and the high toughness, and can be efficiently degraded in the natural environment so as to effectively solve the problems of incomplete degradation and insufficient mechanical property of the traditional single material.