280 results about "Injection pressure" patented technology

The invention relates to the technical field of deep learning, and discloses an earphone mold injection molding parameter optimization method, device and equipment, and the method comprises the steps: collecting temperature distribution data and mold cavity pressure data in an earphone mold cavity, and carrying out earphone shell injection molding dynamic analysis to obtain an earphone shell material flow curve; carrying out topological characteristic analysis on the earphone shell material flow curve, and constructing an earphone shell injection molding process parameter model; based on the earphone shell injection molding process parameter model, the mold cavity temperature and the mold cavity pressure serve as state variables, the heating power and the injection pressure serve as control variables, and an earphone shell injection molding optimization controller is constructed; the earphone shell injection molding optimization controller is connected with the injection molding machine control system, the heating power and the injection pressure of the earphone mold are adjusted in real time, the optimal technological parameters of the earphone mold are solved, a real-time feedback and parameter fine adjustment mechanism is adopted, the injection molding machine control system can quickly respond to technological fluctuation, and the consistency of product quality is guaranteed.

The common rail oil injector with the static leakage structure comprises an oil injector body, a control valve seat, a control valve matching part, a needle valve assembly and a needle valve body, and is characterized in that a middle hole pressure storage cavity is formed in the oil injector body and used for containing the control valve matching part and the needle valve assembly; the control valve matching part serves as the only static leakage matching part and is composed of a control valve sleeve and a control valve rod in clearance fit with the control valve sleeve, a static oil return channel comprising a first inclined oil return hole, a first vertical oil return hole and an annular groove is constructed in the control valve sleeve, a second oil return through hole in the high-pressure sealing face of the control valve seat is matched, and a specific fuel leakage backflow path is formed. Compared with a traditional 2000 bar common rail oil injector, static leakage matching parts are reduced, the fuel oil leakage amount is greatly reduced, oil consumption is effectively reduced, carbon emission is reduced, meanwhile, the reliability of the oil injector is improved, and the service life of the oil injector is prolonged. The middle hole pressure storage cavity can reduce oil injection pressure fluctuation, and the average effective injection pressure and the multi-time oil injection precision are improved. The oil injector body and the needle valve body are simplified in structure, and machining difficulty and manufacturing cost are reduced.

The invention discloses a deep underground space in-situ storage test platform fused with a multi-source measurement and control technology, and relates to the technical field of deep ground science and engineering, the deep underground space in-situ storage test platform comprises a mine wall body, and the underground space of the mine wall body is excavated to form a cavern; a sensing optical fiber is arranged on the surrounding rock wall surface of the cavern and is used for monitoring the pressure and temperature change of the surrounding rock in the storage process; a monitoring hole is formed in the outer side of the periphery of the cavern, a high-density electrical method monitoring assembly is arranged in the monitoring hole, a sealing plate is arranged on an opening of the cavern, a regulation and control module is arranged on one side of the sealing plate, a monitoring module is arranged on one side of the regulation and control module, an oil guide port and a water guide port are formed in the sealing plate, and a liquid level meter is fixedly connected to one side of the sealing plate. The high-density electrical method monitoring assembly is combined with the monitoring module and the regulation and control module, real-time monitoring and regulation and control are conducted on surrounding rock and the environment in the deep underground space storage process, the long-term action mechanism of surrounding rock underground space storage is obtained, and the safety and stability of the storage environment are ensured.

The invention relates to the technical field of tunnel engineering waterproof construction, and discloses a tunnel lining waterstop construction method which comprises the following steps: cleaning and welding a waterstop joint; the water-stop belt is positioned along a lining formwork preset line, tension is applied through cooperation of a steel bar fixing point and a tension clamp, and the gap between the water-stop belt and the formwork is controlled to be smaller than or equal to 0.5 mm; an anchoring part is installed at the bottom of the waterstop, a vertical flange of the anchoring part is used for pressing the lower edge of the waterstop, and a horizontal flange is embedded into concrete; silica gel-based flexible isolating membranes are laid on the two sides of the water stop belt, and the top of the water stop belt is connected with an inflatable expansion strip; nanometer epoxy resin is injected into the micro-channel, the injection pressure and the air pressure of the inflatable expansion strip are dynamically adjusted, and curing is conducted till the filling rate of the nanometer epoxy resin reaches 95% and the air pressure is stable; and finally, concrete is poured, the jacking pressure of the formwork on the water stop belt is adjusted in a partitioned mode through the hydraulic jacking module, and the pressure is relieved after the concrete is initially set. The waterproof sealing structure is mainly used for improving the waterproof sealing performance and the structural stability of the tunnel lining joint.

The invention relates to a physical simulation experiment and observation device for CO2 injection and storage. Comprising a model cabin body, a driving system, a CO2 injection module, a regulation and control module and a monitoring system, a modular rock stratum assembly is detachably installed in the model cabin body, and the driving system is connected with the model cabin body and used for driving the modular rock stratum assembly in the model cabin body to achieve three-dimensional translation and inclination angle and tendency adjustment; the CO2 injection module is used for providing CO2 and tracer gas, and the monitoring system is installed in the model cabin and used for collecting strain, pressure, concentration and vibration data of the modular rock stratum assembly in real time; according to the technical scheme, through hydraulic multi-degree-of-freedom driving, in the process, through real-time rechecking of the laser tracker, reconstruction of complex structures such as anticline / fault and the like can be efficiently completed, and inclination angle control is precise; cO2 injection pressure is dynamically adjusted according to a stratigraphic dip angle, an injection module is interconnected with hydraulic driving data, and temperature, pressure and flow are optimized in real time.

The invention provides a heat treatment-free aluminum alloy casting production process, and belongs to the technical field of alloys, and the heat treatment-free aluminum alloy casting production process comprises the following steps: S1, alloy preparation; s2, smelting and refining are conducted, after pure aluminum ingots are molten, heating and mixing are conducted, powder spraying refining and degassing treatment are conducted, and the dosage of a refining agent accounts for 0.1%-0.3% of the mass of molten liquid; s3, die-casting forming is conducted, specifically, a high-vacuum die-casting process is adopted, the injection pressure is 80-150 MPa, the melt pouring temperature is 680-720 DEG C, and the die preheating temperature is 150-250 DEG C; s4, natural aging treatment; the specific parameters of the adding amount of a refining agent, the injection pressure and the pouring temperature are optimized through a three-factor three-level orthogonal test, the optimal machining process parameters are determined to be 0.20% of the refining agent, 120 MPa of the injection pressure and 700 DEG C of the pouring temperature by detecting the tensile strength, the ductility and the hardness of the alloy, at the moment, the tensile strength of the alloy is improved to 389 MPa, the ductility is improved to 8.5%, and the hardness is improved to HV65.8; and compared with the alloy before optimization, the alloy is increased by 9.0%, 26.8% and 2.3% respectively.

The invention discloses a carbon sequestration leakage state evaluation method and device, and relates to the field of carbon sequestration, and the method comprises the steps: obtaining the injection data corresponding to carbon dioxide, and the injection data comprises at least one of the following: the injection speed, the injection pressure, the injection position, and the injection quality; on the basis of a target prediction model, according to the injection data, the sealing damage state of a shaft, the sealing damage state of a cover layer and the sealing damage state of a fault are predicted, and the shaft, the cover layer and the fault are used for sealing the carbon dioxide; and predicting the leakage state of the carbon dioxide according to the sealing damage state of the shaft, the sealing damage state of the cover layer and the sealing damage state of the fault. By adopting the technical scheme, the problem that the prediction efficiency and accuracy of the leakage state of the carbon dioxide are relatively low is solved.

The invention provides a temperature control method and system in plastic product processing, and relates to the technical field of plastic processing.The method comprises the steps that an injection molding machine is connected, operation parameters such as injection pressure and speed are obtained, raw material information is combined, a temperature control procedure is set, and an initial temperature control strategy is set; multi-region temperature compensation and energy consumption optimization are realized through edge computing nodes and environment information; and based on the initial strategy, optimizing the temperature gradient, and combining the compensation result to obtain an optimal temperature control strategy. The problems that in the prior art, due to the fact that fine adjustment cannot be conducted according to different raw material characteristics and mold structures, and the environmental adaptability is poor, the processing quality of plastic products is unstable, and the production efficiency is low can be solved. The forming quality of products is improved, the rejection rate is reduced, and the maximization of energy efficiency is achieved.

The invention discloses an automobile suspension motor shielding sleeve manufacturing method and used injection molding raw materials and an injection mold, after the injection mold is preheated to 200-210 DEG C, glass fibers and PEEK resin raw materials are injected into the mold through an injection molding machine, the front section of a charging barrel of the injection molding machine ranges from 395 DEG C to 400 DEG C, the middle section of the charging barrel of the injection molding machine ranges from 390 DEG C to 395 DEG C, and the rear section of the charging barrel of the injection molding machine ranges from 385 DEG C to 390 DEG C; in the injection stage of the injection molding machine, the injection molding pressure is controlled to be 100-110 MPa, the injection speed is 190-200 mm / s, the dwell pressure is controlled to be 120-130 MPa, the dwell time is 3-5 s, after the dwell is finished, the injection mold is subjected to cooling molding, and a primary product of the automotive suspension motor shielding sleeve is obtained; and then machining the inner hole of the primary product of the shielding sleeve of the automobile suspension motor to a required range. The shielding sleeve of the automobile suspension motor is excellent in shielding performance, high in mechanical strength, long in service life, stable in quality and high in size precision.

The invention discloses a multi-material composite injection molding method and system, and the method comprises the steps: carrying out laser surface etching on a continuous fiber reinforced substrate to form a microgroove array, and spraying an activator to generate an activated fiber preform; performing infrared partition heating on the marginal area, constructing a temperature gradient field, positioning the marginal area to a mold cavity, injecting engineering plastic melt into a mold, synchronously collecting mold vibration frequency spectrum and infrared thermal imaging data, establishing a mapping relation between vibration dominant frequency characteristics and temperature gradient values, and dynamically regulating and controlling injection molding pressure and pressure maintaining switching time. A foaming elastomer material is injected into a reserved groove position of the matrix-fiber composite blank, a self-foaming reaction is triggered through blank waste heat, and a composite structural part is generated; based on vibration frequency spectrum and infrared thermal imaging data continuously collected in the injection molding process, the process health index is calculated, the product qualification is judged, control over a multi-material interface is achieved by fusing infrared thermal imaging, and efficient and low-consumption production is achieved while the composite strength and the sealing performance are improved.

The invention discloses an ion type rare earth ore jet flow multi-branch drilling flow guide infiltration method suitable for a loose ore bed, and relates to the technical field of rare earth mining, a liquid injection mother hole is vertically and downwards drilled in a surface soil layer of a mining area, and a water jet flow drilling mechanism is used for drilling multi-branch drilling holes in the rare earth ore bed with the liquid injection mother hole as the center; and after the drilling work is completed, subsequent liquid injection engineering arrangement is perfected, and then the ore leaching liquid in the high-level liquid pool is conveyed into the liquid injection mother holes through the height difference pressure, so that the ore leaching liquid can be diffused to the periphery in a large range under the flow guide effect of the multi-branch drill holes. The ion type rare earth ore body hole-crack structure is improved through the interference effect between jet flow impact drilling and branch holes, the ore body permeability is enhanced, efficient mining of ion type rare earth is achieved, meanwhile, the surface soil layer construction amount can be greatly reduced, the liquid injection pressure is reduced, the landslide risk and soil body pollution caused by liquid injection are effectively avoided, and the service life of the ion type rare earth ore body is prolonged. The method is helpful for innovating the field process technology and improving the economic and social benefits of enterprises.

The invention provides a micro-aperture endoscopic detection and directional cleaning method which comprises the following steps: acquiring an inner wall image and medium information of a target pipeline, and performing feature analysis on the inner wall image to obtain a dirt type; determining the spraying state of a nozzle according to the dirt type; wherein the injection state comprises injection pressure and injection direction; cleaning liquid information is determined according to the spraying state and the medium information; wherein the cleaning fluid information comprises cleaning fluid types and a cleaning fluid proportion, and the cleaning fluid types comprise external cleaning fluid and / or pipeline medium fluid; and generating a directional cleaning scheme for the target pipeline according to the spraying state and the cleaning liquid information. The position and the type of the dirt are determined by obtaining the internal image, the dirt is removed in a targeted mode, the equipment applicability is improved, the working efficiency is improved, and meanwhile damage to the pipeline is reduced.

The invention discloses a power station air cooling island dry ice auxiliary cooling cleaning system and method, and belongs to the technical field of power station air cooling island cooling. The device is composed of a bimodal gas-solid two-phase flow nozzle, a flow field optimization nozzle support, a working medium supply unit and an intelligent control system. A dual-mode gas-solid two-phase flow nozzle is integrated on the flow field optimization nozzle support, an adjustable rotational flow generator is arranged in the nozzle, dry ice particles can be injected into the inner space of the air cooling unit, the environment temperature is reduced by means of the characteristic that dry ice sublimates to absorb heat, or the dry ice is directly injected to the outer surface of a heat dissipation pipe bundle to achieve efficient cleaning. The intelligent control system automatically switches a cooling mode and a cleaning mode and dynamically adjusts the rotational flow strength, the injection pressure and the dry ice particle size of the nozzle. The heat dissipating capacity of the air cooling island can be enhanced, and the heat dissipating tube bundle can be cleaned in a lossless mode.

The application provides a light EVA composite chemical foaming sole material with a bimodal cell structure and a preparation method thereof, and the method comprises the following steps: S1, 50-70 parts of ethylene-vinyl acetate, 10-25 parts of polyolefin thermoplastic elastomer, 20-40 parts of low-molecular-weight thermoplastic elastomer, wear-resistant agent and active agent are mixed, melt homogenization granulation is carried out, and a first material is obtained; the low-molecular-weight thermoplastic elastomer is selected from one or more of polyurethane elastomer, polyester elastomer and polyamide elastomer; S2, the first material, a chemical foaming agent and a crosslinking agent are mixed and then granulated to obtain a second material; S3, the second material is subjected to injection pressure holding and temperature reduction foaming; and S4, the small foaming semi-finished product obtained is subjected to secondary mold pressing to obtain the light EVA composite chemical foaming sole material. The foaming sole prepared by the application has the characteristics of low specific gravity, high resilience and small shrinkage, the physical properties are controllable, and the market prospect is good.

The application discloses a kind of cemented filling goaf in power plant flue gas disposal quantity calculation method, the method includes: obtaining filling goaf volume and buried depth etc. Geological data, the physicochemical characteristics such as mineral composition, porosity, permeability of cemented filling body are determined by experiment;Accordingly, the theoretical flue gas fixation capacity of cemented filling body is calculated;Through cemented filling body mineralization sealing flue gas test, the flue gas diffusion range under different injection pressure is obtained, and then the mineralization sealing flue gas efficiency is obtained;According to the test data, the numerical model of cemented filling goaf sealing flue gas is established, the flue gas migration and chemical reaction rate are verified and analyzed, and the mineralization sealing flue gas efficiency is corrected according to the simulation result;Potential formula of filling material sealing power plant flue gas is established, and the flue gas disposal quantity is calculated;According to the measured data of filling disposal power plant flue gas, the potential formula of filling sealing power plant flue gas is verified.The calculation principle is simple, which provides a flue gas injection quantity theoretical calculation method for filling mining disposal process of power plant flue gas.

The application discloses an automatic air supplement method and device for an in-situ leaching uranium gas station and belongs to the technical field of in-situ leaching uranium. The automatic air supplement method comprises the following steps: according to the pressure of a gaseous gas sample storage tank and the injection pressure, automatically controlling the air supplement process of the gaseous gas sample storage tank, so that the pressure of the gaseous gas sample storage tank is greater than the injection pressure; and according to the injection pressure and the liquid injection pressure, automatically controlling the injection process, so that the injection pressure is greater than the liquid injection pressure. Through real-time detection of the pressure of each part of the in-situ leaching uranium gas station, the embodiment of the application realizes automatic and accurate regulation and control of the carbon dioxide system of the in-situ leaching uranium gas station, improves the efficiency and saves manpower.

The invention belongs to the technical field of injection molding machines, and particularly relates to an injection mechanism of an injection molding machine and a use method of the injection mechanism. The multi-nozzle adjusting injection assembly comprises a special-shaped seat; a group of flow dividing cavities are formed in the special-shaped seat; mounting openings are formed between the surface of the special-shaped base and the flow dividing cavity. Adjusting discs are arranged in the flow dividing cavities correspondingly. The surface of each adjusting disc is fixedly connected with a spray head; and a group of guide holes are uniformly distributed in the adjusting disc. The position of each nozzle is finely adjusted, so that the nozzle can be conveniently connected with a mold sprue to the greatest extent, one set of injection mechanism can be matched with multiple sets of similar molds for use, the connection efficiency and the matching degree between an injection molding machine and the molds are improved, the flexibility of injection molding production work is enhanced, the injection pressure of the multiple nozzles is balanced, and the production efficiency is improved. The uniformity degree of injecting the plasticized material into the mold in a multi-point mode can be improved, and the filling effect of the material on a mold cavity is improved.

The utility model discloses a high-precision injection molding device for an LED (light-emitting diode) light guide plate, which is characterized in that an injection molding device and a mold closing device are arranged on a rack, and an electric control cabinet and an operation panel are fixedly arranged on the front side of the rack; the injection molding device comprises a heating cylinder, a hopper is connected above the heating cylinder, the front end of the heating cylinder is connected with a nozzle, and a pressurizing injection molding mechanism is arranged on the heating cylinder; the mold closing device comprises a fixed mold and a fixed plate which are fixedly arranged on the rack, a guide optical shaft is fixedly connected between the fixed mold and the fixed plate, a movable mold is slidably mounted on the guide optical shaft, the movable mold is connected with a driving mechanism, and the driving mechanism enables the movable mold to be closed with the fixed mold at a certain pressure; the rotating speed of the hydraulic motor is adjusted by controlling the pressure and flow of the hydraulic system, the injection pressure and speed are adjusted according to different products and materials, and the injection molding precision is guaranteed; the guide optical axis and the driving mechanism of the movable mold ensure that the mold closing system has enough rigidity, the mold closing pressure and the pressure maintaining pressure can be adjusted by controlling the hydraulic pressure, and the injection molding precision is further ensured.

The present invention relates to the field of in-mold transfer and mold technology, and in particular to a slider block mechanism for an in-mold transfer mold. The slider block mechanism includes: an inclined guide post pressure block, which is fixed on the inclined guide post with one end fixed on the mother template; a slider, which is arranged in the male template, including a slider body and a slider insert, wherein the slider body is provided for the other end of the inclined guide post pressure block to slide and insert, and the slider insert is locked on one end of the slider body; the slider block mechanism includes a first slider block, a second slider block and a hydraulic cylinder, one end of the first slider block is fixed on the mother template, and abuts against both ends of the slider when the mold is closed; one end of the second slider block is fixed to the lifting end of the hydraulic cylinder through a T-slot, and the other end can abut against the middle of the slider after the mold is closed. The beneficial effect of the present invention is that it can better tighten the two ends and the middle of the slider during mold closing and injection molding without interfering with the film, thereby enhancing the stability of the slider under injection pressure, thereby reducing the step difference and burrs of the product and improving the yield rate.

The application relates to the technical field of building materials, and discloses a steam-pressure aerated concrete heat-insulation wall processing technology, which comprises the following steps: S1, heat-insulation core material pretreatment: cutting vertical-silk rock wool into a designed size, injecting liquid modified polyurethane into the rock wool through a vacuum-pressing device, the injection pressure being 0.5 MPa-1.5 MPa, and keeping for 30 min-60 min; the modified polyurethane is composed of polyurethane prepolymer, a water-repellent agent and a guide agent, and the weight ratio is 100:3-8:0.5-2; S2, concrete pouring: fixing the pretreated heat-insulation core material in a mold, pouring foamed concrete slurry, the water-cement ratio being 0.45-0.55, and the curing temperature being 50 DEG C-70 DEG C. The unique modified polyurethane is gasified to form a microporous structure, stress concentration is effectively relieved, the low-temperature crack resistance index is greatly improved, and the durability and stability of the wall in a low-temperature environment are greatly enhanced.

The utility model provides a hot runner structure capable of reducing injection molding pressure and an injection mold, and belongs to the field of mold structures. The hot runner structure capable of reducing the injection molding pressure comprises a main runner and a plurality of sub-runners connected with the tail end of the main runner, and further comprises more than one flat discharging structure, the sub-runners are provided with a plurality of groups with the same number as the discharging structures, one side of each discharging structure is provided with a feeding port, and the other side of each discharging structure is provided with a discharging port. One side of each discharging structure is communicated with all the discharging ports of the sub-runners in the corresponding group, the other side of each discharging structure is provided with a discharging port connected with a product cavity, and the width of the discharging port of each discharging structure is in a long strip shape or a long strip arc shape far larger than the height of the discharging port. By widening the runner of the discharge port, the injection molding pressure reaching a product cavity is effectively reduced, so that the appearance quality of a product is improved.

The application discloses an anti-seepage and anti-explosion automatic control pressure high-pressure injector device and belongs to the field of image contrast diagnosis and treatment equipment. The device comprises a driving pushing unit and an injection cylinder. A hose is connected to the discharge end of the injection cylinder through a joint. A first pressure sensor, a second pressure sensor and a buffer are sequentially installed on the hose. The first pressure sensor is close to the discharge end of the injection cylinder. The buffer is arranged downstream of the second pressure sensor. A movable block in the buffer can divide a liquid channel of the connected hose and a volume-adjustable exchange chamber. The driving pushing unit is transmissionally connected to an injection plug in the injection cylinder and is electrically connected to a control box receiving signals of the two sensors. The application can compare and distinguish two types of faults, i.e. blockage and overload in the cylinder and blockage of the distal pipeline, by means of the double sensors, so that the control system can be stopped in advance for protection, the defects of lagging and poor fault tolerance of single pressure detection and identification can be made up, medical risks such as extravasation of contrast medium, pipeline burst and blood vessel injury can be reduced, the injection pressure is stable and controllable, and medical staff need not to be on duty for a long time.

The invention discloses a water injection wellhead injection pressure monitoring and evaluating method, which comprises the following steps of: realizing cross-well pressure data coupling by utilizing geographical distribution labels based on multi-point pressure real-time acquisition of a target and an adjacent water injection well, extracting pressure fluctuation characteristics after data missing correction, multi-stage noise reduction and normalization, and calculating the injection pressure of a water injection wellhead. Inputting an automatic induction dominant pressure mode of the self-evolution multi-label clustering model, and generating a reference template dynamically updated along with working conditions; the pressure fluctuation consistency is judged by comparing the real-time pressure trend with a reference template distribution label, collaborative anomaly traceability analysis is implemented for significant deviation, the anomaly cause type is recognized by combining historical drift and noise characteristics, a detection threshold value is automatically optimized, a machine-readable anomaly traceability report is generated, and an operation and maintenance decision is assisted; an online sample continuous learning mechanism ensures the adaptability and diagnosis accuracy of the model under different working conditions. According to the method, the intelligence, robustness and abnormal response efficiency of water injection well area pressure monitoring are improved.

The invention discloses a method for improving the thickness uniformity of a composite material based on a VARI technology, and relates to the technical field of composite material liquid forming. Comprising the following steps that a prefabricated part is laid on the surface of a tool, the surface of the prefabricated part is sequentially covered with demolding cloth and a flow guide net, and a composite body is formed; an inner-layer sealing bag is adopted to wrap the composite body and is connected with the glue injection pipe and the glue outlet pipe, and an inner bag packaging body is formed; after a breathable layer is laid on the periphery of the inner bag packaging body, the outer layer sealing bag is adopted for wrapping, a double-layer bag packaging body is formed, and the outer layer sealing bag is provided with an air outlet; the double-layer bag packaging body is vacuumized until the prefabricated part is compacted and the thickness is stable, and a compacted prefabricated part is obtained; measuring the net glue injection pressure range of the compacted prefabricated part without springback in thickness; and on the basis of the net glue injection pressure range, the net glue injection pressure is adjusted, glue is injected into the compacted prefabricated part till no bubble is discharged from the resin flowing out of the glue outlet pipe, and then the composite material product is obtained after curing. The defects of air holes and poor glue in the composite material can be avoided, the thickness rebound of the local area of the prefabricated part in the glue injection process is avoided, and the thickness uniformity of the composite material is good.

The application discloses a screening device for heavy calcium carbonate particles, and relates to the technical field of screening, which comprises a frame body, an outer cover installed on the frame body, a support frame fixedly installed in the outer cover, a double-screen assembly rotatably installed on the support frame, and a primary screen assembly rotatably installed in the double-screen assembly, and a tumbling assembly matched with the primary screen assembly is installed on the support frame. Advantages are as follows: the heavy calcium carbonate particle screening device realizes two-stage screening through reverse rotation of double rollers, utilizes the staggered effect to diffuse materials and improves the efficiency; a driving motor is provided to drive a filter plate to scatter the accumulated materials of the inner roller, so that the diffusion of the materials is accelerated; a gas injection rotating pipe with fins is used to further diffuse the materials through pulse blowing, and dust is sucked and discharged at the same time; the rotating pipe is controlled to rotate at variable speed through gas injection pressure, and an elastic expansion rod cooperates with a counterweight ball to knock and vibrate, so that the rotating pipe is prevented from being blocked.

Disclosed are a radio frequency connector and a packaging method thereof, the packaging method comprising the following steps: placing a plastic shell of an at least partially metal shell accommodating a ring outside an at least partially metal terminal into a cavity of a mold; wherein a filling space is formed between one end of the plastic shell and the metal shell; injecting hot melt adhesive into the cavity under predetermined conditions; wherein the predetermined conditions include that the injection time is 1-20.4 seconds and / or the injection pressure is lower than 7 MPa, further, the injection time is 1.8-20 seconds, and the injection pressure is 0.3-6.8 MPa; further, the injection time is 2.13-15.24 seconds, and the injection pressure is 0.35-5.23 MPa; curing the hot melt adhesive to form a sealing fixing member of an integrally formed structure at least partially filled in the filling space, and constructing a non-detachable structure of the metal shell and the plastic shell. The radio frequency connector and the packaging method thereof provided in the specification can simplify the sealing structure.

The thermosetting resin composition contains an epoxy resin containing an epoxy compound represented by formula (1), a curing agent, and an inorganic filler. The glass transition temperature of a thermosetting resin composition in which m is 2 and n is 2 in formula (1), measured at a heating rate of 5°C / min using thermomechanical analysis (TMA), is 190°C or more, and the die shear strength of the thermosetting resin composition to copper at 230°C, measured by the following <Procedure>, is 3.0 MPa or more. <Procedure> The thermosetting resin composition is molded using a low-pressure transfer molding machine at a mold temperature of 175° C, an injection pressure of 10 MPa, and a curing time of 120 seconds, and four 10 mm2 test pieces per level are molded on a copper lead frame. Subsequently, the die shear strength between the test piece and the copper lead frame is measured at 230°C using an automatic die shear measuring device. The die shear strength of the four test pieces is adopted.

The application discloses an injection molding method for a toy light guide pipe, which can avoid the occurrence of flow lines and bubbles in the toy light guide pipe after injection molding. The technical scheme is as follows: an injection molding method for a toy light guide pipe, which comprises a mold provided with a cavity, and the cavity is provided with a gate through which glue is injected into the cavity, and the glue injection is divided into five stages, i.e., a first glue injection stage, a second glue injection stage, a third glue injection stage, a fourth glue injection stage and a fifth glue injection stage. The glue injection speed of the first glue injection stage is the largest, the glue injection speed of the third glue injection stage is larger than that of the second glue injection stage and the fourth glue injection stage, and the glue injection speed of the fifth glue injection stage is the smallest. The glue injection pressure of the first glue injection stage is smaller than that of the second glue injection stage, and the glue injection pressure of the second glue injection stage is smaller than that of the third glue injection stage. The application belongs to the technical field of injection molding.

This invention relates to a method and device for detecting material leakage from injection molding machine nozzles, belonging to the field of detection technology. It includes: responding to a fully automatic machine signal; continuously acquiring the current thermocouple temperature and injection pressure values ​​of the nozzle; setting an abnormal temperature; comparing the thermocouple temperature with the abnormal temperature to determine if the nozzle is currently in an abnormal temperature state; determining if the nozzle is currently in an abnormal pressure state based on the injection pressure value; and determining if the nozzle is simultaneously in an abnormal temperature and abnormal pressure state, triggering an alarm and / or stopping the machine. This invention achieves the effect of effectively detecting material leakage from injection molding machine nozzles using only two key parameters—thermocouple temperature and injection pressure—without requiring a large number of additional, highly sophisticated sensors, thus significantly reducing detection costs.

A concentric and independent three-channel precise injection method for oil field polymers comprises the steps that (a) a concentric three-channel tubular column is formed by sequentially sleeving a central tube, a middle-layer tube and an outer tube from inside to outside to form three independent fluid channels; the quality-divided supercharger is arranged at a wellhead and comprises three independent channels, each channel is internally provided with a fan blade with adjustable rotating speed, and the fan blades are used for adjusting the molecular weight and the injection pressure of the polymer solution according to the permeability of a target stratum; the control system is connected with the pressure sensor, the flow meter and the quality-divided supercharger and used for adjusting the rotating speed of the fan blades and injection parameters of all the channels in real time according to preset parameters, the structure is novel, the testing process is simplified, the allocation efficiency is improved, the testing process is effectively simplified, the situation that testing is complex in the traditional technology is changed, and the testing efficiency is improved. And meanwhile, the layered water volume allocation efficiency is improved, and time and labor cost are saved.