34results about How to "Improve high stability" patented technology

A method of file sharing based on a file server is intended to share specific data and enable data constraints for automatic deletion of specific shared data which has been downloaded by a downloader device.

The invention relates to a production process of an environment-friendly microwave ceramic copper-clad plate. The environment-friendly microwave ceramic copper-clad plate is mainly applied to the fields meeting high-end requirements, such as microwave and millimeter-wave satellite communications. The process comprises the following steps of: carrying out modification treatment on the surface of glass fiber cloth and immersing in synthetic slurry to form a prepreg; rolling or cutting and laminating, and anchoring a copper foil; then carrying out cold machine pre-pressing to evacuate air; and under the vacuum condition of 10-20 Kpa, keeping the pressure of a hot pressing machine at the temperature of 350-400 DEG C and at the pressure of 15-20 Mpa to be cured for 1-2 hours to prepare the product. The environment-friendly microwave ceramic copper-clad plate has microwave high-frequency low dielectric epsilonr, low loss tan delta, efficient signal transmission and high stability.

The invention belongs to the technical field of optical precision measurement, and relates to a method for measuring super long focal length of a confocal combination lens and a device thereof. The method is as follows: firstly determining the focal position of a reference lens and the focal position of the combination of the measured lens and the reference lens according to the confocal focusingprinciple, measuring the distance delta between the two focal points and the distance d0 between the two lenses, and substituting the delta and the d0 into a formula to calculate the focal length value of the measured lens, a pupil filtering technique can also be used in the measurement to enhance the sensitivity of focal length measurement. The invention proposes that accurate focusing is realized by the characteristics that an object corresponds to the microscope objective focus when the confocal point responds to the maximum curve value, and extends the confocal microscopy principle to thesuper long focal length measurement field, and proposes the confocal focusing principle. The method combines the confocal focusing principle with the combination lens method, has the advantages of high measurement precision and strong anti-environment interference ability, and can be used for high-precision focal length measurement during the detection and assembly of the super-long focal length lens.

The invention provides a continuous positioning detection device for preforms, which includes a bracket, a photographing detection device, a preform conveying device, an interval transfer device and a detection conveying device. side; the detection and conveying device includes a rotating assembly and several preform spin limit assemblies; by setting an interval transfer device, the preforms conveyed from the preform conveying device are arranged at intervals in the further transmission process, and Cooperate with the detection and conveying device to rotate and clamp the sorted preforms during the rotary motion, and then take pictures and detect at the photo-detection device. The detection method realizes the detection of the thread integrity of the bottle preform and the bottle cap and simultaneously performs the photo detection of the defects of the bottle body of the preform, which solves the technical problems of low efficiency and high cost in the preform detection process in the prior art.

The invention provides a continuous type positioning detecting method for bottle preform. The continuous type positioning detecting method comprises steps of bottle preform charging, bottle preform conveying, bottle preform limiting, photographing and detecting, bottle preform removing, waste outputting and bottle preform outputting. Bottle preform is transmitted into detecting equipment in a linear mode, and photographing and detecting are synchronously realized in a linear transmission process; meanwhile, a bottle preform self-rotating limiting assembly in a detecting process is matched to realize detecting thread integration of a bottle mouth of the bottle preform, and photographing detecting for bottle body flaws of the bottle preform is performed while thread integrity detection on threads of a bottle lid of the bottle preform is realized, so that detecting efficiency is greatly improved, detecting variety is improved, and the technical problems that efficiency is low, cost is great and linear transmission detection cannot be realized in a bottle preform detecting process in the prior art are solved.

The invention relates to a high-perpendicularity electric pole and a construction technology thereof, and relates to the technical field of electric pole construction, the high-perpendicularity electric pole comprises a vertically-arranged pre-buried base and a linear rod, and the linear rod is located at the top of the pre-buried base and is coaxially arranged with the pre-buried base. The electric pole further comprises a first clamping seat, a second clamping seat and a plurality of positioning pieces, the first clamping seat is installed at the top of the embedded base and is coaxial with the embedded base, the second clamping seat is installed at the bottom of the linear rod and is coaxial with the linear rod, and the first clamping seat and the second clamping seat are stacked and fixedly connected. The positioning piece is installed on the second clamping base, a plurality of positioning grooves are formed in the side, facing the second clamping base, of the first clamping base, the positioning piece comprises a positioning rod, one end of the positioning rod is connected with the second clamping base, and the other end of the positioning rod is correspondingly inserted into the positioning grooves. The electric pole has the effects that the perpendicularity of the linear rod is improved during mounting and positioning, the situation that the linear rod inclines is better reduced, and potential safety hazards of the electric pole are reduced conveniently.

The present invention provides an on-line detection device for preform defects, comprising a bracket, a photographing detection device, a preform conveying device, an interval separation device and an auxiliary detection device. The photo detection space, the photo detection device is located in the photo detection space; the detection auxiliary device includes a rotary drive assembly, a preform limit assembly and a limit drive assembly; The transferred preforms are arranged at intervals in the further transmission process, and the preforms that have been sorted are clamped in a rotary motion with the aid of the detection device and then transferred to the photo-detection space for photo-detection. At the same time, during the clamping process The photographing aids are inserted into the preform to realize the reflective shielding during the detection of the preform, which solves the technical problem that the photographic detection device passes through the transparent preform and the detection effect is poor.

This application relates to a high verticality electric pole and its construction technology, which relates to the field of electric pole construction technology, wherein a high verticality electric pole includes a vertically arranged pre-buried base and a straight pole, and the straight pole is located The top of the base is set coaxially with the pre-embedded base; it also includes a first deck, a second deck and several positioning pieces, the first deck is installed on the top of the pre-embedded base and coaxially set with the pre-embedded base, the second deck Installed on the bottom of the linear rod and set coaxially with the linear rod, the first deck and the second deck are stacked and fixedly connected; the positioning part is installed on the second deck, and the first deck faces the side of the second deck A plurality of positioning grooves are provided, and the positioning member includes a positioning rod, one end of which is connected to the second card holder, and the other end is correspondingly inserted into the positioning groove. The application has the effect of improving the verticality of the straight pole during installation and positioning, better reducing the inclination of the straight pole, and conveniently reducing the potential safety hazard of the electric pole.

The invention discloses a recovery system and a recovery method for a selenium drum. The recovery system comprises a selenium drum crusher, a negative-pressure ink powder collecting device, a magnetic separator, a high-pressure cleaner, an eddy separator and a vibrating separator, wherein an input end of the selenium drum crusher is connected with a conveying device, and an output end of the selenium drum is communicated with the magnetic separator; the negative-pressure ink powder collecting device is arranged on the selenium drum crusher, so that the whole recovery system can work in a negative-pressure state; an output end of the magnetic separator is communicated with the high-pressure cleaner; an output end of the high-pressure cleaner is communicated with the eddy separator; a discharge end of the eddy separator is communicated with the vibrating separator. When the selenium drum is recovered, the selenium drum is crushed at first, the whole shell of the selenium drum is crushed in a length direction of the selenium drum for ensuring that a metal bar in the selenium drum falls off integrally, the fallen metal bar is integrally recovered, and other component materials of the selenium drum are recovered. According to the scheme, the metal bar in the selenium drum can be completely recovered and the reliability and the feasibility of the whole recovery system for the selenium drum are greatly improved.

The application relates to an α-phase nano-alumina-reinforced polyether ether ketone biocomposite material and a preparation method thereof. Using polyether ether ketone resin as the matrix, α-phase nano-alumina as the mechanical strength enhancement phase, silane coupling agent KH560 as the interface compatibilizer, polytetrafluoroethylene as the lubricant, and hydroxyapatite as the biological activity enhancement phase, the use of Various methods such as magnetic mechanical stirring, ultrasonic blending, graded ball blending, injection molding, etc., have significantly improved the dispersion of reinforced equal particles in the matrix, and finally obtained high temperature resistance, high strength, high stability and excellent performance. Biocompatible polyether ether ketone biocomposites.

The invention provides a porous carbon-nitrogen two-dimensional nanosheet and a method for preparing an IPMC electrochemical driver by using the porous carbon-nitrogen two-dimensional nanosheet. The porous carbon-nitrogen two-dimensional nanosheet is prepared by the following method: the carbon-nitrogen precursor and glucose are uniformly ground to obtain a mixture, and the mixture is heated to 450°C to 600°C to obtain graphite phase carbon nitrogen and two-dimensional nanocarbon sheet The composite; under the protection of gas, the composite is heated to 700°C-1000°C to obtain a porous carbon-nitrogen two-dimensional nanosheet. The IPMC electrochemical actuator prepared by using the porous carbon-nitrogen two-dimensional nanosheets exhibits excellent electrochemical energy storage and electromechanical response performance, such as large specific capacitance, fast response rate, large deformation and high stability. Therefore, it has great potential applications in the field of smart materials such as insect wings, Braille displays, and bionic medical catheters. In addition, the method has a simple process, does not require complex equipment, and is easy to industrialize production.

The invention relates to an environment friendly microwave medium ceramic substrate which is mainly used for the circuits of microwave and millimeter wave satellite communication products, military radar products, electronic navigation products, microwave safety monitoring products, and the like. The substrate is prepared by adopting the following steps of: directly mixing ceramic microcrystal powder with polytetrafluoroethylene (PTFE) powder, PTFE emulsion, glass fiber powder, liquid-state epoxy resin and PVA (Polyvinylalcohol) solution raw material and micro flame-retardant additive raw materials: brominated resin, antimony pentoxide (Sb2O5) and bismuth trioxide (Bi2O3); carrying out blooming, primary drying, laminating, finish rolling, two-surface or two-way continuous sizing, redrying, two-surface or two-way continuous copper foil coating, tailoring and high-pressure lamination; then vacuumizing and curing for 50-60min at low temperature of 170-200 DEG C. The invention does not contain Nb heavy metal components and has good properties of microwave high frequency band low dielectric Epsilonr, low loss tan delta, high signal transmission efficiency and high stability and the advantages of simple process and low sintering temperature and can be cofired with a silver electrode.

The invention discloses a tractor distributor with a high-stability one-way valve. The tractor distributor comprises a valve body, a front cover and a back cover. The valve body is internally provided with a valve rod, and the two ends of the valve rod extend into the front cover and the back cover respectively. The front cover is provided with a handle. The valve body is provided with a one-way valve cavity, and a one-way valve reset spring, a one-way valve element and a one-way valve steel ball are arranged in the one-way valve cavity. The one-way valve element comprises a front guide body, a middle connecting body and a tail end. A two-stage guide body is arranged on the peripheral face of the middle connecting body, and an unload groove penetrating through the two-stage guide body in the axial direction of the one-way valve element is formed in the two-stage guide body. The end face, matched with the valve body, of the back cover is provided with a sealing groove, and a special-shaped sealing ring is arranged in the sealing groove. The tractor distributor has the advantages that the problems that the periphery of a front guide body of a valve element of an existing one-way valve is abraded, a sealing piece is pressed and damaged easily and sealing becomes invalid can be solved, the sealing effect of the back cover is good, and the tractor distributor cannot be contaminated by dust easily.